Reaproveitamento de óxidos de manganês de pilhas descartadas para eletrocatálise da reação de redução de oxigênio em meio básico

Química Nova

Daniel C. Rascio²  Rodrigo F. B. De Souza²  Érico Teixeira Neto²  Hugo B. Suffredini²  Mauro C. Santos²  Marcelo L. Calegaro¹ 

[1] ,Universidade Federal do ABC Centro de Ciências Naturais e Humanas Santo André SP ,Brasil

关键词: manganese oxide;    oxygen reduction;    battery metal recovery;   

DOI  :  10.1590/S0100-40422010000300043

来源: SciELO

【 摘 要 】

The oxygen reduction reaction was studied in alkaline media using manganese oxides obtained from spent batteries as electrocatalysts. Three processes were used to recover manganese oxides from spent batteries. The particles obtained were in the range from 8 to 11 nm. The electrochemical experiments indicated a good electrocatalytic activity toward oxygen reduction using the different samples and showing approximately a direct transference of 4 electrons during the process. Even though all the processes were efficient, the best result was observed for the prepared sample using reactants of low cost.

【 授权许可】

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