3D hierarchical NiS2/MoS2 nanostructures on CFP with enhanced electrocatalytic activity for hydrogen evolution reaction
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第4期
论文作者：Jieqiong Wang Zheng Liu Changhong Zhan Kexi Zhang Xiaoyong Lai Jinchun Tu Yang Cao
文章页码：155 - 160
摘 要：The electrocatalytic activity for hydrogen evolution reaction（HER） is strongly correlated with active edge sites and resulting efficient charge transport capability. Here, we presented a facile two-step method to synthesize 3 D hierarchical NiS2/MoS2 composite nanostructures on a carbon fiber paper（CFP） skeleton.The nanostructures distributed on CFP uniformly and composed of 2 D nanosheets, which would provide plenty of active edge sites and increase the HER activity. Electrochemical measurement suggests that the prepared NiS2/MoS2 exhibit great HER activity including a low overpotential of 102 m V, a small Tafel slope of 67 m V/dec, and a high double-layer capacity of 53.7 m F/cm2 in 1 M KOH aqueous solution. In addition,the HER activity is almost unchanged after galvanostatic technique with applied current densities of10 m A/cm2 for 20 h.
Jieqiong Wang1，Zheng Liu1，Changhong Zhan1，Kexi Zhang1，Xiaoyong Lai2，Jinchun Tu1，Yang Cao1,3
1. State Key Laboratory of Marine Resource Utilization in South China Sea, College of Materials and Chemical Engineering, Hainan University2. Laboratory Cultivation Base of Natural Gas Conversion, School of Chemistry and Chemical Engineering, Ningxia University3. Qiongtai Normal University
摘 要：The electrocatalytic activity for hydrogen evolution reaction（HER） is strongly correlated with active edge sites and resulting efficient charge transport capability. Here, we presented a facile two-step method to synthesize 3 D hierarchical NiS2/MoS2 composite nanostructures on a carbon fiber paper（CFP） skeleton.The nanostructures distributed on CFP uniformly and composed of 2 D nanosheets, which would provide plenty of active edge sites and increase the HER activity. Electrochemical measurement suggests that the prepared NiS2/MoS2 exhibit great HER activity including a low overpotential of 102 m V, a small Tafel slope of 67 m V/dec, and a high double-layer capacity of 53.7 m F/cm2 in 1 M KOH aqueous solution. In addition,the HER activity is almost unchanged after galvanostatic technique with applied current densities of10 m A/cm2 for 20 h.
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