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Citation: Li Weishan, Jiang Lincai. PREPARATION OF ACTIVATED MANGANESE DIOXIDE BY INDIRECT ELECTROCATALYTIC OXIDATION[J]. Chinese Journal of Applied Chemistry, ;1989, 6(6): 86-88. shu

PREPARATION OF ACTIVATED MANGANESE DIOXIDE BY INDIRECT ELECTROCATALYTIC OXIDATION

Li Weishan ,
Jiang Lincai

1.
Department of Chemistry, South China Normal University, Guangzhou

Received Date: 10 December 1988
Available Online: 20 June 1989

An indirect electro-oxidation-method for the preparation of activated manganese dioxide is proposed based on the following electrocatalytic reactions:Ag⁺→Ag²⁺+e2Ag²⁺+Mn²⁺+2H₂0→MnO₂+2Ag⁺+4H⁺ The process carried out at room temperature with current density of ten to seventy times as that used in the commercial process, The product (ECMD) had discharge capacity 11.5% more than that of EMD obtained by direct electrooxidation,The amount of combined water and the apparent surface area were 13.4% and 83.3 m²·g^-1, but 3.9% and 52.2 m²·g^-1 for EMD sample respectively, The ECMD obtained contained 4.2% silver oxide.
- Activated manganese dioxide,
- Electrocatalysis,
- electrochemical oxidation
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