Facile surface defect engineering on perovskite oxides for enhanced OER performance

被引：11

作者：

Li, Shu-Fang ^{[1
,2
]}

Zheng, Jie ^{[1
]}

Hu, Liang ^{[1
]}

Ma, Yao ^{[1
]}

Yan, Dong ^{[1
,2
]}

机构：

[1] Anhui Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Mol Solids, Minist Educ, Wuhu, Anhui, Peoples R China

[2] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China

来源：

DALTON TRANSACTIONS | 2023年 / 52卷 / 13期

基金：

中国国家自然科学基金;

关键词：

OXYGEN EVOLUTION REACTION; CATALYST; ELECTROCATALYSTS; RECONSTRUCTION; ELECTROLYSIS; METALS; CO;

D O I：

10.1039/d2dt04019k

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Perovskite oxides have been considered as potential alternative electrocatalysts in the oxygen evolution reaction (OER) field. In this work, a sequence of excellent OER perovskite catalysts was obtained by immersing Sr2CoFeO6 in a diluted HNO3 solution. Therein, the 24 h etched Sr2CoFeO6 sample (SCFO-24) exhibits the best OER activity, with an overpotential of 300 mV at 10 mA cm(-2) and a Tafel slope of 59.62 mV dec(-1). The improved OER activity of SCFO-24 can be attributed to the enhanced specific surface area derived from selective dissolution of a large amount of Sr and the high ratio of oxidative oxygen species (O2-/O-). Our work promotes this simple but efficient approach to improving the OER performance of perovskite oxides.

引用

页码：4207 / 4213

页数：7

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