Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 8, Pages 2316-2320Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201812545
Keywords
double perovskite; electronic; Iron; LaNiO3; oxygen evolution reaction
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Funding
- National Natural Science Foundation of China [21531006, 21571135, 21773163]
- Ministry of Science and Technology [2016YFA0204100, 2017YFA0208200]
- Young Thousand Talented Program
- Jiangsu Province Natural Science Fund for Distinguished Young Scholars [BK20170003]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Soochow University
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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.
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