期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 4, 期 4, 页码 1454-1460出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta08715e
关键词
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资金
- National Natural Science Foundation of China [61006049, 50925207, 51172100]
- Ministry of Science and Technology of China [2011DFG52970]
- Ministry of Education of China [IRT14R23]
- 111 Project [B13025]
- Jiangsu Innovation Research Team, Jiangsu Province [2011-XCL-019, 2013-479]
- Natural Science Foundation of Jiangsu [BK20131252]
The development of an effective, non-precious electrocatalyst for the hydrogen evolution reaction (HER) is highly desirable for the commercial application of hydrogen as a clean and renewable energy and remains a substantial challenge. Herein, a hierarchical nanowires array (HNA) of iron phosphide (FeP) nanowires coated with iron phosphide nanorods grown on a carbon fiber paper (CFP) was constructed which exhibited remarkable catalytic activity in the HER. The overpotential required for the current density of 20 mA cm(-2) is as small as 45 and 221 mV in acidic and basic solution, respectively, corresponding to Tafel slopes of 53 and 134 mV dec(-1). The effective catalytic activity of the CFP-FeP HNA in the HER, together with its long-term stability and nearly 100% faradaic efficiency in water electrolysis, make the CFP-FeP HNA one of the best non-noble electrocatalysts described to date. The prominent catalytic activity of CFP-FeP HNA is correlated to the large number of active sites for the HER, and the fast electron transport from the CFP to the FeP nanorods mediated by FeP nanowires.
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