• 文献标题:   Constructing highly stable lithium storage materials by improving the bond strength of MoS2 to graphene via chitosan
  • 文献类型:   Article
  • 作  者:   LAN B, ZHANG XQ, WANG YS, WEI CC, WEN GW
  • 作者关键词:   mos2, chitosan, bonding, lithiumion batterie
  • 出版物名称:   CARBON
  • ISSN:   0008-6223 EI 1873-3891
  • 通讯作者地址:  
  • 被引频次:   6
  • DOI:   10.1016/j.carbon.2022.03.014 EA MAR 2022
  • 出版年:   2022

▎ 摘  要

MoS2 is considered a promising substitute anode for lithium-ion batteries (LIBs) due to its twodimensional layered structure and large theoretical specific capacity. However, the low conductivity and poor structural stability of MoS2 limit its practical applications. Here, a simple self-assembly strategy is adopted to successfully synthesize MoS2/C@G with a 3D porous hybrid nanosheet structure. By utilizing the chitosan can effectively bonding the layered MoS2 with N-doped graphene to construct a layered sandwich-like structure, which ensures the uniform and non-agglomeration distribution of the synthesized few-layer MoS2 nanosheets between graphene sheets. In addition, the strong bond between MoS2 and graphene makes these two components tightly bonded, which greatly improves the electronic conduction and guarantees structural stability. Based on the above advantages, MoS2/C@G as the electrode for LIBs exhibits high reversible capacity and superior cycling stability, with a capacity of 667.7 mAh g(-1) at a high current density of 0.5 A g(-1) after ultra-long 1000 cycles, even without significant capacity decay. This method also provides an advanced perspective for the fabrication of highperformance graphene composite anode materials. (C) 2022 Elsevier Ltd. All rights reserved.