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Enhancing the cycling stability of Na-ion batteries by bonding MoS2 on assembled carbon-based materials

查看全文 作　　者：Pin [1]Song;Jun [1]Di;Lixing [1]Kang;Manzhang [1]Xu;Bijun [1]Tang;Jun [2]Xiong;Jiewu [3]Cui;Qingsheng [1]Zeng;Jiadong [1]Zhou;Yongmin [1]He;Qundong [1]Fu;Juan [4]Peng;Shasha [1]Guo;Bo [1]Lin;Jingyu [1]Zhang;Peng [1]Meng;Zheng [1]Liu 高影响力作者 机构地区：[1]School of Materials Science&Engineering,Nanyang Technological University,Singapore,639798,Singapore;[2]Institute for Energy Research,Jiangsu University,301 Xuefu Road,Zhenjiang,212013,China;[3]School of Materials Science and Engineering,Hefei University of Technology,Hefei,230009,China;[4]Stage Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering,School of Chemistry and Chemical Engineering,Ningxia University,Yinchuan,750021,China高影响力机构 出　　处：《Nano Materials Science》索引2019年第1卷第4期,共8页高影响力期刊 基　　金：financially supported by the Singapore National Research Foundation under NRF RF Award No. MOE2016-T2-1-131, Tier 1 2017-T1-001-075, MOE2018-T3-1-002 摘　　要：Room temperature Na-ion batteries(SIBs) show great potential for use as renewable energy storage systems.However, the large-scale application of SIBs has been hindered by the lack of an ideal SIBs anode material. We synthesized MoS2 on carbonized graphene-chitosan(G-C) using the hydrothermal method. The strong interaction between the MoS2 and the G-C greatly improved the electron transport rate and maintained the structural stability of the electrode, which lead to both an excellent rate capability and long cycle stability. The G-C monolith was proven to enhance the electrical conductivity of the composites and served as a matrix for uniformly dispersing active MoS2 nanosheets(NSs), as well as being a buffer material to adapt to changes in volume during the cycle.Serving as an anode material for SIBs, the MoS2-G-C electrode showed good cycling stability(527.3mAh g-1 at100 m A g-1 after 200 cycles), excellent rate capability, and a long cycle life(439.1 m Ah g-1 at 1 A g-1 after 200 cycles). 关 键 词：Na-ion batteries Carbon-based materials MOS2 Long cycle life
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