Title:
【発明の名称】硫化物系リチウムイオン導電性固体電解質及びその合成法
Document Type and Number:
Japanese Patent JP3125507
Kind Code:
B2
Abstract:
PURPOSE:To obtain the subject solid electrolyte improved in ionic conductivity, by heating and melting a mixture of Li2S and other specific sulfide(s) in an inert gas flow containing moisture at a specified level or lower. CONSTITUTION:Mixed powder of Li2S powder and sulfide powder of X (X is at least one kind selected from B2S3, SiS2, GeS2 and P3S5) is put into a vitreous carbon crucible and melted under heating at ca.950 deg.C for 2hr or so in an inert gas flow (e.g. nitrogen gas flow) containing moisture at a level of <=100ppm. The resultant melt is poured into e.g. liquid nitrogen to obtain the objective highly ionically conductive solid electrolyte of formula aLi2S.bX (a+b=1). ALi2S-X-based sulfide glass is incorporated with a Li compound such as LiI or Li3PO4 followed by heat treatment under the same conditions as those mentioned above, affording a similar solid electrolyte of higher ionic conductivity.
Inventors:
Noboru Aoya
Kazunori Takada
Kazuya Iwamoto
Shigeo Kondo
Kazunori Takada
Kazuya Iwamoto
Shigeo Kondo
Application Number:
JP6854393A
Publication Date:
January 22, 2001
Filing Date:
March 26, 1993
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
C01B17/20; C03C3/32; C03C4/14; H01B1/06; H01G9/00; H01G9/025; H01G11/56; H01M6/18; H01M10/05; H01M10/0562; (IPC1-7): H01B1/06; C03C3/32; C03C4/14; H01G9/025; H01M6/18; H01M10/40
Domestic Patent References:
| JP4133209A | ||||
| JP4202024A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)