Fast ion conductors

Details Fast ion conductors Fast ion conductors

1981-04-30

1982-11-02

LeFevour, Charles F.

Chemistry: electrical and wave energy

Processes and products

429193, 429194, 423594, 2521821, H01M 1044

Patent

active

043572154

ABSTRACT:
There is interest in the use of solid-solution electrodes as a way of meeting the problems of conventional batteries; Li.sub.a TiS.sub.2 where O.ltoreq.a.ltoreq.1 is known in this respect and may be made by high temperature preparative routes.
Fast ion conductors of the formula A.sub.x M.sub.y O.sub.2 where A is Li, Na or K, M is a transition metal e.g. Co or Ni, .ltoreq.x<1 and y.apprxeq.1 have been made for this purpose according to the invention. They cannot be made by high temperature routes when x is substantially less than 1 owing to stability problems. In the invention, they have been made by electrochemical extraction of A.sup.+ ions from compounds of the formula A.sub.x' M.sub.y O.sub.2 where O<x'.ltoreq.1, carried out at low temperature.

REFERENCES:
patent: 3873369 (1975-03-01), Kamenski
patent: 3970473 (1976-07-01), Roth et al.
patent: 4198476 (1980-04-01), Di Salvo, Jr. et al.

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