Scalable production of transition metal disulphide/graphite nanoflake composites for high-performance lithium storage
文献类型： 外文期刊
作者： Duan, Zhi-Qiang 1 ; Sun, Yan-Chun 2 ; Liu, Yi-Tao 1 ; Xie, Xu-Ming 1 ; Zhu, Xiao-Dong 3 ;
作者机构： 1.Tsinghua Univ, Dept Chem Engn, Minist Educ, Adv Mat Lab, Beijing 100084, Peoples R China
2.Chinese Acad Fishery Sci, Heilongjiang River Fishery Res Inst, Harbin 150070, Peoples R China
3.Harbin Inst Technol, Acad Fundamental & Interdisciplinary Sci, Harbin 150080, Peoples R China
期刊名称：RSC ADVANCES （ 影响因子：3.361； 五年影响因子：3.39 ）
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收录情况： SCI
摘要： A facile, industrially viable strategy is proposed for the scalable production of transition metal disulphide/graphite nanoflake composites by a combination of ball milling and short-time sonication. The experimental conditions are mild and energy efficient, and the yields are fairly high. This strategy can produce larger MoS2 and WS2 nanoflakes with more lithium storage sites than the conventional, longtime sonication method. Besides, the obtained graphite nanoflakes have a higher degree of lattice integrity than reduced graphene oxide that is structurally permanently damaged, and can thus serve as a high-efficiency conductive additive. A prominent synergy is witnessed between the excellent electrochemical performances of the MoS2 and WS2 nanoflakes and the high electronic conductivity of the graphite nanoflakes. The resulting MoS2 and WS2/graphite nanoflake composites exhibit superior lithium storage capacities, cycling stabilities and rate capabilities, thus providing a basis for developing high-performance anodes of next-generation lithium-ion batteries.
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