Solid electrolyte composition and cell

H - Electricity – 01 – M

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319/35, 319/68

H01M 6/18 (2006.01) H01M 10/36 (2006.01)

Patent

CA 1069973

ABSTRACT OF THE DISCLOSURE Novel solid electrolyte compositions and novel electrochemical cells utilizing the novel electrolyte compositions are disclosed. The cells utilize: (a) an anode which contains as the anode-active material an alkali metal; (b) a cathode which contains as the cathode-active material a chalcogenide of the empirical formula M'Ap wherein M' is one or more metals selected from the group consisting of titanium, zirconium, hafnium, niobium, tantalum and vanadium, A is one or more chalcogens selected from the group consisting of oxygen, sulfur, selenium and tellurium, and p is a numerical value between about 1.8 and about 3.2; and (c) a novel solid electrolyte composition which comprises one or more lithium-halogen-aluminum sulfate compounds of the formula LiI? x(Al2(SO4)3?nH2) wherein x is a numerical value representing the number of moles of Al2(SO4)3?nH2O per mole of LiI, and wherein n is a numerical value representing the number of moles of H2O per mole of Al2(SO4)3, i.e. the extent of hydration of the compound.

283409

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