• 文献标题:   Layer-by-layered SnS2/graphene hybrid nanosheets via ball-milling as promising anode materials for lithium ion batteries
  • 文献类型:   Article
  • 作  者:   XIA J, LIU L, XIE JJ, YAN HX, YUAN YT, CHEN MF, HUANG C, ZHANG Y, NIE S, WANG XY
  • 作者关键词:   tin disulfide, graphene, lithiumion batterie, anode material
  • 出版物名称:   ELECTROCHIMICA ACTA
  • ISSN:   0013-4686 EI 1873-3859
  • 通讯作者地址:   Coll Xiangtan Univ
  • 被引频次:   25
  • DOI:   10.1016/j.electacta.2018.03.022
  • 出版年:   2018

▎ 摘  要

Layer-by-layered SnS2/graphene (LL-SnS2/G) hybrid nanosheets are fabricated via a simple ball-milling of SnS2 nanoplates obtained through hydrothermal treatment and commercial graphene. When assessed as anode materials for LIBs, LL-SnS2/G shows a high initial reversible capacity of 696.27 mAh g(-1) with a high initial coulombic efficiency (74.16%) at 200 mA g(-1), and negligible capacity fading over 180 cycles. Moreover, LL-SnS2/G also has an excellent rate capability, which delivers a high capacity of 567.78 mAh g(-1) at 2000 mA g(-1). Benefits from synergism between SnS2 nanoplates with high specific capacity and graphene, the graphene increases the conductivity of SnS2, buffers the volume change during lithiation/de-lithiation processes, and provides an effective physical barrier between the active materials and the electrolyte to suppress the shuttle effect of polysulfides formed during de-lithiation processes. LL-SnS2/G shows excellent electrochemical performance and is a promising anode material candidate for lithium ion batteries. (C) 2018 Elsevier Ltd. All rights reserved.