材料科学技术(英文版)2022，Vol.99Issue(4) ：9-17.

Graphene-wrapped MnCO3/Mn3O4 nanocomposite as an advanced anode material for lithium-ion batteries:Synergistic effect and electrochemical performances

Jingqi Chen Xianlei Hu Haitao Gao Shu Yan Shoudong Chen Xianghua Liu
材料科学技术(英文版)2022，Vol.99Issue(4) ：9-17.
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Graphene-wrapped MnCO3/Mn3O4 nanocomposite as an advanced anode material for lithium-ion batteries:Synergistic effect and electrochemical performances

Jingqi Chen 1Xianlei Hu 2Haitao Gao 2Shu Yan 3Shoudong Chen 4Xianghua Liu1
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作者信息

  • 1. State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China;Key Laboratory of Lightweight Structural Materials,Shenyang 110819,China
  • 2. State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China
  • 3. School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China
  • 4. School of Mechanical Engineering,Tongling University,Tongling 244061,China
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Abstract

Developing new electrode materials with a high specific capacity for excellent lithium-ion storage proper-ties 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 mate-rial 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 nanocom-posite.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 cy-cles.This further confirms that graphene-wrapped MnCO3/Mn3O4 nanocomposite acts as a stable tem-plate for reversible lithium-ion intercalation/deintercalation.

Key words

Graphene-wrapped MnCO3/Mn3O4 nanocomposite/Synergistic effect/Lithium-ion battery/Anode material/Electrochemical performance

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基金项目

111 Project(B16009)

National Natural Science Foundation of China(51704065)

National Natural Science Foundation of China(51804219)

Fundamental Research Funds for the Central Universities of China(N2002022)

Natural Sci-ence Foundation of Anhui Province,China(1808085QE161)

出版年

2022
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
参考文献量37
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