Co-doping Strategy for Developing Perovskite Oxides as Highly Efficient Electrocatalysts for Oxygen Evolution Reaction

Xiaomin Xu; Chao Su; Wei Zhou; Yinlong Zhu; Yubo Chen; Zongping Shao

doi:10.1002/advs.201500187

Co-doping Strategy for Developing Perovskite Oxides as Highly Efficient Electrocatalysts for Oxygen Evolution Reaction

Adv Sci (Weinh). 2015 Sep 27;3(2):1500187. doi: 10.1002/advs.201500187. eCollection 2016 Feb.

Authors

Xiaomin Xu¹, Chao Su², Wei Zhou¹, Yinlong Zhu¹, Yubo Chen¹, Zongping Shao³

Affiliations

¹ State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemistry and Chemical Engineering Nanjing Tech University No. 5 Xin Mofan Road Nanjing 210009 P. R. China.
² Department of Chemical Engineering Curtin University Perth Western Australia 6845 Australia.
³ Department of Chemical Engineering Curtin University Perth Western Australia 6845 Australia; State Key Laboratory of Materials-Oriented Chemical Engineering College of Energy Nanjing Tech University No. 5 Xin Mofan Road Nanjing 210009 P. R. China.

Abstract

A synergistic co-doping strategy is proposed to identify a series of BaCo_0.9-x Fe _x Sn_0.1O_3-δ perovskites with tunable electrocatalytic activity for the oxygen evolution reaction (OER). Simply through tailoring the relative concentrations of less OER-active tin and iron dopants, a cubic perovskite structure (BaCo_0.7Fe_0.2Sn_0.1O_3-δ) is stabilized, showing intrinsic OER activity >1 order of magnitude larger than IrO₂ and a Tafel slope of 69 mV dec^-1.

Keywords: doping; electrocatalysis; oxygen evolution reaction; perovskite; water splitting.