摘要
通过丁基锂插层剥离MoS 2,得到少层MoS 2,利用水热反应制备Co掺杂MoS 2/石墨烯复合催化剂.通过改变Co掺量,探究不同掺量Co对MoS 2/石墨烯复合催化剂结构和催化性能的影响.实验结果表明,所制得的Co-0.1-MoS 2/石墨烯复合催化剂,在0.5 mol/L的H 2SO 4溶液中,电流密度为10 mA/cm^2下,其过电位为163 mV,Tafel斜率为49.2 mV/dec.经过1000次循环伏安(CV)后,其电催化析氢性能没有显著的衰减,表明该催化剂在电催化析氢反应中具有优异的催化活性和稳定性.
The molybdenum disulfide with less layers were obtained by intercalation and stripping of butyl lithium and then Co-doped MoS 2/graphene composites were prepared by simple hydrothermal reaction.The effect of different doping ratios on the catalytic properties of MoS 2/graphene was investigated by changing the content of Co doping.The result shows that the introduction of the Co-0.1-MoS 2/Graphene composite has a superior catalytic performance with the overpotential is 163 mV and a low Tafel slope of 49.2 mV/dec,in 0.5 mol/L H 2SO 4,at the current density of 10 mA/cm^2.After 1000 cycles of voltammetry(CV),its electrocatalytic hydrogen evolution performance did not decline,which indicates that the catalyst has excellent catalytic activity and stability in electrocatalytic hydrogen evolution reaction.
作者
何贻宁
李晶晶
符钰昕
李琼
黄乐平
蔡子青
HE Yining;LI Jingjing;FU Yuxin;LI Qiong;HUANG Leping;CAI Ziqing(School of Materials Science and Engineering,Wuhan Textile University,Wuhan 430200,China)
出处
《湖北大学学报（自然科学版）》
CAS
2020年第1期72-77,92,共7页
Journal of Hubei University：Natural Science
基金
国家自然科学基金(51803155)资助
关键词
二硫化钼
石墨烯
钴
催化析氢
molybdenum disulfide
graphene
Cobalt
hydrogen evolution reaction
作者简介
何贻宁(1993-),女,硕士生;通信作者:李琼,副教授,E-mail:lqjob_123@163.com。
