Lithium-ion conducting solid electrolyte

Details Lithium-ion conducting solid electrolyte Lithium-ion conducting solid electrolyte

1991-07-29

1993-06-08

Bell, Mark L.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

252 622, 252500, 252512, 252518, H01M 618, H01B 100

Patent

active

052178269

ABSTRACT:
A lithium-ion conducting solid electrolyte of the present invention comprises a parent material, a lithium-ion conducting sulfide glass represented by the formula Li.sub.2 S--X (X is at least one sulfide selected from the group consisting of B.sub.2 S.sub.3, SiS.sub.2, P.sub.2 S.sub.5, Al.sub.2 S.sub.3, and GeS.sub.2), and a high-temperature lithium-ion conducting compound (i.e. Li.sub.3 PO.sub.4 or Li.sub.2 SO.sub.4). The lithium-ion conducting solid electrolyte has higher ionic conductivity and higher decomposition voltage compared to the parent material. By the use of this solid electrolyte for electrical/chemical components such as batteries, condensers, electrochromic displays, and the like, electronic apparatus that includes such elements may have improved performance.

REFERENCES:
patent: 3506491 (1970-04-01), Buzzelli
patent: 4184015 (1980-01-01), Reau et al.
patent: 4434216 (1984-02-01), Joshi et al.
patent: 4465745 (1984-08-01), Akridge
patent: 4513070 (1985-04-01), Carette et al.
Akridge, J. R. and Vourlis, H. "Performance of Li/TiS.sub.2 Solid State Batteries Using Phosphorous Chalcogenide Network Former Glasses As Solid Electrolyte", Solid State Ionics, 28-30 pp. 841-846 (1988).

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