Related Experiment Video
Updated: May 23, 2025
11:10
Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
11.8K
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.
Dalton Transactions (Cambridge, England : 2003)
|May 22, 2025
Summary
Vanadium-doped hollow cobalt oxide (Co3O4) nanoprisms were synthesized to boost oxygen evolution reaction (OER) catalysis. This novel catalyst design enhances water splitting efficiency and durability.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- The oxygen evolution reaction (OER) is kinetically limited in water splitting, necessitating advanced catalysts.
- Spinel oxides offer tunable properties for OER catalysis due to diverse compositions and electronic structures.
Purpose of the Study:
- To develop highly active and durable electrocatalysts for the oxygen evolution reaction (OER).
- To investigate the effect of vanadium (V) doping on the OER performance of hollow Co3O4 nanoprisms.
Main Methods:
- Facile synthesis of V-doped hollow Co3O4 nanoprisms.
- Electrochemical characterization of catalytic activity and durability for OER.
Main Results:
- V-doping effectively modulated the electronic structure of Co3O4, enhancing intrinsic catalytic activity.
- The hollow prismatic structure facilitated active site exposure and mass transport, improving extrinsic activity.
- Optimized V-Co3O4-5 demonstrated a low overpotential of 288 mV at 10 mA cm-2 with excellent durability.
Conclusions:
- Heteroatom doping, specifically with vanadium, is an effective strategy for designing efficient OER electrocatalysts.
- Hollow nanostructures combined with doping offer synergistic improvements in catalytic performance for water splitting.
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