首页|Facet engineering of NiCo2S4 electrocatalysts for enhanced hydrogen evolution reaction
Facet engineering of NiCo2S4 electrocatalysts for enhanced hydrogen evolution reaction
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Crystal facet engineering is considered to be a powerful method to maximize the inherent catalytic properties of electrocatalysts.In this research,polyvinylpyrrolidone(PVP)served as a surfactant to realize the controllable synthesis of sub-microspheres NiCo2S4 with a highly exposed(400)crystal facet.The sub-microspheres NiCo2S4(P-0.2)shows excellent catalytic activities as a cathode toward hydrogen evolution reaction(HER)with a lower overpotential of 235 mV at 10 mA·cm~(-2)in alkaline electrolyte.Moreover,the sub-microspheres NiCo2S4 presents satisfactory durability in the alkaline solution for 24 h.Such remarkable HER performance of electrocatalyst is benefited from the unique sub-microspheres structure,which could highly expose specific crystal facets to provide abundant active sites,and thus enhance the mass/electron transfer efficiency.Furthermore,the increased exposure of(400)facet of NiCo2S4 crystal will offer more S2"during HER,it can effectively stabilize the reaction intermediates.
NSTL
