Efficient Hydrogen Oxidation Catalyzed by Strain-Engineered Nickel Nanoparticles

Weiyan Ni, Teng Wang, Pascal Alexander Schouwink, Yu Chun Chuang, Hao Ming Chen, Xile Hu

科研成果: 期刊稿件文章同行评审

100 引用 (Scopus)

摘要

The hydroxide-exchange membrane fuel cell (HEMFC) is a promising energy conversion device. However, the development of HEMFC is hampered by the lack of platinum-group-metal-free (PGM-free) electrocatalysts for the hydrogen oxidation reaction (HOR). Now, a Ni catalyst is reported that exhibits the highest mass activity in HOR for a PGM-free catalyst as well as excellent activity in the hydrogen evolution reaction (HER). This catalyst, Ni-H2-2 %, was optimized through pyrolysis of a Ni-containing metal-organic framework precursor under a mixed N2/H2 atmosphere, which yielded carbon-supported Ni nanoparticles with different levels of strains. The Ni-H2-2 % catalyst has an optimal level of strain, which leads to an optimal hydrogen binding energy and a high number of active sites.

源语言英语
页(从-至)10797-10801
页数5
期刊Angewandte Chemie - International Edition
59
27
DOI
出版状态已出版 - 26 6月 2020
已对外发布

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