Method of manufacturing highly porous electrode bodies for elect

Details Method of manufacturing highly porous electrode bodies for elect Method of manufacturing highly porous electrode bodies for elect

1979-03-13

1980-06-03

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Having earth feature

75222, 2521821, 429223, 429235, H01M 488, H01M 490

Patent

active

042062713

ABSTRACT:
A method is disclosed for the manufacture of a highly porous nickel electrode body for electrical accumulators. The new electrode body is also disclosed. By using 5-7% by volume of a nickel powder in admixture with 93-95% by volume of a pore-forming agent selected from the group consisting of ammonium bicarbonate and ammonium carbonate when pressing and sintering the electrode body a very high porosity is obtained, such as 90-95%, in spite of which the mechanical strength of the body is so high as to resist the strains of an accumulator cell. Especially preferable to impart outstanding strength to the electrode body, is a pressure of at least 100 MPa in the pressing operation.

REFERENCES:
patent: 3350200 (1967-10-01), Sandstede
patent: 3367801 (1968-02-01), Kreiselmaier
patent: 3382067 (1968-05-01), Sandstede et al.
patent: 3414438 (1968-12-01), Lindholm et al.
patent: 3441390 (1969-04-01), Backe et al.

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