期刊
ACS APPLIED NANO MATERIALS
卷 4, 期 11, 页码 12083-12090出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.1c02607
关键词
transition metal phosphide; nanosheets; water splitting; HER; OER
资金
- National Natural Science Foundation of China [21871005, 22171005]
- Program for Innovative Research Team of Anhui Education Committee
- Project for Collaborative Innovation of Anhui Higher Education Institutes [GXXT-2020-005, GXXT-2021-012, GXXT-2021-013]
Constructing a bimetallic phosphide nanocomposite structure can enhance active sites and accelerate electron transfer, benefiting electrocatalysis for overall water splitting.
Highly efficient and stable dual-function electrocatalysts for overall water splitting are of great significance to promote the application of hydrogen energy. Constructing a bimetallic phosphide nanocomposite structure can enhance active sites and accelerate electron transfer, which is beneficial to electrocatalysis. Herein, we obtained self-supporting cobalt-iron phosphide nanosheets supported on foamed nickel through two-step hydrothermal and phosphating treatment. When the CoFe-P/NF-1 electrode material reaches 100 mA cm(-2), only a HER overpotential of 180 mV is required. Moreover, the overpotential for OER is 275 mV at 200 mA cm(-2). The overall water splitting electrolyzer assembled by CoFe-P/NF-1 can reach a current of 10 mA cm(-2) at 1.57 V. The catalytic performance is better than the currently reported transition metal-based catalysts, and it exhibits excellent stability. This work provides a design idea of transition metal phosphide used in overall water splitting catalysis.
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