期刊
ELECTROCHIMICA ACTA
卷 269, 期 -, 页码 452-461出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.03.022
关键词
Tin disulfide; Graphene; Lithium-ion batteries; Anode materials
资金
- National Natural Foundation of China [51672234]
- Research Foundation for Hunan Youth Outstanding People from Hunan Provincial Science and Technology Department [2015RS4030]
- Hunan Collaborative Innovation Center of Chemical Engineering & Technology with Environmental Benignity and Effective Resource Utilization
- Program for Innovative Research Cultivation Team in University of Ministry of Education of China [1337304]
- 111 Project [B12015]
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.
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