High-Performance Hydrogen Evolution Electrocatalyst Derived from Ni3C Nanoparticles Embedded in a Porous Carbon Network
2017
Wang, Hao | Cao, Yingjie | Zou, Guifu | Yi, Qinghua | Guo, Jun | Gao, Lijun
In this letter, we report a facile self-foaming strategy to synthesize Ni₃C nanoparticles embedded in a porous carbon network (Ni₃C@PCN) by rationally incorporating a nickel salt precursor into the carbon source. As a novel hydrogen evolution reaction (HER) catalyst, the Ni₃C@PCN shows superior catalytic activity with an onset potential of −65 mV, an overpotential of 262 mV to achieve 50 mA cm–² current density, a Tafel slope of 63.4 mV/dec, and durability over 12 h in acidic media. The excellent performance of the novel 3D composite material along with its low-cost merits is suggestive of great potential for scalable electrocatalytic H₂ production.
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