• 文献标题:   Graphene-wrapped MnCO3/Mn3O4 nanocomposite as an advanced anode material for lithium-ion batteries: Synergistic effect and electrochemical performances
  • 文献类型:   Article
  • 作  者:   CHEN JQ, HU XL, GAO HT, YAN S, CHEN SD, LIU XH
  • 作者关键词:   graphenewrapped mnco3/mn3o4 nanocomposite, synergistic effect, lithium ion battery, anode material, electrochemical performance
  • 出版物名称:   JOURNAL OF MATERIALS SCIENCE TECHNOLOGY
  • ISSN:   1005-0302
  • 通讯作者地址:  
  • 被引频次:   10
  • DOI:   10.1016/j.jmst.2021.04.058 EA SEP 2021
  • 出版年:   2022

▎ 摘  要

Developing new electrode materials with a high specific capacity for excellent lithium-ion storage properties is very desirable. The MnCO3/Mn3O4 nanoparticles with uniform size (about 50 nm) and shape which are wrapped with graphene have been successfully synthesized via the one-step method for anode material of lithium-ion batteries. The as-prepared graphene-wrapped MnCO3/Mn3O4 nanocomposite exhibits remarkable electrochemical performance, including high reversible specific capacity, outstanding cycling stability, and excellent rate capability in comparison with the bare MnCO3 and MnCO3/Mn3O4 nanocomposite. This is because the synergistic effect of MnCO3 and Mn3O4 nanoparticles and graphene nanosheets act as both electron conductors and volume buffer layers. From the scanning electron microscopy (SEM) analysis, we confirmed that the morphology and structure of the composite are preserved after 200 cycles. This further confirms that graphene-wrapped MnCO3/Mn3O4 nanocomposite acts as a stable template for reversible lithium-ion intercalation/deintercalation. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.