整体
催化作用
材料科学
化学工程
钽
过电位
电解水
氢
纳米技术
电解
化学
冶金
有机化学
电化学
工程类
物理化学
电解质
电极
作者
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,Bilu Liu
标识
DOI:10.1038/s41467-021-26315-7
摘要
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.
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