Surface protonation and oxygen evolution activity of epitaxial La1-xSrxCoO3 thin films

被引：6

作者：

Wang, XiaoShuo ^{[1
]}

Zhou, Liang ^{[2
]}

Li, MengXin ^{[1
]}

Luo, Yi ^{[2
]}

Yang, TieYing ^{[3
]}

Wu, TianLi ^{[1
]}

Li, XiaoLong ^{[3
]}

Jin, Kui-Juan ^{[4
]}

Guo, Er-Jia ^{[4
,5
]}

Wang, LiFen ^{[4
]}

Bai, XueDong ^{[4
]}

Zhang, WeiFeng ^{[1
]}

Guo, HaiZhong ^{[2
,6
]}

机构：

[1] Henan Univ, Henan Key Lab Photovolta Mat, Sch Phys & Elect, Kaifeng 475004, Peoples R China

[2] Zhengzhou Univ, Sch Phys & Microelect, Zhengzhou 450001, Peoples R China

[3] Chinese Acad Sci, Shanghai Synchrotron Radiat Facil SSRF, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China

[4] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China

[5] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

[6] Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan 250358, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2020年 / 63卷 / 09期

基金：

中国国家自然科学基金;

关键词：

oxygen evolution reaction; La1-xSrxCoO3 thin films; lattice oxygen protonation; 82; 45; Jn; 73; 90; +f; 65; +r; REDOX REACTIONS; REDUCTION; OXIDE; PEROVSKITES;

D O I：

10.1007/s11433-019-1508-2

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

As an alternative electrode material, transition metal oxides are promising candidates due to multivalent nature and oxygen vacancies present in the structure with facilitate redox reactions. The aim of this study is to explore the intrinsic mechanism of oxygen evolution reaction (OER) using two-dimensional thin film La1-xSrxCoO3 electrode as a model. Herein, we report a planar two-dimensional model La1-xSrxCoO3 electrode grown on a Nb-SrTiO3 single-crystal substrate via pulsed laser deposition. The two-dimensional La1-xSrxCoO3 films offer different oxygen evolution activities at different pH electrolyte solutions. The mechanisms behind the variations of the oxygen evolution activity were discussed after comparing the oxygen evolution activity before and after treatments of the electrodes and measurements by various test methods. The results of this study offer a promising, low-cost electrode material for the efficient OER and a sustainable production of hydrogen fuel.

引用

页数：6

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