Scholarlink

<p>Constructing cluster heterostructures with strongly coupled interfaces is of great importance to accelerating the catalytic reactions that involve multiple intermediates. Herein, a strongly coupled cluster heterostructure composed of platinum and molybdenum carbide (Pt@Mo<sub>2</sub>C) derived from polyoxometalate clusters is designed to achieve excellent alkaline hydrogen evolution reaction. The Pt@Mo<sub>2</sub>C cluster exhibits strong electronic interactions between Pt and Mo<sub>2</sub>C, working together to facilitate the H<sub>2</sub>O dissociation by concurrently binding intermediates (Pt–H* and Mo–OH*), thus accelerating the kinetics of the rate-determining Volmer step. The optimized Pt@Mo<sub>2</sub>C exhibits a high mass activity of 12.1&#xa0;A·mg<sub>Pt</sub><sup>−1</sup>, 19.2 times higher than that of 20% Pt/C in alkaline media. Moreover, it can be stabilized at a current density of 100&#xa0;mA·cm<sup>−2</sup> for more than 200&#xa0;h. This work demonstrated the superiority of the cluster heterostructures and co-catalytic effect towards the development of highly efficient electrocatalysts.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Polyoxometalates-derived Pt-Mo2C cluster heterostructure for co-catalytic alkaline hydrogen evolution reaction

  • 期刊论文

  • 发表日期：

    2025年3月29日

查看全文
  • Han-Qing Cai,
  • Qing-He Yang,
  • Lu-Lu Chen,
  • Rui-Li Gao,
  • Mei-Hong Liao,
  • Jia-Shen Xing,
  • Wen-Bo Zhou,
  • Ning Pu,
  • Jing Gu,
  • Yi-Chao Huang

摘要

Constructing cluster heterostructures with strongly coupled interfaces is of great importance to accelerating the catalytic reactions that involve multiple intermediates. Herein, a strongly coupled cluster heterostructure composed of platinum and molybdenum carbide (Pt@Mo2C) derived from polyoxometalate clusters is designed to achieve excellent alkaline hydrogen evolution reaction. The Pt@Mo2C cluster exhibits strong electronic interactions between Pt and Mo2C, working together to facilitate the H2O dissociation by concurrently binding intermediates (Pt–H* and Mo–OH*), thus accelerating the kinetics of the rate-determining Volmer step. The optimized Pt@Mo2C exhibits a high mass activity of 12.1 A·mgPt−1, 19.2 times higher than that of 20% Pt/C in alkaline media. Moreover, it can be stabilized at a current density of 100 mA·cm−2 for more than 200 h. This work demonstrated the superiority of the cluster heterostructures and co-catalytic effect towards the development of highly efficient electrocatalysts.

Graphical abstract