Chinese Journal of Applied Chemistry ›› 1989, Vol. 0 ›› Issue (6): 86-88.

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PREPARATION OF ACTIVATED MANGANESE DIOXIDE BY INDIRECT ELECTROCATALYTIC OXIDATION

Li Weishan, Jiang Lincai   

  1. Department of Chemistry, South China Normal University, Guangzhou
  • Received:1988-12-10 Revised:1989-06-20 Published:1989-12-10 Online:1989-12-10

Abstract: An indirect. electro-oxidation method for the preparation of activated manganese dioxideis proposed based on the following electrocatalytic feactions: The process is carried out at room temperature with current density of ten to seventytimes as that used in the.commercial process.The product (ECMD) had discharge capacity11.5% more than that of EMD obtained by direct electrooxidation .The amount of combinedwater and the apparent surface area were 13.4% and 83.3 m2·g-1, but 3.9% and 52.2m2·g-1for EMD sample respectively. The ECMD obtained contained 4.2% silver oxide.

Key words: Activated manganese dioxide, Electrocatalysis, electrochemical oxidation