Use of manganese oxides recovered from spent batteries in electrocatalysis of oxygen reduction reaction in alkaline medium

Author(s)

Daniel C. Rascio ^[1] ; Rodrigo F. B. De Souza ^[2] ; Érico Teixeira Neto ^[3] ; Hugo B. Suffredini ^[4] ; Mauro C. Santos ^[5] ; Marcelo L. Calegaro ^[6]

Affiliation

^[1] Universidade Federal do ABC. Centro de Ciências Naturais e Humanas - Brasil

^[2] Universidade Federal do ABC. Centro de Ciências Naturais e Humanas - Brasil

^[3] Universidade Federal do ABC. Centro de Ciências Naturais e Humanas - Brasil

^[4] Universidade Federal do ABC. Centro de Ciências Naturais e Humanas - Brasil

^[5] Universidade Federal do ABC. Centro de Ciências Naturais e Humanas - Brasil

^[6] Universidade de São Paulo. Instituto de Química de São Carlos - Brasil

• Document type: Journal article
• Source: Química Nova; v. 33, n. 3, p. 730-733, 2010-00-00.

Abstract

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. (AU)

• FAPESP's process: 07/05155-1 - Preparation and use of heterogeneous catalysts by the sol-gel method for electrocatalysis and biodiesel synthesis
• Grantee: Hugo Barbosa Suffredini
• Support Opportunities: Research Grants - Young Investigators Grants