Journal
APPLIED SURFACE SCIENCE
Volume 548, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2021.149280
Keywords
Straw-like nanoneedle arrays; Non-noble-metal electrocatalysts; Hydrogen evolution reaction; Nickel foam; Electrocatalysis
Categories
Funding
- National Natural Science Foundation of China [21805245]
- Zhejiang Public Welfare Technology Application Research Project [LGG19B050001]
- Natural Science Foundation of Zhejiang Province [LY18B050005]
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The study successfully prepared straw-like phosphorus-doped Co2MnO4 nanoneedle arrays supported on nickel foam (P-Co2MnO4/NF), which exhibited excellent hydrogen evolution reaction (HER) activities in alkaline, acidic, and neutral media. The catalyst shows promise for electrochemical energy technologies with its cost-effectiveness, high efficiency, and wide pH adaptability.
Developing high-performance and cut-price non-noble-metal electrocatalysts for hydrogen evolution reaction (HER) is desirable yet challenging. Herein, straw-like phosphorus-doped Co2MnO4 nanoneedle arrays supported on nickel foam (P-Co2MnO4/NF) were prepared by successive hydrothermal treatment, oxidation and P doping for high-efficiency HER. Benefiting from the unique needle-like arrays and compositions advantages, P-Co2MnO4/NF exhibited excellent HER activities with the overpotentials of 33, 43 and 102 mV to afford a current density of 10 mA cm(-2) in alkaline, acidic and neutral media, respectively, coupled with the long-term electrochemical stability. This work affords an effective avenue for preparation of cost-effectiveness, high-efficiency and wide-pH HER catalysts for electrochemical energy technologies.
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