WS_(2)/C复合材料的制备及其电催化析氢性能研究  

Preparation of WS_(2)/C composite material and its electrocatalytic hydrogen evolution performance

作　　者：万磊 史春薇 余宗宝 武宏大 肖伟 耿忠兴 任铁强[1] 杨占旭[1] WAN Lei;SHI Chun-wei;YU Zong-bao;WU Hong-da;XIAO Wei;GENG Zhong-xing;REN Tie-qiang;YANG Zhan-xu*(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《燃料化学学报》2021年第9期1362-1370,共9页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(21671092);辽宁省“兴辽英才”创新领军人才项目(XLYC1802057);辽宁省-沈阳材料科学国家研究中心联合研发基金(2019010280-JH3/301);抚顺英才计划青年拔尖人才(FSYC202007001)资助。

摘　　要：以H_(2)WO_(4)和EDA为前驱体,通过机械搅拌与原位固相热解,得到WO_(3)/C中间体,通过高温硫化得到WS_(2)/C复合材料。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)等仪器分析方法对制备的WS_(2)/C复合材料结构和形貌等进行表征。同时对材料进行了电催化稳态极化曲线(LSV)、塔菲尔斜率(Tafel)、循环稳定性(CP)和电化学阻抗(PEIS)和电化学活性表面积(ECSA)测试,分析了催化剂的电催化性能。结果表明,当WS_(2)/C复合材料的电流密度为10 mA/cm^(2)时,过电位为179 mV,Tafel斜率为98 mV/dec。With H_(2)WO_(4) and EDA as precursors,WO_(3)/C intermediate was obtained by mechanical stirring and in-situ solid-phase pyrolysis,then WS_(2)/C composite material was obtained by high temperature vulcanization.The WS_(2)/C composite was characterized by X-ray diffraction(XRD),scanning electron microscope(SEM),transmission electron microscope(TEM),X-ray photoelectron spectroscopy(XPS)and other instrumental analysis methods.At the same time,the electrocatalytic performance of the catalyst was analyzed by the electrocatalytic steady-state polarization curve(LSV),Tafel slope(Tafel),cycle stability(CP),electrochemical impedance(PEIS)and electrochemically active surface area(ECSA)tests of the material.The results show that when the current density of the WS_(2)/C composite is 10 mA/cm^(2),overpotential is 179 mV,and Tafel slope is 98 mV/dec.

关 键 词：WS2 电催化 析氢反应 

分 类 号：O646[理学—物理化学]