Lithium ion-conductive solid electrolyte containing lithium tita

Details Lithium ion-conductive solid electrolyte containing lithium tita Lithium ion-conductive solid electrolyte containing lithium tita

1989-06-28

1991-01-15

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

H01M 618

Patent

active

049853171

ABSTRACT:
A lithium ion-conductive solid electrolyte consisting of a compound represented by the chemical formula, Li.sub.1+x M.sub.x Ti.sub.2-x (PO.sub.4).sub.3 (M is at least one element selected from the group consisting of Fe, Al and rare earth elements and x is a number of 0.1 to 1.9), a compound represented by the chemical formula, Li.sub.1+y Ti.sub.2 Si.sub.y P.sub.3-y O.sub.12 (Y is a number of 0.1 to 2.9), or a compound obtained by mixing a compound represented by the chemical formula, LiTi.sub.2 (PO.sub.4).sub.3 with a lithium compound other than LiTi.sub.2 (PO.sub.4).sub.3 and sintering the resulting mixture. Said lithium ion-conductive solid electrolyte can be produced by subjecting to solid phase reaction a mixture of a titanium oxide, a lithium salt, a phosphoric salt and M.sub.2 O.sub.3 (M is at least one element selected from the group consisting of Fe, Al and rare earth elements) or a silicon oxide or a mixture of LiTi.sub.2 (PO.sub.4).sub.3 and other lithium compound. Said lithium ion-conductive electrolyte can be used in the form of a lithium ion-conductive electrolyte sheet to prepare a structure suitable for solid electrochemical elements.

REFERENCES:
patent: 4042482 (1977-08-01), Shannon et al.
patent: 4166159 (1979-08-01), Pober
patent: 4390460 (1983-06-01), Miyauchi et al.
patent: 4512905 (1985-04-01), Clearfield et al.
patent: 4810599 (1989-03-01), Kondo et al.
patent: 4828945 (1989-05-01), Nagata et al.

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