Reaproveitamento de óxidos de manganês de pilhas descartadas para eletrocatálise da reação de redução de oxigênio em meio básico Use of manganese oxides recovered from spent batteries in electrocatalysis of oxygen reduction reaction in alkaline medium
| Autor: | Daniel C. Rascio, Rodrigo F. B. De Souza, Érico Teixeira Neto, Hugo B. Suffredini, Mauro C. Santos, Marcelo L. Calegaro |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 33, Iss 3, Pp 730-733 (2010) |
| ISSN: | 1678-7064 0100-4042 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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