• 文献标题:   V3S4 Nanosheets Anchored on N, S Co-Doped Graphene with Pseudocapacitive Effect for Fast and Durable Lithium Storage
  • 文献类型:   Article
  • 作  者:   WU NT, MIAO D, ZHOU XL, ZHANG LL, LIU GL, GUO DL, LIU XM
  • 作者关键词:   v3s4 nanosheet, pseudocapacitive, n s codoped graphene, lithium ion batterie
  • 出版物名称:   NANOMATERIALS
  • ISSN:  
  • 通讯作者地址:   Luoyang Normal Univ
  • 被引频次:   4
  • DOI:   10.3390/nano9111638
  • 出版年:   2019

▎ 摘  要

Construction of a suitable hybrid structure has been considered an important approach to address the defects of metal sulfide anode materials. V3S4 nanosheets anchored on an N, S co-coped graphene (VS/NSG) aerogel were successfully fabricated by an efficient self-assembled strategy. During the heat treatment process, decomposition, sulfuration and N, S co-doping occurred. This hybrid structure was not only endowed with an enhanced capability to buffer the volume expansion, but also improved electron conductivity as a result of the conductive network that had been constructed. The dominating pseudocapacitive contribution (57.78% at 1 mV s(-1)) enhanced the electrochemical performance effectively. When serving as anode material for lithium ion batteries, VS/NSG exhibits excellent lithium storage properties, including high rate capacity (480 and 330 mAh g(-1) at 5 and 10 A g(-1), respectively) and stable cyclic performance (692 mAh g(-1) after 400 cycles at 2 A g(-1)).