Understanding the origin of high oxygen evolution reaction activity in the high Sr-doped perovskite

作     者：Sanzhao Song Jing Zhou Jian Sun Shiyu Zhang Xiao Lin Zhiwei Hu Jun Hu Linjuan Zhang Jian-Qiang Wang 宋三召;周靖;孙健;张诗雨;林逍;Zhiwei Hud;胡钧;张林娟;王建强

作者机构：Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China University of Chinese Academy of SciencesBeijing 100049China Dalian National Laboratory for Clean EnergyDalian 116023LiaoningChina Max Planck Institute for Chemical Physics of SolidsNöthnitzer Strasse 40Dresden 01187Germany 

基　　金：supported by the “Transformational Technologies for clean Energy and Demonstration”,Strategic Priority Research Program of the Chinese Academy of Sciences(XDA2100000) the Youth Innovation Promotion Association,Chinese Academy of Sciences(2014237) the National Natural Science Foundation of China(21876183) the Scientific Instrument Developing Project of the Chinese Academy of Sciences(YJKYYQ20180066) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2020年第41卷第4期

页      码：592-597页

摘      要：Effective electrocatalysis is crucial for enhancing the efficiency of water splitting to obtain clean ***,we report a system of interesting and high-performance Sr-doped perovskite electrocatalysts with porous structures,obtained via a facile molten salt method and applied in the oxygen evolution reaction(OER).With increasing the Sr content,the valence states of Co and Fe ions do not clearly increase,according to the Co-L2,3 and Fe-L2,3 as well as the Co-K and the Fe-K X-ray absorption spectroscopy,whereas doped holes are clearly observed in the 0-K ***-resolution transmission electron microscopy indicates the appearance of an amorphous layer after the electrochemical *** conclude that the formation of the amorphous layer at the surface,induced by Sr doping,is crucial for achieving high OER activity,and we offer insights into the self-reconstruction of the OER catalyst.

主 题 词：Molten salt Perovskite Oxygen evolution reaction Surface reconstruction Oxygen hole 

学科分类：081704[081704] 07[理学] 070304[070304] 08[工学] 0817[工学-轻工类] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/S1872-2067(19)63441-8

馆 藏 号：203878634...