Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1989-07-19
1991-11-12
Walton, Donald L.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429222, 2521821, 246235, H01M 444, H01M 426
Patent
active
050647350
ABSTRACT:
A cadmium electrode for use in rechargeable alkaline cells is disclosed featuring use of dispersed polyamide having specific properties. The polyamide serves as a binder as well as an anti-agglomerant to retard cadmium agglomeration during use of the electrode. The use of elemental silver additive dispersed throughout the electrode is also disclosed, as is the use of zirconium material as an elecrolyte wicking and anti-compressive agent. A process for making any of the foregoing electrodes is disclosed featuring the step of forming a paste by mixing together the polymeric resin, active cadmium material and a non-aqueous solvent, applying the paste to a conductive substrate and removing the solvent. Alternatively, known prefabricated cadmium electrodes, such as Teflon-bonded or sintered types, are post-treated through dipping or the like in a solution of the aforementioned polyamide.
REFERENCES:
patent: 2870234 (1959-01-01), Moulton
patent: 3751300 (1973-08-01), Yamamoto et al.
patent: 4765799 (1988-08-01), Waldrop
Gross, Causes of Failure in Sealed Nickel-Cadmium Batteries, Energy Conversion, vol. 11, pp. 39-45, Pergamon Press, 1971, Great Britain.
Puglisi Vincent J.
Rampel Guy G.
Castleman, Jr. C. H.
Gates Energy Products, Inc.
Isaac J. L.
Oberg H. W.
Walton Donald L.
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