期刊
NANO ENERGY
卷 56, 期 -, 页码 225-233出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2018.11.051
关键词
Electrocatalysis; Hydrogen evolution reaction; Metal phosphide; Hollow structure; Nanotube
类别
资金
- National Key R&D Project from Minister of Science and Technology of China [2016YFA0202702]
- Shenzhen Research Plan [JCYJ20160229195455154]
- Guangdong Department of Science and Technology [2017A050501052]
- Guangdong Province Industrial-Academic-Research Cooperation Program [2014 B090901017]
The development of high-performance and cost-effective electrocatalysts is of great significance for hydrogen production by water splitting but remains challenge. Herein, a metal organic frameworks (MOFs) templating approach is proposed to synthesize Co incorporating FeP nanotubes (Co-Fe-P nanotubes) for efficient for hydrogen evolution reaction (HER). The MOFs-derived tubular structure with in situ Co substitution lead to abundant catalytic sites, fast mass and charge transport pathways, and desirable electronic configuration. These beneficial effects enable Co-Fe-P nanotubes efficient HER catalytic activity in a wide pH range, achieving small overpotentials of 86, 138, and 66 mV at a current density of 10 mA cm(-2) in 1 M KOH, 1 M phosphate buffer solution (PBS), and 0.5 M H2SO4, respectively. The catalytic activity of Co-Fe-P nanotubes outperforms most of the reported FeP-based electrocatalysts. Density functional theory calculations further reveal that Co substitution results in increased density of states near Fermi level, boosting the intrinsic electrocatalytic activity of Co-Fe-P nanotubes. This work affords a feasible way to the synthesis of cheap and efficient FeP-based electrocatalysts for HER.
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