Double Perovskite LaFexNi1-xO3 Nanorods Enable Efficient Oxygen Evolution Electrocatalysis

被引：208

作者：

Wang, Huaping ^{[1
,2
]}

Wang, Juan ^{[1
]}

Pi, Yecan ^{[1
]}

Shao, Qi ^{[1
]}

Tan, Yueming ^{[2
]}

Huang, Xiaoqing ^{[1
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, 199 Renai Rd, Suzhou 215123, Jiangsu, Peoples R China

[2] Hunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Minist Educ China, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2019年 / 58卷 / 08期

基金：

中国国家自然科学基金;

关键词：

double perovskite; electronic; Iron; LaNiO3; oxygen evolution reaction; WATER OXIDATION; PERFORMANCE; HYDROGEN; NANOSHEETS; CATALYSIS; ALKALINE;

D O I：

10.1002/anie.201812545

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Perovskite-based electrocatalysts are one of the most promising materials for oxygen evolution reaction (OER), but their activity and durability are still far from desirable. Herein, we demonstrate that the double perovskite LaFexNi1-xO3 (LFNO) nanorods (NRs) can be adopted as highly active and stable OER electrocatalysts. The optimized LFNO-II NRs with Ni/Fe ratio of 8:2 achieve a low overpotential of 302 mV at 10 mA cm(-2) and a small Tafel slope of 50 mV dec(-1), outperforming those of the commercial Ir/C. The LFNO-II NRs also show high OER stability with slight current decrease after 20 h. The enhanced activity is explained by the improved surface area, tailored electronic structure as well as strong hybridization between O and Ni.

引用

页码：2316 / 2320

页数：5

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