High-Performance Hydrogen Evolution Electrocatalyst Derived from Ni3C Nanoparticles Embedded in a Porous Carbon Network

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• 作者：Hao Wang ; Yingjie Cao ; Guifu ZouQinghua Yi ; Jun Guo ; Lijun Gao
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2017
• 出版时间：January 11, 2017
• 年：2017
• 卷：9
• 期：1
• 页码：60-64
• 全文大小：424K
• ISSN：1944-8252

文摘

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.