High-flowability aqueous nickel hydroxide or hydrated nickel oxi

Details High-flowability aqueous nickel hydroxide or hydrated nickel oxi High-flowability aqueous nickel hydroxide or hydrated nickel oxi

1991-04-04

1992-03-10

Nelson, Peter A.

Compositions

Compositions containing a single chemical reactant or plural...

2523131, 429223, H01M 488

Patent

active

050947745

ABSTRACT:
An aqueous nickel hydroxide paste for the mechanical impregnation of fibrous-structure electrode frameworks. The polydisperse solid total system of solid particles in the nickel hydroxide or hydrated nickel oxide paste has a particular particle-size distribution (distribution ogive) which may vary within narrow limits and is preferably evaluated in a RRSB particle-size grid according to P. Rosin, E. Rammler, K. Sperling and I. G. Bennett. The resulting paste can be filled into differing frameworks in one operation, as a moist active mass (paste), to a degree of filling of 94% to 100%, without constituents of the paste (particularly at the lower edge during handling in the vertical position) draining off or escaping again. Preferably, the choice of the particle-size distribution of the nickel hydroxide powder used is so fine that the technical comminution work in the production of the paste is very small and that the production times for the paste can consequently be substantially reduced.

REFERENCES:
patent: 4064332 (1977-12-01), Elfwing et al.
patent: 4481128 (1984-11-01), Jackovitz et al.
patent: 4940553 (1990-07-01), von Benda et al.
Sonderdruck aus der Zeitschrift, Chemie-Ingenieur-Technik.
Grundlagen von Elektrodenreaktionen--Oct. 1983.
Entwicklungsarbeiten an Nickel/Wasserstoff-Zeller fur die Elektrotraktion.
Alkalische Batterien fur Elektrostrassenfahrzeuge--technische und wirtschafthche Aspekte.
Fur die Berufspraks--35.folge--Chemie Ingenieur Technik.

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