期刊
CHEMICAL ENGINEERING JOURNAL
卷 315, 期 -, 页码 583-590出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2017.01.056
关键词
Hierarchical mesoporous layered-cube; Mn2O3; Dual-solvent; High-capacity; Anode material; Lithium-ion batteries
资金
- National Natural Science Foundation of China [21466036]
- High-Tech Project of Xinjiang Province [201515105]
- Scientific and Technological Innovation Leading Talent Reserve of Xinjiang Province [wr2015cx02]
- Science and Technology Assistance Foundation of Xinjiang Province [201491128]
Unique hierarchical mesoporous layered-cube Mn2O3 has been synthesized in dual-solvent by a solvothermal method. The structure and morphology of the as-prepared materials were analyzed by Xray diffraction and electron microscope. The results show that the as-prepared sample can be indexed as rarely reported orthorhombic Mn2O3 with layered-cube morphology, and the possible formation mechanism is speculated. When evaluated as anode materials, the layered-cube Mn2O3 shows good electrochemical properties with high discharge capacity of 1664.7 mAh g(-1) at 1 A g(-1), maintains capacity of 906.8 mAh g(-1) after 100 cycles. Especially, sample maintains original morphology even at high current density (I A g(-1)) after 100 cycles. The excellent cycle stability and superior rate performance are attributed to hierarchical mesoporous structure in conjunction with its unique layered -cube, which can offer more ions and electrons transporting channels from different directions, provide high interfacial lithium storage and prevent the collapse of structure. (C) 2017 Elsevier B.V. All rights reserved.
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