Electrochemical cell comprising stable hydride-forming material

Details Electrochemical cell comprising stable hydride-forming material Electrochemical cell comprising stable hydride-forming material

1984-03-09

1984-12-11

LeFevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 40, 429218, H01M 400

Patent

active

044878176

ABSTRACT:
An electrochemical cell having a negative electrode comprising a compound derived from LaNi.sub.5, in which La is optionally substituted by a plateau pressure-increasing element and in which Ni is substituted entirely or partly by a plateau pressure-reducing element, for example, Co and/or Cu, with the object of considerably reducing volume steps and hence crack formation of the intermetallic compound during charging and discharging.
Moreover, the corrosion of the intermetallic compound is counteracted by adding small quantities of Al, Cr and/or Si, which metals enhance the formation of a protecting oxide layer.

REFERENCES:
patent: 3405008 (1968-10-01), Dilworth et al.
patent: 3850694 (1974-11-01), Dunlop et al.
patent: 3980501 (1976-09-01), Feder et al.
patent: 4112199 (1978-09-01), Dunlop et al.
patent: 4214043 (1980-07-01), Deutekom
patent: 4312928 (1982-01-01), Deutekom

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