摘要
石墨烯负载的Co-Mo-S复合材料(Co-Mo-S/G)作为超级电容器的电极材料具有巨大的发展潜力。本研究采用简单的水热法制备了Co-Mo-S复合材料,并对所制得的Co-Mo-S/G复合材料的形貌结构和电学性能进行了分析。结果表明,硫化钴钼粒子均匀地分布在石墨烯片层上,材料的比表面积为140.793 m 2/g,较大的比表面积有利于电解液离子和活性位点间的接触,从而增加电极材料的电学性能;在电流密度为1 A/g时,Co-Mo-S/G复合材料的比电容为1162 F/g,远高于单金属复合材料Co-S/G和Mo-S/G的比电容量。
Graphene supported Co-Mo-S composites(Co-Mo-S/G)possess great potential as an electrode material for supercapacitors.Co-Mo-S composites were prepared by a simple hydrothermal method.The morphology and electrical performance of the prepared Co-Mo-S/G composites were analyzed.The results show that molybdenum cobalt sulfide particles are uniformly distributed on the graphene sheets.The specific surface area of the composites is 140.793 m 2/g.The high specific surface area is conducive to the contact between the electrolyte ions and the active sites.Thereby the electrical performance of the electrode material is enhanced.The electrical performance analysis shows that the specific capacitance of Co-Mo-S/G composites is 1162 F/g when the current density is 1 A/g,which is much higher than those of Co-S/G and Mo-S/G.,which are 536 F/g and 389 F/g.
作者
郭萌
曾宪彩
董晓莹
龙茜
郑梓域
张霄
GUO Meng;ZENG Xiancai;DONG Xiaoying;LONG Qian;ZHENG Ziyu;ZHANG Xiao(School of Biological and Chemical Engineering,Nanyang Institute of Technology,Nanyang 473004,China)
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2024年第5期745-751,共7页
Journal of Materials Science and Engineering
基金
河南省自然科学基金青年项目(202300410020)
河南省高等学校重点科研项目(20A430019)。
关键词
石墨烯
硫化钴钼
超级电容器
Graphene
Molybdenum cobalt sulfide
Supercapacitors
