Bi-Functional Water/Oxygen Electrocatalyst Based on PdO-RuO2 Composites

作者：Sunarso Jaka^*; Glushenkov Alexey M; Torriero Angel A J; Howlett Patrick C; Chen Ying; MacFarlane Douglas R; Forsyth Maria

来源：Journal of the Electrochemical Society, 2013, 160(1): H74-H79.

DOI：10.1149/2.019302jes

One of the main challenges toward reversible metal-air batteries and regenerative fuel cells is the bi-functional water/oxygen electrocatalyst component. At present, no single metal oxide can catalyze both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) with low overpotential between them. Here, the composite concept is employed to address this problem in conjunction with well-defined quantification of the onset of both reactions utilizing thin-film rotating disk electrode technique. This work is built up on the idea of utilizing a good ORR catalyst (e. g. PdO) and a good OER catalyst (e. g. RuO2) in alkaline solution. Four electron mechanism and two electron mechanism are implied for the ORR catalyzed using PdO containing compounds and RuO2, respectively.

• 出版日期2013
• 单位迪肯大学