Engineering the electronic state of a perovskite electrocatalyst for synergistically enhanced oxygen evolution reaction

Yuqiao Guo; Yun Tong; Pengzuo Chen; Kun Xu; Jiyin Zhao; Yue Lin; Wangsheng Chu; Zhenmeng Peng; Changzheng Wu; Yi Xie

doi:10.1002/adma.201502024

Engineering the electronic state of a perovskite electrocatalyst for synergistically enhanced oxygen evolution reaction

Adv Mater. 2015 Oct 21;27(39):5989-94. doi: 10.1002/adma.201502024. Epub 2015 Aug 28.

Authors

Yuqiao Guo¹, Yun Tong¹, Pengzuo Chen¹, Kun Xu¹, Jiyin Zhao¹, Yue Lin¹, Wangsheng Chu², Zhenmeng Peng³, Changzheng Wu¹, Yi Xie¹

Affiliations

¹ Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Centre of Chemistry for Energy Materials), Hefei Science Center (CAS) and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China.
² National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, P. R. China.
³ Department of Chemical and Biomolecular Engineering, University of Akron, Akron, OH, 44325, USA.

PMID: 26316037
DOI: 10.1002/adma.201502024

Abstract

A surface hydrogen effect to modulate the pure electronic-state transition in perovskite Ca0.9 Yb0.1 MnO3 synergistically generates a more suitable eg electron filling status and better conductivity. This achieves 100 times higher catalytic activity compared to that of a pristine sample.

Keywords: calcium-manganese oxides; eg electron filling; electronic state transitions; oxygen evolution reactions; spin behaviors.