• 文献标题:   Fabrication of uniform Si-incorporated SnO2 nanoparticles on graphene sheets as advanced anode for Li-ion batteries
  • 文献类型:   Article
  • 作  者:   LIANG XQ, WANG JJ, ZHANG SY, WANG LY, WANG WF, LI LY, WANG HF, HUANG D, ZHOU WZ, GUO J
  • 作者关键词:   tin oxide, si incorporation, graphene, nanocomposite, liion batterie
  • 出版物名称:   APPLIED SURFACE SCIENCE
  • ISSN:   0169-4332 EI 1873-5584
  • 通讯作者地址:   Guangxi Univ
  • 被引频次:   7
  • DOI:   10.1016/j.apsusc.2018.12.288
  • 出版年:   2019

▎ 摘  要

SnO2-based anodes with high capacity are appealing for Li-ion batteries (LIBs). However, the large volume change and inferior cycling stability limit their practical application. To mitigate these problems, a novel nanocomposite of silicon-incorporated SnO2 with graphene sheets (STOG) has been successfully fabricated as anode material for LIBs. Through a simple hydrolysis process, ultrafine Si-incorporated SnO2 (STO) nanoparticles are uniformly loaded on the graphene sheets. Further it is found that Si incorporation brings about the Si-O-Sn bonding in the SnO2 matrix and strengthens the Sn-O-C bonding between STO and graphene. These merits can enhance the structural stability and electron/ion transport of STOG nanocomposite, facilitating the reversible conversion of Sn-SnO2. As a result, this STOG material delivers a high discharge capacity of 1117.8 mAh g(-1) and retains 92.5% of the second capacity after 100 cycles at 0.1 A g(-1). Furthermore, an excellent rate capacity of 683.9 mAh g(-1) can be obtained at a high current of 1 A g(-1). This work provides an effective way to design high-performance SnO2-based anode material for LIBs.