第31卷第6期 2016年6月
文章编号：1000-324X(2016)06-0575-06
无机材料学报 Jourmal of Inorganic Materials
Vol.31 No.6 Jun.,2016
DOI:10.15541/jim20150409
准三维MoS2/graphene复合材料储锂性能研究
梁培，邢淞，舒海波，张琳，胡陈力(中国计量学院光学与电子科技学院杭州310018)
摘要：本研究以氧化石墨烯为前驱体，利用钼酸钠和硫脲通过水热法在不同阳离子表面活性剂(C,4TAB，CisTAB CisTAB)的辅助下合成得到MoS/GF复合结构.XRD和SEM分析表明，MoSz/GF复合材料因阳离子表面活性剂的不同而呈现不同的结构和表面形貌；电化学性能测试表明其结构和表面形貌对电极的容量、循环稳定性和倍率性能都有较大影响。相比于CTAB和CisTAB，CuTAB辅助合成的MoSz/GF复合结构具有最高的首次放电容量(955mAh/g)，50次循环后仍保持751mAh/g的可逆容量，而且倍率性能更好。本研究揭示MoS/GF复合材料电化学性能的提升可归因于其独特的praticle-on-sheet结构以及MoSz与石墨烯之间的协同作用，
关键调：阳离子表面活性剂；MoS,/GF复合结构；电化学性能；锂离子电池中图分类号：TQ174文献标识码：A
AnalogousThree-dimensionalMoSz/GrapheneCompositesforReversible
LiStorage
LIANG Pei, XING Song, SHU Hai-Bo, ZHANG Lin, HU Chen-Li
(College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China)
Abstract: MoS,/GF composites were synthesized by hydrothermal method using graphene oxide (GO), sodium mo-lybdate and thiourea as raw materials with assistance of different cationic surfactants (CTAB, ChTAB, CrgTAB). The investigation of as-prepared samples by X-ray diffraction and scanning electron microscopy demonstrate that the composites have presented different morphologies and microstructures which may be resulted from the cationic sur factants. Electrochemical performances for reversible Li' storage of the composites reveal that the capacities, cycling stability and rate capability are influenced by different morphologies and microstructures, Comparison to CrTAB and CsTAB assistance, the composite synthesized with Cr,TAB assistance delivers a high first discharge capacity of 955 mAh/g and reversible capacity of 751 mAh/g after 50 cycles, shoowing excellent rate capability. The improvement in the electrochemical performances of the composites synthesized with CμTAB assistance is attributed to its special particle-on-sheet structure and synergistic interactions between graphene and MoS2.
Key words: cationic surfactants; MoSs/GF composites; electrochemical performances; lithium ion battery
锂离子二次电池由于高能量密度、高功率密度、循环寿命长和使用温度范围宽等优点，在移动设备、
电动汽车和航空航天等领域逐步得到广泛应用]。随着这些领域技术不断发展，对锂离子电池性能的要
收稿日期：2015-08-28；收到修改稿日期：2015-11-11
基金项目：国家自然科学基金(61006051，61177050)；浙江省科技厅公益技术应用研究(2013C31068);2014浙江省公益性技
术应用研究(分析测试(2014C37042)
National Natural Science Foundation of China (61006051, 61177050); Zhejiang Province Department of Public Wel-e
carch (Analytical Test) Project (2014C37042)
Application Rese
作者简介：架培(1982)，男，博士，副教投.E-mail:plianghustgmail.com 万方数据