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Updated: May 23, 2025
Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
V doped hollow Co3O4 nanoprisms with a modulated electronic structure for high-performance oxygen evolution reaction
Yanqiang Li1, Junyan Chen2, Haojie Dong1
1School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou, 450045, China. zhangchenxi@ncwu.edu.cn.
None:
The sluggish oxygen evolution reaction (OER) kinetics in water splitting makes it crucial to design highly active OER catalysts. Spinel oxides are considered as promising candidates due to their various compositions, valence states and electronic configurations. This paper reports a facile procedure to prepare V-doped hollow Co3O4 nanoprisms for the OER. The introduction of V can effectively modulate the electronic structure of Co3O4, therefore improving its intrinsic catalytic activity. The hollow prismatic structure ensures the exposure of catalytically active sites and rapid mass transport, thereby improving the extrinsic catalytic activity. As a result, optimized V-Co3O4-5 exhibits a small overpotential of 288 mV at 10 mA cm-2 with good durability. This work provides an innovative direction for designing efficient OER electrocatalysts via heteroatom doping.
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