SnS2/RGO/WS2复合材料的制备及其催化性能的研究

Study on preparation and catalytic performance of SnS/RGO/WS composites

为提高锂离子电池负极材料的电催化析氢性能,以石墨烯为载体,采用水热法制备了还原氧化石墨烯(RGO)纳米片负载WS2、Sn S2复合纳米材料。电化学性能测试结果表明,当Sn S2与WS2的物质的量的比为1∶2、电流密度为10 m A/cm2时,其在0.5 mol/L的H2SO4电解质溶液中的过电位为180 m V,Tafel斜率为129 m V/dec。SnS2/RGO/WS2复合纳米材料作为无贵金属的电催化剂具有巨大的潜力。

In order to improve the electrocatalytic hydrogen evolution performance of anode materials of lithium ion battery,the reduced graphene oxide(RGO)nanosheets loaded with WS2 and Sn S2 composite nanomaterials are prepared via a simple hydrothermal method by using graphene as a carrier.The results from electrochemical performance test show that the overpotential of the prepared composite in a 0.5 mol·L-1 H2SO4 electrolyte solution is 180 m V and its Tafel slope is 129 m V·dec-1 when the mass ratio of Sn S2 to WS2 is 1∶2,and the current density is 10 m A·cm-2.The environmentally friendly synthesis method and excellent performance show that Sn S2/RGO/WS2 composite nanomaterial has a great potential as an electrocatalyst without precious metals.