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


Autoria(s): Rascio,Daniel C.; Souza,Rodrigo F. B. De; Teixeira Neto,Érico; Suffredini,Hugo B.; Santos,Mauro C.; Calegaro,Marcelo L.
Data(s)

01/01/2010

Resumo

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.

Formato

text/html

Identificador

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010000300043

Idioma(s)

pt

Publicador

Sociedade Brasileira de Química

Fonte

Química Nova v.33 n.3 2010

Palavras-Chave #manganese oxide #oxygen reduction #battery metal recovery
Tipo

journal article