Process for producing improved electrolytic manganese dioxide

Details Process for producing improved electrolytic manganese dioxide Process for producing improved electrolytic manganese dioxide

1988-06-23

1990-08-14

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204130, 429224, C25C 100

Patent

active

049484842

ABSTRACT:
There is provided a process for improving the alkaline discharge capacity of electrolytic manganese dioxide. The process comprises forming a mixture of electrolytic manganese dioxide, a carbon material and a strong base electrolyte and subjecting the mixture to electrochemical oxidation, in the presence of additional strong base electrolyte, while maintaining the mixture in an anodic condition. The process further comprises leaching the oxidized mixture to effect removal of any water soluble manganese salt byproducts formed during the electrochemical oxidation process.

REFERENCES:
patent: 3893870 (1975-07-01), Kozawa
patent: 4091178 (1978-05-01), Kordesch
patent: 4306005 (1981-12-01), Ruben
patent: 4384029 (1983-05-01), Kordesch
patent: 4451543 (1984-05-01), Dziectuch et al.
patent: 4758484 (1988-07-01), Furukawa et al.
The 3rd Battery Material Symposium, Honolulu, 1987, Extended Abs. No. 1.6, pp. 21-22 (J. Koshiba and Y. Karogi).
Chemical Engineers' Handbook, J. Perry, 4ed., pp. 21-37 et seq (1963).

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