PtNi Alloy Coated in Porous Nitrogen-Doped Carbon as Highly Efficient Catalysts for Hydrogen Evolution Reactions |
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| Authors: | Xuyan Song Yunlu He Bo Wang Sanwen Peng Lin Tong Qiang Liu Jun Yu Haolin Tang |
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| Institution: | 1.China Tobacco Hubei Industrial Co., Ltd., Wuhan 430051, China; (X.S.); (Y.H.); (B.W.); (L.T.); (Q.L.);2.China Tobacco Hubei Industrial Cigarette Materials Co., Ltd., Wuhan 430051, China;3.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China |
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| Abstract: | The development of low platinum loading hydrogen evolution reaction (HER) catalysts with high activity and stability is of great significance to the practical application of hydrogen energy. This paper reports a simple method to synthesize a highly efficient HER catalyst through coating a highly dispersed PtNi alloy on porous nitrogen-doped carbon (MNC) derived from the zeolite imidazolate skeleton. The catalyst is characterized and analyzed by physical characterization methods, such as XRD, SEM, TEM, BET, XPS, and LSV, EIS, it, v-t, etc. The optimized sample exhibits an overpotential of only 26 mV at a current density of 10 mA cm−2, outperforming commercial 20 wt% Pt/C (33 mV). The synthesized catalyst shows a relatively fast HER kinetics as evidenced by the small Tafel slope of 21.5 mV dec−1 due to the small charge transfer resistance, the alloying effect between Pt and Ni, and the interaction between PtNi alloy and carrier. |
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| Keywords: | hydrogen evolution reaction porous carbon PtNi alloy |
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