Journal
RSC ADVANCES
Volume 6, Issue 115, Pages 114430-114435Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra24186g
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Funding
- National Natural Science Foundation of China [21673097]
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Exploring cheap and efficient catalysts to replace platinum-based catalysts for the hydrogen evolution reaction (HER) is essential for hydrogen production. Catalysts based on transition metal phosphides (TMPs) have emerged as greatly promising substitutes for noble-metal catalysts in the HER. Herein, we successfully fabricated iron phosphide ultrafine nanocrystals of similar to 8 nm hybridized with carbon black (FeP/C NCs) via a strategy comprising grinding, calcination and phosphidation processes. The assynthesized FeP/C NCs exhibit excellent catalytic performance for the hydrogen evolution reaction in acidic media, achieving a current density of 10 mA cm(-2) at an overpotential of 70 mV and a Tafel slope of 56 mV dec(-1). The high activity in the HER was attributed to the abundant active sites owing to the ultra-small and highly dispersive FeP NCs, as well as the good conductivity originating from carbon black. This study provides a cost-effective and scalable approach for the development of efficient HER catalysts.
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