期刊
APPLIED SURFACE SCIENCE
卷 394, 期 -, 页码 1-8出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2016.10.108
关键词
Lithium-ion battery; Carbon-wrapped MnO nanodendrites; Reduced graphene oxide
类别
资金
- National Natural Science Foundation of China [11674138, 61404064]
- Specialized Research Fund for the Doctoral Program of Higher Education [20120211130005]
Carbon-wrapped MnO nanodendrites interspersed on reduced graphene oxide sheets (C-MnO/rGO) were prepared on nickel foam by a facile vacuum filtration and a subsequent thermal treatment. As a binder-free anode of lithium-ion battery, the nanodendritic structure of C-MnO accommodates the huge volume expansion and shortens the diffusion length for lithium ion and electron, rGO sheets prevent C-MnO nanodendites from aggregation and offer a good electronic conduction. As a result, the electrode with such a novel architecture delivers superior electrochemical properties including high reversible capacity, excellent rate capability and cycle stability. Moreover, MnO nanodendrites change to nanoparticles wrapped in graphene sheets during the lithiation/delithiation process, which is a more beneficial microstructure to further increase the specific capacity and cycle life of the electrode. (C) 2016 Elsevier B.V. All rights reserved.
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