A Ta-TaS2 monolith catalyst with robust and metallic interface for superior hydrogen evolution

Qiangmin Yu, Zhiyuan Zhang, Siyao Qiu, Yuting Luo, Zhibo Liu, Fengning Yang, Heming Liu, Shiyu Ge, Xiaolong Zou, Baofu Ding, Wencai Ren, Hui-Ming Cheng, Chenghua Sun () and Bilu Liu ()
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Qiangmin Yu: Tsinghua University
Zhiyuan Zhang: Tsinghua University
Siyao Qiu: Dongguan University of Technology
Yuting Luo: Tsinghua University
Zhibo Liu: Institute of Metal Research, Chinese Academy of Sciences
Fengning Yang: Tsinghua University
Heming Liu: Tsinghua University
Shiyu Ge: Tsinghua University
Xiaolong Zou: Tsinghua University
Baofu Ding: Tsinghua University
Wencai Ren: Institute of Metal Research, Chinese Academy of Sciences
Hui-Ming Cheng: Tsinghua University
Chenghua Sun: Dongguan University of Technology
Bilu Liu: Tsinghua University

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract The use of highly-active and robust catalysts is crucial for producing green hydrogen by water electrolysis as we strive to achieve global carbon neutrality. Noble metals like platinum are currently used catalysts in industry for the hydrogen evolution, but suffer from scarcity, high price and unsatisfied performance and stability at large current density, restrict their large-scale implementations. Here we report the synthesis of a type of monolith catalyst consisting of a metal disulfide (e.g., tantalum sulfides) vertically bonded to a conductive substrate of the same metal tantalum by strong covalent bonds. These features give the monolith catalyst a mechanically-robust and electrically near-zero-resistance interface, leading to an excellent hydrogen evolution performance including rapid charge transfer and excellent durability, together with a low overpotential of 398 mV to achieve a current density of 2,000 mA cm−2 as required by industry. The monolith catalyst has a negligible performance decay after 200 h operation at large current densities. In light of its robust and metallic interface and the various choices of metals giving the same structure, such monolith materials would have broad uses besides catalysis.

Date: 2021
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DOI: 10.1038/s41467-021-26315-7

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