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作者
作者:Liu, J (Liu, Jun)[2,3 ]; Kopold, P (Kopold, Peter)[2 ]; van Aken, PA (van Aken, Peter A.)[2 ]; Maier, J (Maier, Joachim)[2 ]; Yu, Y (Yu, Yan)[1,2 ]
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文献类型:Article
摘要
Silicon is an attractive anode material in energy storage devices, as it has a ten times higher theoretical capacity than its state-of-art carbonaceous counterpart. However, the common process to synthesize silicon nanostructured electrodes is complex, costly, and energy-intensive. Three-dimensional (3D) porous silicon-based anode materials have been fabricated from natural reed leaves by calcination and magnesiothermic reduction. This sustainable and highly abundant silica source allows for facile production of 3D porous silicon with very good electrochemical performance. The obtained silicon anode retains the 3D hierarchical architecture of the reed leaf. Impurity leaching and gas release during the fabrication process leads to an interconnected porosity and the reductive treatment to an inside carbon coating. Such anodes show a remarkable Li-ion storage performance: even after 4000 cycles and at a rate of 10C, a specific capacity of 420mAhg(-1) is achieved.
关键词
作者关键词:anode materials; carbon coating; lithium-ion batteries; mesoporous silica; reed leaves
作者信息
通讯作者地址:Yu, Y (通讯作者)
 | Univ Sci & Technol China, Chinese Acad Sci, Dept Mat Sci & Engn, Key Lab Mat Energy Convers, Hefei 230026, Peoples R China. |
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电子邮件地址:yanyumse@ustc.edu.cn
出版商
类别分类
研究方向:Chemistry
Web of Science 类别:Chemistry, Multidisciplinary