| Project/Area Number |
07555270
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 展開研究 |
|---|
| Research Field |
工業物理化学
|
|---|
| Research Institution | MIE UNIVERSITY |
|---|
Principal Investigator |
YAMAMOTO Osamu MIE UNIVERSITY FACULTY OF ENGINEERING,DEPARTMENT OF CHEMISTRY,PROFESSOR, 工学部, 教授 (70023116)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
KONNDO Sigeo Head researcher, Technical Laboratory, Matsushita Battery Co., 技術研究所, 主幹技師
IMANISHI Nobuyuki INSTRUMENTAL ANALYSIS CENTER,ASSOCIATE PROFESSOR, 機器分析センター, 助教授 (20223331)
TAKEDA Yasuo MIE UNIVERSITY FACULTY OF ENGINEERING,DEPARTMENT OF CHEMISTRY,ASSOCIATE PROFESSO, 工学部, 助教授 (60093051)
近藤 繁 松下電池工業(株), 技術研究所, 主幹技師
|
|---|
| Project Period (FY) |
1995 – 1997
|
| Project Status |
Completed (Fiscal Year 1997)
|
| Budget Amount *help |
¥10,100,000 (Direct Cost: ¥10,100,000)
Fiscal Year 1997: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1996: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1995: ¥6,100,000 (Direct Cost: ¥6,100,000)
|
|---|
| Keywords | SOLID ELECTROLYTE BATTERY / LITHIUM ION CONDUCTOR / SOLID STATE LITHIUM SECONDARY BATTERY / LITHIUM CALCOGENIDE GLASS / TEPE-CASTING METHOD / THIN FILM BATTERY / 全固体リチウム電池 / リチウム二次電池 / 硫化物ガラス / 固体電解質 |
|---|
| Research Abstract |
Oxysulfide glass, Li_3PO_4-Li_2S-SiS_2, shows a high ionic conductivity of 1.4x10^<-3>S/cm at ambient temperature and a wide electrochemical window. It is chemically and electrochemically stable against lithium metal. Li_xCoO_2 and In-Li_x, were found to be good candidates for the electrode materials in solid state batteries with the glass for their electrode reaction with high reversibility. The operation voltage was 3.3V,which was a high voltage for a solid state battery. The solid state battery constructed with the materials reveals excellent cycling property, high rate capability up to almost 1mA/cm^2, and extremely small residual current. The preparation of the thin film was tried using the tape-casting method. The composite with the lithium ion conductive polymer such as PEO-lithium salts brought the thin film electrolyte and electrode with around ten mum thick and showed high lithium ionic conductivity of 10^<-4>S/cm at room temperature. These results make us expect the possibility of high safety lithium secondary battery.
|
