Facile Preparation of Porous Mn2SnO4/Sn/C Composite Cubes as High Performance Anode Material for Lithium-Ion Batteries

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• 作者：Kuang Liang ; Tuck−Yun Cheang ; Tao Wen ; Xiao Xie ; Xiao Zhou ; Zhi−Wei Zhao ; Cong−Cong Shen ; Nan Jiang ; An−Wu Xu
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：February 25, 2016
• 年：2016
• 卷：120
• 期：7
• 页码：3669-3676
• 全文大小：494K
• ISSN：1932-7455

文摘

In recent years, Sn-based materials have been explored as potential anodes for high energy lithium-ion batteries. However, their severe volume expansion in lithiation procedure could lead to poor cycling property and inferior rate capability, which limit the applications of Sn-based materials in lithium-ion batteries. In this study, we have designed and prepared uniform Mn₂SnO₄/Sn/carbon composite cubic particles with a porous structure as anode material through facile hydrothermal method and subsequent annealing process. The results demonstrate that the well-crystallized three-dimensional (3D) cubes with rounded corners consist of nanoparticles uniformly arranged in carbon matrix. The as-made Mn₂SnO₄/Sn/C anode exhibits excellent electrochemical performance and delivers 908 mA h g^–1 of discharge capacity up to the 100th cycle at a current density of 500 mA g^–1, with a Coulombic efficiency above 97%. The remarkable performance can be attributed to the formation of unique conductive frameworks and the porous structure.