Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1976-04-05
1977-02-22
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429193, 429194, 429199, 429218, 429229, H01M 3502
Patent
active
040090523
ABSTRACT:
A battery is provided in which the anode contains as the anode-active material a metal selected from the group consisting of Group Ia metals, Group Ib metals, Group IIa metals, Group IIb metals, Group IIIa metals and Group IVa metals (lithium is preferred), the cathode contains as the cathode-active material a chalcogenide of the formula MZ.sub.x wherein M is an element selected from the group consisting of titanium, zirconium, hafnium, niobium, tantalum and vanadium (titanium is preferred); Z is an element selected from the group consisting of sulfur, selenium and tellurium, and x is a numerical value between about 1.8 and about 2.1, and the electrolyte is one which does not chemically react with the anode or the cathode and which will permit the migration of ions from said anode-active material to intercalate the cathode-active material. A highly useful battery may be prepared utilizing lithium as the anode-active material, titanium disulfide as the cathode-active material and lithium perchlorate dissolved in tetrahydrofuran (70%) plus dimethoxyethane (30%) solvent as the electrolyte.
Alternatively, the battery may be constructed in the discharged state of a cathode containing as the cathode-active material an intercalated chalcogenide in which the intercalating species is derived from the same materials previously mentioned as being useful for the anode-active material and the chalcogenide would be the same as that previously described. In this alternate type of battery, the anode may merely be a substrate (e.g., a metal grid) capable of receiving the intercalating species deposited thereon.
REFERENCES:
patent: 3681144 (1972-08-01), Dey et al.
patent: 3791867 (1974-02-01), Broadhead et al.
patent: 3864167 (1975-02-01), Broadhead et al.
Ciomek M. A.
Exxon Research and Engineering Company
Matalon Jack
Skapars Anthony
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