Abstract
Sugarcane bagasse carbon (SCBC) was synthesized and used to support NiCoP/CoP2 nanoparticles (NiCoP/CoP2-SCBC), and its electrocatalytic performance for the hydrogen evolution reaction (HER) was investigated and compared with that of NiCoP/CoP2 nanoparticles and NiCoP/CoP2 nanoparticles supported on carbon black (NiCoP/CoP2-C). Impressively, NiCoP/CoP2-SCBC shows the best electrocatalytic performance for HER with an over-potential of 159.5 mV at 10 mA cm-2 and a Tafel slope of 67.24 mV dec-1, along with the excellent stability. This outstanding performance is partly attributed to the abundant hydroxyl functional groups in SCBC, which can make the catalyst have better dispersion and a higher proportion of Ni2+. In addition, SCBC can lead to more defects in NiCoP/CoP2, and SCBC contains a large number of P elements, which can increase the catalytic active sites and contribute to the fast HER process to some degree.
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