Summary of Research Project Results Under the JSPS FY2000
"Research for the future Program"



1.Research Institution Osaka Prefecture University
 
2.Research Area Physical and Engineering Science
 
3.Research Field Exploratory research on novel artificial materials and substances for next-generation industries
 
4.Term of Project FY1996〜FY2000
 
5.Project Number 96P00102
 
6.Title of Project Preparation and Application of Newly Designed Solid Electrolytes

7.Projetct Leader
Name Institution,Department Title of Position
Tatsumisago, Masahiro Osaka Prefecture University, Graduate School of Engineering Professor

8.Core Members

Names Institution,Department Title of Position
Imanaka, Nobuhito Osaka University, Graduate School of Engineering Assoc. Prof.
Kawamura, Jun-ichi Tohoku University, Institute of Multidisciplinary Research for Advanced Materials Assoc. Prof.
Sato, Mineo Niigata University, College of Engineering Professor

9.Cooperating Researchers

Names Institution,Department Title of Position
Machida, Nobuya Konan University, Faculty of Science Assoc. Prof.
Tadanaga, Kiyoharu Osaka Prefecture University, Graduate School of Engineering Assoc. Prof.
Matsuda, Atsunori Osaka Prefecture University, Graduate School of Engineering Lecturer

10.Summary of Research Results

1. Sulfide-based lithium ion conducting glasses were prepared by rapid melt-quenching and mechanical milling. The glasses exhibited high conductivities in the order of 10-4 Scm-1 at room temperature. The transport number of lithium ions of the glasses was almost unity and the potential window as solid electrolytes was wider than 10 V.
2. A variety of electrode materials for all solid state lithium batteries were developed; Li-Co-Ni-O positive electrode and Li-Si negative electrode are the examples. Electrochemical cells were constructed using sulfide based glasses as an electrolyte and those materials shown above as electrodes. The charge-discharge capacity was more than 70 mAhcm-2 till about the 10th cycle and became stable after the 10th cycle.
3. High temperature crystalline phase with high Li ion conduction in the Li-In-P-O system was successfully stabilized at room temperature. Thin films of the high temperature phase was successfully prepared by using an RF-sputtering procedure.
4. A variety of multi-valent ion conducting ceramics in the tungstate and phosphate based systems were developed and the transport number of multi-valent ions in these ceramics was confirmed to be almost unity. Single crystals were obtained for the trivalent ion conductors and the ion conduction mechanism was clarified on the basis of the results. Multi-valent ion conducting polymers were also successfully prepared.
5. Multi-valent ion conducting ceramics were applied in new type gas sensors as a solid electrolyte.

11.Key Words

(1)Solid electrolyte、(2)Ion conduction、(3)Solid state battery
(4)Gas sensor、(5)Ionics、(6)Lithium ion
(7)Mechanical milling、(8)Superionic conductor、(9)Glass ceramics

12.References

[Reference Articles]
Author Title of Article
M. Tatsumisago Preparation and Characterisation of Superionic Li2S-SiS2-Li4GeO4 Glasses
Journal Volume Year Pages Concerned
Phys. Chem. Glasses 38 1997 63-65

Author Title of Article
S. Lee Fragility and Local Structure of AgI-Ag2O-B2O3 Glasses
Journal Volume Year Pages Concerned
Phys. Chem. Glasses 38 1997 144-147

Author Title of Article
N. Torata Microstructure of α-AgI-frozen Composites in the AgI-Ag2O-B2O3 System after Heat Treatment
Journal Volume Year Pages Concerned
J. Mater. Sci. Lett. 16 1997 1012-1016

Author Title of Article
N. Itakura Effect of Heat Treatment on Rapidly Quenched AgI-Based Silver Orthoborate Glasses Containing Large Amounts of AgI
Journal Volume Year Pages Concerned
J. Am. Ceram. Soc. 80 1997 3209-3212

Author Title of Article
C. P. Varsamis Coordination States of Molybdenum and the Nature of Copper Ion Sites in the Superionic Glasses xCul・(1-x)Cu2MoO4 (x=0.4, 0.5) Studied by Infrared Reflectance Spectroscopy
Journal Volume Year Pages Concerned
J. Phys. Chem. B101 1997 3734

Author Title of Article
Yin Xia 7Li and 6Li Solid State NMR Studies of Structure and Dynamics in LiNbO3-WO3 Solid Solutions
Journal Volume Year Pages Concerned
J. Phys. Chem. B101 1997 9180

Author Title of Article
M. Sato Synthesis and Properties of Lithium Ion Conductors Li3-2x(Sc1-xZrx)2(PO4)3
Journal Volume Year Pages Concerned
J. Alloys Comp. 250 1997 510-514

Author Title of Article
T. Suzuki Stabilization of Superionic Conduction Phase in Li3Sc2(PO4)3
Journal Volume Year Pages Concerned
Solid State 104 1997 27-33

Author Title of Article
K. Toda Synthesis and Structure Determination of New Layered Perovskite Compound, KLaTa2O7
Journal Volume Year Pages Concerned
J. Alloys Comp. 249 1997 256-259

Author Title of Article
K. Toda Unusual Concentration Quenching of Europium Luminescence in New Layered Perovskite Compound, RbLa1-xEuxTa2O7(0≦x≦1)
Journal Volume Year Pages Concerned
J. Lumin. 71 1997 71-75

Author Title of Article
K. Toda Synthesis and High Ionic Conductivity of New Layered Perovskite Compounds, AgLaTa2O7 and AgCa2Ta3O10
Journal Volume Year Pages Concerned
Solid State Ionics 93 1997 177-181

Author Title of Article
S. Nakayama CO2 Gas Sensor Using the Potassium Ionic Conductor K2O・Sm2O3・6SiO2
Journal Volume Year Pages Concerned
J. Ceram. Soc. Jpn. 105 1997 225-257

Author Title of Article
K. Toda Structure Determination of New Layered Perovskite Compounds, NaLaTa2O7, Synthesized by Ion-Exchange Reaction
Journal Volume Year Pages Concerned
J. Ceram. Soc. Jpn. 105 1997 482-485

Author Title of Article
M. Sato Ionic Conductivity of LiLnSiO4(Ln = La, Sm) Thin Films Prepared by Sol-Gel Method
Journal Volume Year Pages Concerned
Chem. Lett. 1997 1997 657-658

Author Title of Article
Y. Kobayashi Trivalent Al3+ ion conduction in aluminum tungstate solid
Journal Volume Year Pages Concerned
Chem. Mater. 9 1997 1649-1654

Author Title of Article
N. Imanaka Rare Earth Contribution in Solid State Electrolytes, Especially in Chemical Sensor Field
Journal Volume Year Pages Concerned
J. Alloys and Compounds 250 1997 492-500

Author Title of Article
M. Morita Electrocatalytic Activity of Cerium (III) Incorporated in a Nafion Film on a Glassy Carbon Support
Journal Volume Year Pages Concerned
Denki Kagaku 65 1997 490-492

Author Title of Article
M. Morita Ionic Conductivities of Polymeric Solid Electrolyte Films Containing Rare Earth Ions
Journal Volume Year Pages Concerned
J. Alloys and Compounds 250 1997 524-527

Author Title of Article
A. Hayashi X-Ray Photoelectron Spectroscopy of (100-x)(0.6Li2S ・ 0.4SiS2) ・ xLi4Sio4 Oxysulphide Glasses
Journal Volume Year Pages Concerned
Phys. Chem. Glasses 39 1998 145-150

Author Title of Article
A. Hayashi Structural Investigation of 95(0.6Li2S・0.4SiS2)・5Li4SiO4 Oxysulfide Glass by Using X-Ray Photoelectron Spectroscopy
Journal Volume Year Pages Concerned
J. Am. Ceram. Soc. 81 1998 1305-1309

Author Title of Article
A. Matsuda Proton Conductive Silica Gels Doped with Several Acids and Their Application to Electric Double-Layer Capacitor
Journal Volume Year Pages Concerned
Chem. Lett. 1998 1998 1189-1190

Author Title of Article
A. Matsuda Electric Double-Layer Capacitors Using HClO4-Doped Silica Gels as a Solid Electrolyte
Journal Volume Year Pages Concerned
Solid State Ionics 113-115 1998 91-102

Author Title of Article
A. Hayashi Thermal and Electrical Properties of Rapidly Quenched Li2S-SiS2-Li2O-P2O5 Oxysulfide Glasses
Journal Volume Year Pages Concerned
Solid State Ionics 113-115 1998 733-738

Author Title of Article
M. Tatsumisago Microstructure of AgI-Ag2O-B2O3 Fast Ion Conducting Glasses with Large Amounts of AgI
Journal Volume Year Pages Concerned
J. Non-Cryst. Solids 232-234 1998 267-273

Author Title of Article
Y. Kowada Electronic States of Ag Ions in AgI-Based Superionic Conducting Glasses
Journal Volume Year Pages Concerned
J. Non-Cryst. Solids 232-234 1998 497-501

Author Title of Article
N. Machida FT-IR, FT-Raman, and 95Mo MAS-NMR Studies on the Structure of Ionically Conducting Glasses in the System AgI-Ag2O-MoO3
Journal Volume Year Pages Concerned
Solid State Ionics 107 1998 255

Author Title of Article
H. Hayashi Glass formation and ac conductivity in LiNO3-1, 3-diaminopropane
Journal Volume Year Pages Concerned
J. Non-Cryst. Solids 242 1998 33-39

Author Title of Article
J. Kawamura Frequency dependent conductivity of organic-inorganic mixed superionic conductor glasses
Journal Volume Year Pages Concerned
Solid State Ionics 113-115 1998 703-709

Author Title of Article
P. O. Maurin NMR study of the dynamics and structure of a good glass former LiCl-RH2O
Journal Volume Year Pages Concerned
Ber. Bunsenges. Phys. Chem. 102 1998 152-155

Author Title of Article
K. Suzuki Hierarchy of dynamic structure of super-ionic conducting glass CuI-Cu2MoO4
Journal Volume Year Pages Concerned
J. Non-Cryst. Solids 232-234 1998 278-285

Author Title of Article
M. Takahashi Single Crystal Growth and Structure Determination of a New Oxyapatite, NaLa9(GeO4)8O2
Journal Volume Year Pages Concerned
J. Solid State Chem. 139 1998 304-309

Author Title of Article
T. Honma Concentration Quenching of the Eu3+-Activated Luminescence in Some Layered Perovskites with Two-Dimensional Arrangement
Journal Volume Year Pages Concerned
J. Phys. Chem. Solids 59 1998 1187-1193

Author Title of Article
Z. -G. Ye Synthesis, Structure and Properties of the Magnetic Relaxor Ferroelectric Pb(Fe2/3W1/3)O3 [PFW]
Journal Volume Year Pages Concerned
J. Korean Phys. Soc. 32 1998 S1028

Author Title of Article
K. Toda Chemical and Electrochemical Intercalation of Lithium into the Tantalates with the Layered Perovskite Structure
Journal Volume Year Pages Concerned
Denki Kagaku 66 1998 1241-1247

Author Title of Article
M. Sato Lithium Intercalation and Cathode Performance of Li2CrTi(PO4)3
Journal Volume Year Pages Concerned
Denki Kagaku 66 1998 1236-1240

Author Title of Article
K. Yoshida Cathode Characteristics of Lithium Transition Metal Phosphate Synthesized by Ion-Exchange Reaction
Journal Volume Year Pages Concerned
Key Engineering Materials 157-158 1998 289-296

Author Title of Article
T. Suzuki Structure Refinement of Lithium Ion Conductors Li3Sc2(PO4)3 and Li3-2x(Sc1-xMx)2(PO4)3(M=Ti, Zr) with x=0.10 by Neutron Diffraction
Journal Volume Year Pages Concerned
Solid State Ionics 113-115 1998 89-96

Author Title of Article
K. Toda Structural Chemistry of New Ion-Exchangeable Tantalates with Layered Perovskite Structure
Journal Volume Year Pages Concerned
Solid State Ionics 113-115 1998 501-508

Author Title of Article
S. Tamura Trivalent Aluminum Ionic Conduction in the Aluminum Tungstate-Scandium Tungstate-Lutetium Tungstate Solid Solution System
Journal Volume Year Pages Concerned
Chem. Mater. 10 1998 1958

Author Title of Article
N. Imanaka Trivalent Rare Earth Ion Conduction in the Rare Earth Tungstates with the Sc2(WO4)3-Type Structure
Journal Volume Year Pages Concerned
Chem. Mater. 10 1998 2006

Author Title of Article
G. Adachi The Binary Rare Earth Oxides
Journal Volume Year Pages Concerned
Chem. Rev. 98 1998 1479-1514

Author Title of Article
N. Imanaka Trivalent Aluminum Ion Conducting Characteristics in Al2(WO4)3 Single Crystals
Journal Volume Year Pages Concerned
Chem. Mater. 10 1998 2542-2545

Author Title of Article
Y. Kobayashi Trivalent Ion Conduction of the Sc2(WO4)3-Gd2(WO4)3 System
Journal Volume Year Pages Concerned
Solid State Ionics 111 1998 59-65

Author Title of Article
N. Imanaka Trivalent Ion Conducting Solid Electrolytes with the Sc2(WO4)3-type Structure
Journal Volume Year Pages Concerned
Molten Salts 41 1998 177-190

Author Title of Article
N. Imanaka Trivalent Al3+ Ion Conduction in Al2(WO4)3 Solids
Journal Volume Year Pages Concerned
Electrochem. and Solid-State Letters 1 1998 271-272

Author Title of Article
Y. Kobayashi Quantitative Demonstration of Al^3+ Ion Conduction in Al2(WO4)3 Solids
Journal Volume Year Pages Concerned
Solid State Ionics 113-115 1998 545-552

Author Title of Article
J. Koehler Electrical Conductivity in Al2(WO4)3-Al2O3 Composites
Journal Volume Year Pages Concerned
Solid State Ionics 113-115 1998 553-558

Author Title of Article
J. Koehler Multivalent Cationic Conduction in Solids
Journal Volume Year Pages Concerned
Chem. Mat. 10 1998 3790-3812

Author Title of Article
M. Morita A Raman Spectroscopic Study of Organic Electrolyte Solutions Based on Binary Solvent Systems of Ethylene Carbonate with Low Viscosity Solvents Dissolving Different Lithium Salts
Journal Volume Year Pages Concerned
J. Chem. Soc., Faraday Trans. 94 1998 3451-3456

Author Title of Article
M. Morita New Polymeric Gel Electrolytes Consisting of Oligo(ethylene oxide)-grafted Poly-methacrylate Matrices for Rechargeable Lithium Batteries
Journal Volume Year Pages Concerned
Solid State Ionics 113-115 1998 117-122

Author Title of Article
A. Matsuda Electric Double-Layer Capacitor Using Composites Composed of Phosphoric Acid-Doped Silica Gel and Styrene-Ethylene-Butylene-Styrene Elastomer as a Solid Electrolyte
Journal Volume Year Pages Concerned
J. Power Sources 77 1999 12-16

Author Title of Article
M. Tatsumisago Crystallization of α-AgI from AgI-Ag2O-MxOy (MxOy=B2O3, GeO2, WO3) Melts and Glasses
Journal Volume Year Pages Concerned
Solid State Ionics 121 1999 193-200

Author Title of Article
A. Hayashi High-Resolution Solid-State NMR Studies of Ionically Conductive Li2S-SiS2-Li2O-P2O5 Oxysulfide Glasses
Journal Volume Year Pages Concerned
Phys. Chem. Glasses 40 1999 140-145

Author Title of Article
A. Matsuda Application of Composites Composed of Phosphoric Acid-Doped Silica Gel and Styrene-Ethylene-Buthylene-Styrene Elastomer to Electric Double-Layer Capacitors
Journal Volume Year Pages Concerned
Korean J. Ceramics 5 1999 353-356

Author Title of Article
H. Morimoto Mechanochemical Synthesis of New Amorphous Materials of 60Li2S ・ 40SiS2 with High Lithium Ion Conductivity
Journal Volume Year Pages Concerned
J. Am. Ceram. Soc. 82 1999 1352-1354

Author Title of Article
A. Hayashi Crystallization of Li2S-SiS2 Based Lithium Ion Conducting Glasses
Journal Volume Year Pages Concerned
Phys. Chem. Glasses 40 1999 333-338

Author Title of Article
A. Hayashi Structural Change Accompanying Crystallization in the Lithium Ion Conductive Li2S-SiS2-Li3PO4 Oxysulfide Glasses
Journal Volume Year Pages Concerned
J. Ceram. Soc. Jpn. 107 1999 510-516

Author Title of Article
A. Hayashi Electrochemical Properties for the Lithium Ion Conductive (100-x)(0.6Li2S. 0.4SiS2) ・ xL4iSiO4 Oxysulfide Glasses
Journal Volume Year Pages Concerned
J. Electrochem. Soc. 146 1999 3472-3475

Author Title of Article
K. Hasegawa Preparation of Novel Lithium Ion Conductors Composed of LiSCN-AlCl3 and Silica Perticles
Journal Volume Year Pages Concerned
J. Electrochem. Soc. 146 1999 3539-3542

Author Title of Article
R. Sakamoto Preparation of Fast Lithium Ion Conducting Glasses in the System Li2S-SiS2-Li3N
Journal Volume Year Pages Concerned
J. Phys. Chem. B103 1999 4029-4031

Author Title of Article
T. Kubo Isothermal Tetragonal to Monoclinic Phase Transition around Room Temperature in 2.0mol% Yittria-doped Zirconia Ceramics
Journal Volume Year Pages Concerned
J. Jpn. Soc. Powder and Powder Metallurgy 46 1999 496

Author Title of Article
T. Kubo Phase Separation of ZnFe2O4-Fe3O4 Solid Solution During Low Temperature Oxidation in Air
Journal Volume Year Pages Concerned
J. Jpn. Soc. Powder and Powder Metallurgy 46 1999 787

Author Title of Article
H. Maekawa High temperature 1H NMR study of proton conducting oxide SrCe0.95Y0.05/SUB>H0.004O3-d
Journal Volume Year Pages Concerned
Solid State Ionics 122 1999 231-236

Author Title of Article
J. Kawamura Ag K-edge EXAFS of AgI-alkylammonium iodide glasses
Journal Volume Year Pages Concerned
Solid State Ionics 121 1999 37-41

Author Title of Article
M. Hosono Structure and ionic conductivity of rapidly quenched AgI- Ag2WO4 superionic conductor glasses
Journal Volume Year Pages Concerned
J. Non-Cryst. Solids 244 1999 81-88

Author Title of Article
T. Kamiyama Dynamic properties of concentrated LiNO3-glycerolsolutions
Journal Volume Year Pages Concerned
J. Phys. Chem. Solids 60 1999 1549-1552

Author Title of Article
T. Muraki Ionic conductivity and Tl-205 NMR in the molten LiI-TlI system
Journal Volume Year Pages Concerned
High Temp. Mater. Processes 18 1999 49-54

Author Title of Article
M. Kawasaki Ionic conductivity of Agx(GeSe3)1-x(0<=x<=0.571)glasses
Journal Volume Year Pages Concerned
Solid State Ionics 123 1999 259-269

Author Title of Article
J. Kawamura AC Conductivity and NMR Relaxation in Supercooled Liquid and Glassy State of LiNO3-Diamminopropane
Journal Volume Year Pages Concerned
Slow Dynamics in Complex Systems: Eighth Tohwa University International Symposium 469 1999 541-542

Author Title of Article
K. Toda Possibility of Superconductivity in New Reduced Tantalate and Titanatewith the Layered Perovskite Structure
Journal Volume Year Pages Concerned
J. European Ceram. Soc. 19 1999 1525-1529

Author Title of Article
S. Tobitsuka Single Crystal Growth and Domain Structure of CsLaTa2O7
Journal Volume Year Pages Concerned
J. European Ceram. Soc. 19 1999 1559-1562

Author Title of Article
K. Yoshikawa Synthesis and Lithium Ionic Conductivity of Li3-2x(In1-xZrx)2(PO4)3(0≦X≦0.20)
Journal Volume Year Pages Concerned
J. European Ceram. Soc. 19 1999 879-882

Author Title of Article
K. Toda Synthesis and Structure Determination of Reduced Tantalates, Li2LaTa2O7, Li2Ca2Ta3O10 and Na2Ca2Ta3O10, with a Layered Perovskite Structure
Journal Volume Year Pages Concerned
J. Mater. Chem. 9 1999 799-803

Author Title of Article
S. Nakayama Oxide Inoic Conductivity of Apatite Type Nd9.33(SiO4)6O2 Single Crystal
Journal Volume Year Pages Concerned
J. European Ceram. Soc. 19 1999 507-510

Author Title of Article
T. Suzuki The Ionic Conductivity of New Ionic Conductor Li3(In1-xScx)2(PO4)3
Journal Volume Year Pages Concerned
Key Engineering Materials 169-170 1999 205-208

Author Title of Article
K. Toda New Layered Perovskite Compound Synthesized by the Soft Chemistry: KCa2Ta3O10
Journal Volume Year Pages Concerned
Key Engineering Materials 169-170 1999 231-234

Author Title of Article
H. Ohkawa Improvement of Discharge Capacity of beta-Fe3(SO4)3-Type Li3V2(PO4)3 by Stabilizing High Temperature Orthorhombic Phase at Room Temperature
Journal Volume Year Pages Concerned
Chem. Lett. 1999 1999 1017-1018

Author Title of Article
Y. Kobayashi Trivalent Ion Conduction of the Sc2(WO4)3-Lu2(WO4)3 System
Journal Volume Year Pages Concerned
Solid State Ionics 118 1999 325-330

Author Title of Article
A. Dabkowski Crystal Growth of Aluminum Tungstate
Journal Volume Year Pages Concerned
J. Cryst. Growth 197 1999 879-882

Author Title of Article
S. Tamura Ceramics Sinterability Enhancement at an Ambient Pressure by the Boron Oxide Addition
Journal Volume Year Pages Concerned
Adv. Mater. 11 1999 64-66

Author Title of Article
N. Imanaka Trivalent Ion Conduction in the Sc2(WO4)3 Type Structure
Journal Volume Year Pages Concerned
Materials Science Forum (Trans Tech Publications Ltd) 315-317 1999 331-338

Author Title of Article
J. Koehler Trivalent Cationic Conduction Properties in M2(WO4)3-Al2O3(M=Al, Sc, Lu) Composites
Journal Volume Year Pages Concerned
Materials Science Forum (Trans Tech Publications Ltd) 315-317 1999 537-544

Author Title of Article
N. Imanaka Single Crystal Growth of Aluminum Tungstate-Scandium Tungstate Solid Solution by Czochralski method
Journal Volume Year Pages Concerned
J. Cryst. Growth 200 1999 169-171

Author Title of Article
J. Koehler New cation conducting solid electrolytes with the Sc2(WO4)3 type structure
Journal Volume Year Pages Concerned
J. Mater. Chem. 9 1999 1357-1362

Author Title of Article
J. Koehler Rare Earth Conduction in M2(WO4)3-Al2O3 (M=Sc, Lu) Composites
Journal Volume Year Pages Concerned
Solid State Ionics 122 1999 173-182

Author Title of Article
N. Imanaka The Enhancement of Trivalent Scandium Ion Conduction by Forming Scandium Tungstate-Scandium Tantalate Composites
Journal Volume Year Pages Concerned
Electrochem. and Solid-State Letters 2 1999 330-332

Author Title of Article
G. Adachi Trivalent Cation Conduction in the Sc2(WO4)3-Type Structure
Journal Volume Year Pages Concerned
Electrochemistry 67 1999 744-751

Author Title of Article
N. Imanaka Trivalent Scandium Ion Conduction in the Scandium Tungstate Alumina Composites
Journal Volume Year Pages Concerned
Solid State Ionics 126 1999 41-46

Author Title of Article
N. Imanaka Divalent Magnesium Ionic Conduction in the Magnesium Phosphate Based Composites
Journal Volume Year Pages Concerned
Chem. Lett.   1999 939-940

Author Title of Article
N. Imanaka Electrochemical In2O3 Crystal Growth with the Aid of In3+ Conducting Solid Electrolyte
Journal Volume Year Pages Concerned
Electrochem. and Solid-State Letters 2 1999 556-558

Author Title of Article
J. Koehler Indiumwolframat, In2(WO4)3-Ein In3+ leitender Festkoerperelektrolyt (Indium tungstate, In2(WO4)3-an In3+ conducting solid electrolyte)
Journal Volume Year Pages Concerned
Z. Anorg. Allgem. Chem. 625 1999 1890-1896

Author Title of Article
N. Imanaka A New Realization Route of Al2(WO4)3-Ln2(WO4)3(Ln=Lu, Eu) Solid Solution Single Crystals by Electrochemical Ion Doping
Journal Volume Year Pages Concerned
Electrochem. and Solid-State Letters 2 1999 570-571

Author Title of Article
N. Imanaka Carbon Dioxide Gas Sensor Based on Trivalent Sc3+ Ion Conducting Sc2(WO4)3 Solid Electrolyte
Journal Volume Year Pages Concerned
Electrochem. and Solid-State Letters 2 1999 602-604

Author Title of Article
S. Tamura Trivalent Sc3+ Ion Conduction in Sc1/3Zr2(PO4)3 Solids with the NASICON Type Structure
Journal Volume Year Pages Concerned
Adv. Mater 11 1999 1521-1523

Author Title of Article
N. Imanaka Trivalent Ion Conduction in the Scandium Tungstate Type Structure
Journal Volume Year Pages Concerned
Materials Research Society(MRS) Proceedings   1999 647-652

Author Title of Article
N. Imanaka Carbon Dioxide Gas Sensor with Trivalent Sc3+ Ion Conducting Sc2(WO4)3 Solid Electrolyte
Journal Volume Year Pages Concerned
Proceedings of the 1999 Joint International Meeting, Symposium-Chemical Sensors IV   1999 255-261

Author Title of Article
N. Yoshimoto Electrochemical Behavior of Magnesium in Organic Liquid Electrolytes
Journal Volume Year Pages Concerned
Hyomen Gijutsu 50 1999 839-840

Author Title of Article
K. Hirata Preparation and Characterization of Highly Proton-Conductive Composites Composed of SiO2-P2O5 Gel and Styrene-Ethylene-Buthylene-Styrene Elastomer
Journal Volume Year Pages Concerned
J. Sol-Gel Sci. Tech. 17 2000 61-69

Author Title of Article
A. Matsuda Proton-Conductive Composites Composed of Phosphoric Acid-Doped Silica Gel and Organic Polymers with Sulfo Groups
Journal Volume Year Pages Concerned
J. Ceram. Soc. Jpn. 108 2000 45-50

Author Title of Article
H. Morimoto Mechanochemical Synthesis of the High Lithium Ion Conductive Amorphous Materials in the Systems Li2S-SiS2 and Li2S-SiS2-Li4SiO4
Journal Volume Year Pages Concerned
J. Ceram. Soc. Jpn. 108 2000 128-131

Author Title of Article
K. Hirata Preparation and Characterization of Highly Proton-Conductive Composites Composed of Phosphoric Acid-Doped Silica Gel and Styren-Ethylene-Butylene-Styrene Elastomer
Journal Volume Year Pages Concerned
J. Sol-Gel Sci. Tech. 17 2000 61-69

Author Title of Article
M. Tatsumisago Preparation and Structure of Amorphous Solid Electrolytes Based on Lithium Sulfide
Journal Volume Year Pages Concerned
J. Non-Cryst. Solids 274 2000 30-38

Author Title of Article
A. Hayashi Crystallization Process of Lithium Oxysulfide Glasses
Journal Volume Year Pages Concerned
J. Non-Cryst. Solids 276 2000 27-34

Author Title of Article
T. Minami Superionic Borate Glasses: Microstructure and Fragility of AgI-Ag2O-B2O3 Glasses
Journal Volume Year Pages Concerned
Phys. Chem. Glasses 41 2000 236-241

Author Title of Article
A. Hayashi Development of Lithium Ion Conducting Oxysulfide Glasses
Journal Volume Year Pages Concerned
Proc. 7th Asian Conf. on Solid State Ionics   2000 177-186

Author Title of Article
T. Kanzaki Preparation of Proton Conductive Phosphosilicate Gels Derived from 2-(Diethoxyphosphoryl)ethyltriethoxysilane
Journal Volume Year Pages Concerned
Chem. Lett. 11 2000 1314-1315

Author Title of Article
H. Yamashita Formation Process of 60Li2S ・ 40SiS2 Amorphous Materials with High Lithium Ion Conductivity Prepared by Mechanical Milling
Journal Volume Year Pages Concerned
J. Ceram. Soc. Jpn. 108 2000 973-978

Author Title of Article
K. Tadanaga Preparation of AgI-Al2O3 Composites with High Ionic Conductivity Using Al2O3 Aerogel and Xerogel
Journal Volume Year Pages Concerned
J. Electrochem. Soc. 147 2000 4061-4064

Author Title of Article
N. Machida Mechano Chemical Synthesis of a Silver Ion Conductor in the System AgI-Ag3PO4
Journal Volume Year Pages Concerned
Solid Satate Ionics 136-137 2000 381-386

Author Title of Article
Y. Kowada Variation of Electronic State of AgI-Based Superionic Conductors with Movement of Ag Ions
Journal Volume Year Pages Concerned
Solid State Ionics 136-137 2000 393-397

Author Title of Article
M. Tatsumisago Preparation of Amorphous Solid Electrolytes in the System Li2S-SiS2-Li4SiO4 by Mechanical Milling
Journal Volume Year Pages Concerned
Solid State Ionics 136-137 2000 483-488

Author Title of Article
T. Minami Preparation and Characterization of Lithium Ion-Conducting Oxysulfide Glasses
Journal Volume Year Pages Concerned
Solid State Ionics 136-137 2000 1015-1023

Author Title of Article
N. Kuwata Ag-109 NMR Study of AgI-Based Glasses Containing Frozen -AgI Nanocrystals
Journal Volume Year Pages Concerned
Solid State Ionics 136-137 2000 1061-1066

Author Title of Article
S. Nishiwaki Preparation and Proton Conductivity of Surfactant-Templated Mesoporous Silica Gels Impregnated with Protonic Acids
Journal Volume Year Pages Concerned
J. Am. Ceram. Soc. 83 2000 3004-3008

Author Title of Article
A. Matsuda Application of Protonic Acid-Doped Silica Gels to Electric Double-Layer Capacitors
Journal Volume Year Pages Concerned
J. Sol-Gel Sci. Tech. 19 2000 581-584

Author Title of Article
N. Sakai Synthesis and Characterization of Ionic Conductors; Li12/7+x(Li4/7Ti24/7-xMx)O8 (M=Al, Cr and Fe) &Li12/7+2x(Li4/7Ti24/7-2xMg2x)O8 with Tunnel Structure
Journal Volume Year Pages Concerned
Key Engineering Materials 181-182 2000 167-171

Author Title of Article
T. Suzuki Single Crystal Growth of Lithium Ion Conductive Phosphates
Journal Volume Year Pages Concerned
Key Engineering Materials 181-182 2000 183-187

Author Title of Article
K. Toda Crystal Structure of Fe16N2
Journal Volume Year Pages Concerned
Key Engineering Materials 181-182 2000 213-217

Author Title of Article
K. Toda Physical Properties of Non-Stoichiometric Rare Earth Orthoniobates
Journal Volume Year Pages Concerned
Key Engineering Materials 181-182 2000 217-221

Author Title of Article
N. Sakai Trivalent Ionic Conductivity of Perovskite-Type Yx(Ta3xW1-3x)O3
Journal Volume Year Pages Concerned
Electrochemistry 68 2000 504-506

Author Title of Article
K. Toda Oxygen defect in non-stichiometric europium orthoniobate, EuxNbO4-1.5(1-x)
Journal Volume Year Pages Concerned
Solid State ionics 136-137 2000 25-30

Author Title of Article
M. Sato Enhancement of Discharge Capacity of Li3V2(PO4)3 by Stabilizing Orthorhombic Phase at Room Temperature
Journal Volume Year Pages Concerned
Solid State Ionic 135 2000 137-142

Author Title of Article
N. Imanaka Single Crystal Growth of Aluminum Tungstate-Lutetium Tungstate Solid Solution by Modified CZ Method
Journal Volume Year Pages Concerned
J. Cryst. Growth 209 2000 217-219

Author Title of Article
N. Imanaka Solid Solution Single Crystal Growth of Aluminum Tungstate-Scandium Tungstate System by Modified CZ Method
Journal Volume Year Pages Concerned
J. Cryst. Growth 208 2000 466-470

Author Title of Article
N. Imanaka Inclusions of Nanometer sized Al2O3 Particles in a Crystalline (Sc, Lu)2(WO4)3 Matrix
Journal Volume Year Pages Concerned
J. Am. Ceram. Soc. 83 2000 427-429

Author Title of Article
N. Imanaka CO2 Gas Sensing with the Combination of Trivalent Al3+ Ion Conducting Al2(WO4)3 Single Crystal Solid and Oxide Ion Conducting Stabilized Zirconia
Journal Volume Year Pages Concerned
Chem. Lett.   2000 68-69

Author Title of Article
J. Koehler Direkter Nachweis Dreiwertiger Kationenleitung in Nd3+-beta"-Al2O3(Direct evidence for trivalent cationic conduction in Nd3+-beta"-Al2O3)
Journal Volume Year Pages Concerned
Angew. Chem. Inter. Edition 39 2000 904-907

Author Title of Article
N. Imanaka Trivalent Ion Conducting Solid Electrolytes
Journal Volume Year Pages Concerned
Solid State Ionics 136-137 2000 319-324

Author Title of Article
S. Tamura A New Trivalent Cationic Conducting Solid Electrolyte with NASICON type Structure
Journal Volume Year Pages Concerned
Solid State Ionics 136-137 2000 423-426

Author Title of Article
M. Hiraiwa Single Crystal Growth of Trivalent Ion Cconducting Aluminum Tungstate-Scandium Tungstate Solid Solution
Journal Volume Year Pages Concerned
Solid State Ionics 136-137 2000 427-430

Author Title of Article
N. Imanaka Tetravalent Ion(Zr4+) Conduction in Solids
Journal Volume Year Pages Concerned
Chem. Lett.   2000 452-453

Author Title of Article
N. Imanaka Electronic state of the trivalent ionic conductors with Sc2(WO4)3 type structure
Journal Volume Year Pages Concerned
Solid State Ionics 130 2000 179-182

Author Title of Article
N. Imanaka Trivalent Rare Earth Ion Conduction in the Scandium Tungstate Type Structure
Journal Volume Year Pages Concerned
J. Alloys and Comp. 303-304 2000 303-306

Author Title of Article
N. Imanaka Divalent Magnesium Ion Conducting Characteristics in Phosphate Based Solid Electrolyte Composites
Journal Volume Year Pages Concerned
J. Mater. Chem. 10 2000 1431-1435

Author Title of Article
Y. Okazaki Trivalent Sc^3+ Ion Conduction in the Sc2(WO4)3-Sc2(MoO4)3 Solid Solution
Journal Volume Year Pages Concerned
Solid State Ionics 136-137 2000 437-440

Author Title of Article
J. Koehler Enhanced Al3+ conduction in Al2(WO4)3-Sc2(MoO4)3 solid solutions
Journal Volume Year Pages Concerned
Solid State Ionics 136-137 2000 431-436

Author Title of Article
S. Tamura A CO2 sensor based on a trivalent ion conducting Sc1/3Zr2(PO4)3 solid electrolyte
Journal Volume Year Pages Concerned
Adv. Mater. 12 2000 898-901

Author Title of Article
N. Imanaka Divalent Magnesium Ionic Conduction in Mg1-2x(Zr1-xNbx)4P6O24(x=0-0.4) Solid Solutions
Journal Volume Year Pages Concerned
Electrochem. and Solid-State Letters 3 2000 327-329

Author Title of Article
N. Imanaka Trivalent Ion Conduction in the Molybdates with the Sc2(WO4)3-Type Structure
Journal Volume Year Pages Concerned
Chem. Mater. 12 2000 1910-1913

Author Title of Article
N. Imanaka Carbon Dioxide Sensing with the combination of Divalent Magnesium Ion and Oxide Ion Conducting Solid Electrolytes
Journal Volume Year Pages Concerned
Chem. Lett.   2000 834-835

Author Title of Article
N. Imanaka Carbon Dioxide Gas Sensing with the Combination of Trivalent Sc3+ Ion Conducting Sc2(WO4)3 and O2- Ion Conducting Stabilized Zirconia Solid Electrolytes
Journal Volume Year Pages Concerned
Solid Sate Ionics 133 2000 279-285

Author Title of Article
N. Imanaka Thermal Contraction Behavior in Al2(WO4)3 Single Crystal
Journal Volume Year Pages Concerned
J. Cryst. Growth 220 2000 176-179

Author Title of Article
N. Imanaka A Carbon Dioxide Gas Sensing for a Global Monitoring
Journal Volume Year Pages Concerned
Gratama Workshop 2000 Conference Report   2000 90-91

Author Title of Article
M. Morita Ionic Structure and Conductance Behavior of Plasticized Polymeric Compounds Containing Multi-Valent Cations
Journal Volume Year Pages Concerned
Electrochim. Acta 45 2000 1335-1340

Author Title of Article
M. Ishikawa Performance of Electric Double Layer Capacitors with Polymer Gel Electrolytes
Journal Volume Year Pages Concerned
Mat. Res. Symp. Proc. 575 2000 423-428

Author Title of Article
M. Morita Ionic Conductance of Polymeric Electrolytes Containing Lithium Salts Mixed with Rare Earth Salts
Journal Volume Year Pages Concerned
Solid State Ionics 136/137 2000 1167-1173

Author Title of Article
A. Hayashi Preparation of Li2S-P2S5 Amorphous solid Electrolytes by Mechanical Milling
Journal Volume Year Pages Concerned
J. Am. Ceam. Soc. 84 2001 477-479

Author Title of Article
N. Imanaka A chlorine gas sensor based on the combination of Mg2+ cation conducting and O2- anion conducting solid electrolytes with lanthanum oxychloride as an auxiliary electrode
Journal Volume Year Pages Concerned
Electrochem. Commun. 3 2001 49-51

Author Title of Article
N. Imanaka Chloride Ion Conducting Characteristics in Rare Earth Oxychlorides
Journal Volume Year Pages Concerned
Chem. Lett.   2001 130-131

Author Title of Article
H. Morimoto Anode Properties of Amorphous 50SiO. 50SnO Powders Synthesized by Mechanical Milling
Journal Volume Year Pages Concerned
Electrochem. Letters (in press) 4 2001  

Author Title of Article
T. Kanzaki Preparation of Proton Conductive Phosphosilicate Gels Derived from 2-(Diethylphosphatoethyl)triethoxysilane
Journal Volume Year Pages Concerned
Chem. Lett. (in press)   2001  

Author Title of Article
J. Kawamura Decoupoing of Lithium ionic conductivity in organic-inorganic complexed glasses
Journal Volume Year Pages Concerned
Solid State Ionics (in press)   2001  

Author Title of Article
R. Komiya Solid State Lithium Secondary Bateries Using an Amorphous Solid Electrolyte in the System (100-x)(0.6Li2S・SiO2)・xLi4SiO4 Obtained by Mechanochemical Synthesis
Journal Volume Year Pages Concerned
Solid. State. Ionics (in press)   2001  

Author Title of Article
M. Tatsumisago Formation Process of α-AgI stabilized composites from AgI-Ag2O-B2O3 Melts and Glasses
Journal Volume Year Pages Concerned
J. Non-Cryst. Solids (in press)   2001  

Author Title of Article
A. Matsuda Comparison of structure and Proton Conductivity of Phosphosilicate Gels derived from Several Kinds of Phosphorus-containing compounds
Journal Volume Year Pages Concerned
Solid State Ionics (in press)   2001  

Author Title of Article
A. Matsuda Proton conductivity of Acid-Impregnated Mesoporous silica Gels Prepared Using Surfactants as a Template
Journal Volume Year Pages Concerned
Solid State Ionics (in press)   2001  

Author Title of Article
Y. Aoyama Synthesis and characterization of perovskite-type ionic conductor:Li3yLa1-3y(Nb1-xWx)3O9
Journal Volume Year Pages Concerned
Key Engineering Materials (in press)   2001  

Author Title of Article
K. Toda New Synthetic Route of Perovskite Material in the Test Tube
Journal Volume Year Pages Concerned
Key Engineering Materials (in press)   2001  

Author Title of Article
M. Morita Influence of the Electrolyte Composition on the Charge and Discharge Characteristics of LiCr0.1Mn1.9O4 Positive Electrode
Journal Volume Year Pages Concerned
J. Power Sources (in press)   2001  

Author Title of Article
M. Morita Ionic Conductance Behavior of Polymeric Composite Solid Electrolytes Containing Lithium Aluminate
Journal Volume Year Pages Concerned
Electrochim. Acta (in press)   2001  

Author Title of Article
N. Yoshimoto Ionic Conductance of Polymeric Electrolytes Consisting of Magnesium Salts Dissolved in Cross-linked Polymer Matrix with Linear Polyether
Journal Volume Year Pages Concerned
Electrochim. Acta (in press)   2001  

Author Title of Article
M. Ishikawa Performance of Electric Double Layer Capacitors with Gel Electrolytes Containing an Asymmetric Ammonium Salt
Journal Volume Year Pages Concerned
Electrochemistry (in press)   2001  

Author Title of Article
M. Morita Utilization of Active carbon Fiber with Mesopore Structure for Electric Double Layer Capacitors
Journal Volume Year Pages Concerned
Electrochemistry (in press)   2001  


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