Coating processes – Electrical product produced – Metallic compound coating
Patent
1976-06-01
1978-10-31
Smith, John D.
Coating processes
Electrical product produced
Metallic compound coating
296235, 427 58, 427372R, 429221, 429236, 429241, H01M 404, H01M 426
Patent
active
041235681
ABSTRACT:
A method for manufacturing an electrode for an alkaline accumulator by applying an active mass to a metallic grid such as iron which includes preparation of an active mass comprising a black iron ore concentrate, iron oxide, synthetic fibre, ferrous technical iron, an aqueous solution of nickel sulfate, a surface active agent, and an aqueous solution of polyvinyl alcohol, said polyvinyl alcohol being heated prior to addition with a dehydrating agent such as a concentrated sulfuric acid in a ratio of 1:5 of sulfuric acid to polyvinyl alcohol. The resulting active mass is rubbed into a grid made of a steel band, and dried for 15 to 20 minutes at a temperature of from 110.degree. to 180.degree. C until the dehydration of polyvinyl alcohol corresponds to 25-30 mol.% of double bonds.
REFERENCES:
patent: 3450571 (1969-06-01), Zenczak
patent: 3725129 (1973-04-01), Ruzzo
patent: 3905829 (1975-09-01), Yehuda
patent: 3918989 (1975-11-01), Gillman
patent: 3947292 (1976-03-01), Jackovitz
patent: 4021911 (1977-05-01), Kononenko et al.
Kononenko Viktor Evmenievich
Ozerova Alla Ivanovna
Tamazina Valentina Nikolaevna
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