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Updated: Mar 21, 2026

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
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Electronic structure modulation of a CoN/TiC-C nanoarray by vanadium doping for enhanced alkaline oxygen evolution.

Yi Sun1, Weiye Shi1, Zhongbao Wang1

  • 1Department of Materials Science and Engineering, Hainan University, Haikou 570228, P. R. China. chunqinghuo@hainanu.edu.cn.

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Summary

Vanadium-doped cobalt nitride/titanium carbide-carbon nanoarrays significantly improve the oxygen evolution reaction. This advancement offers high efficiency and stability for water electrolysis applications.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • The oxygen evolution reaction (OER) is a critical bottleneck in water electrolysis.
  • Developing efficient and stable electrocatalysts is essential for advancing clean energy technologies.

Purpose of the Study:

  • To investigate the effect of vanadium doping on CoN/TiC-C nanoarrays for enhanced OER performance.
  • To evaluate the stability and efficiency of the developed catalyst for water electrolysis.

Main Methods:

  • Synthesis of vanadium-doped CoN/TiC-C nanoarrays.
  • Electrochemical characterization of the catalyst's OER activity using techniques such as cyclic voltammetry and chronoamperometry.
  • Long-term stability testing under demanding operational conditions.

Main Results:

  • The vanadium-doped CoN/TiC-C nanoarrays exhibited a low overpotential of 238 mV at a current density of 100 mA cm-2.
  • The catalyst demonstrated excellent long-term stability, operating reliably for 65 hours at 100 mA cm-2.
  • The doping strategy effectively boosted the electrocatalytic activity and durability.

Conclusions:

  • Vanadium doping is a promising strategy to enhance the OER performance of CoN/TiC-C nanoarrays.
  • The developed catalyst shows significant potential for efficient and stable water electrolysis.
  • Further research into doped transition metal compounds could lead to breakthroughs in electrocatalysis.