Virus-Enabled Silicon Anode for Lithium-Ion Batteries

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• 作者：Xilin Chen ; Konstantinos Gerasopoulos ; Juchen Guo ; Adam Brown ; Chunsheng Wang ; Reza Ghodssi ; James N. Culver
• 刊名：ACS Nano
• 出版年：2010
• 出版时间：September 28, 2010
• 年：2010
• 卷：4
• 期：9
• 页码：5366-5372
• 全文大小：470K
• 年卷期：0
• ISSN：1936-086X

文摘

A novel three-dimensional Tobacco mosaic virus assembled silicon anode is reported. This electrode combines genetically modified virus templates for the production of high aspect ratio nanofeatured surfaces with electroless deposition to produce an integrated nickel current collector followed by physical vapor deposition of a silicon layer to form a high capacity silicon anode. This composite silicon anode produced high capacities (3300 mAh/g), excellent charge−discharge cycling stability (0.20% loss per cycle at 1C), and consistent rate capabilities (46.4% at 4C) between 0 and 1.5 V. The biological templated nanocomposite electrode architecture displays a nearly 10-fold increase in capacity over currently available graphite anodes with remarkable cycling stability.