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<p>Developing a highly efficient and earth-abundant electrocatalyst was crucial for enhancing the alkaline hydrogen evolution reaction (HER) and accelerating the sluggish hydrolysis kinetics. In this study, a novel self-supporting Co/MoC/Mo<sub>2</sub>C/SCG@SA electrocatalyst derived from biomass carbon was successfully synthesized via a simple hydrothermal and calcination process. The Co/MoC/Mo<sub>2</sub>C composite exhibited outstanding electrocatalytic performance, achieving a current density of 10&#xa0;mA&#xa0;cm<sup>−2</sup> at a low overpotential of 70&#xa0;mV for HER. The synergistic effect between the MoC/Mo<sub>2</sub>C and MoC/Co heterojunctions played a crucial role in facilitating charge transfer and promoting the reaction. This work provided a feasible strategy for the rational design of self-supporting biomass-based carbon electrodes combined with transition metal materials.</p> Graphical abstract <p></p>

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Self-supporting Co/MoC/Mo2C composite electrocatalyst derived from biomass carbon for efficient hydrogen evolution

  • 期刊论文

  • 发表日期：

    2025年4月17日

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  • Minfeng Meng,
  • Xianlong Ge,
  • Shaohua Hu,
  • Yankai Song,
  • Liang Zhang,
  • Jingtao Su,
  • Yingying Gu

摘要

Developing a highly efficient and earth-abundant electrocatalyst was crucial for enhancing the alkaline hydrogen evolution reaction (HER) and accelerating the sluggish hydrolysis kinetics. In this study, a novel self-supporting Co/MoC/Mo2C/SCG@SA electrocatalyst derived from biomass carbon was successfully synthesized via a simple hydrothermal and calcination process. The Co/MoC/Mo2C composite exhibited outstanding electrocatalytic performance, achieving a current density of 10 mA cm−2 at a low overpotential of 70 mV for HER. The synergistic effect between the MoC/Mo2C and MoC/Co heterojunctions played a crucial role in facilitating charge transfer and promoting the reaction. This work provided a feasible strategy for the rational design of self-supporting biomass-based carbon electrodes combined with transition metal materials.

Graphical abstract