Chemistry: electrical current producing apparatus – product – and – Fluid active material or two-fluid electrolyte combination...
Patent
1989-08-01
1990-10-23
Walton, Donald L.
Chemistry: electrical current producing apparatus, product, and
Fluid active material or two-fluid electrolyte combination...
429 44, H01M 492, H01M 1200
Patent
active
049651455
ABSTRACT:
The conventional sintered, thin hydrogen negative electrode of a nickel-hydrogen storage cell or the like is replaced by a thicker porous electrode having a greater volume to receive water produced at the negative electrode during discharge of the cell. As a result, the dilution of the electrolyte within the negative electrode is less as compared with the thinner electrode, so that the freezing point depression of the electrolyte within the negative electrode is maintained. Freezing of the electrolyte and reduced performance of the cell are thereby avoided. To maintain the low weight of the electrode and reduce its cost even though its thickness is increased, platinum particles are replaced by conductive particles upon which platinum has been deposited.
REFERENCES:
patent: 4115630 (1978-09-01), Ommering et al.
patent: 4327158 (1982-04-01), Holleck
patent: 4585711 (1986-04-01), Vaidyanathan
patent: 4683178 (1987-07-01), Stadnick et al.
Rogers Howard H.
Stadnick Steven J.
Denson-Low Wanda
Hughes Aircraft Company
Mitchell Steven M.
Walton Donald L.
Westerlund Robert A.
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