Lithium cell having a solid electrolyte constituted by a conduct

Details Lithium cell having a solid electrolyte constituted by a conduct Lithium cell having a solid electrolyte constituted by a conduct

1983-04-13

1984-10-23

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429193, H01M 618

Patent

active

044789203

ABSTRACT:
The electrolyte is constituted by a conductive vitreous compound having the formula aP.sub.2 S.sub.5, bLi.sub.2 S, cLiX, where X represents chlorine, bromine, or iodine, and where a, b, and c are numbers chosen so that the ratio b/(a+b) lies between 0.61 and 0.70, and so that the ratio c/(a+b+c) is less than or equal to a limit corresponding to the solubility in vitreous phase of LiX in the compound aP.sub.2 S.sub.5, bLi.sub.2 S, with the positive active material comprising 20% to 80% by volume solid electrolyte together with an electron conductor, the improvement wherein a substance chosen from the halogens and the chalcogens is included in the electrolyte in order to produce an in situ chemical reaction at the lithium electrolyte interface thereby creating an ionically conductive bonding layer comprising a lithium halogenide or chalcogenide.

REFERENCES:
patent: 4268587 (1981-05-01), Farrington et al.
patent: 4288505 (1981-09-01), Joshi et al.
patent: 4331750 (1982-05-01), Malugani et al.

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