Core–Shell Sn–Ni–Cu-Alloy@Carbon Nanorods to Array as Three-Dimensional Anode by Nanoelectrodeposition for High-Performance Lithium Ion Batteries

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• 作者：Hao Peng ; Rui Li ; Jiangtao Hu ; Wenjun Deng ; Feng Pan
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：May 18, 2016
• 年：2016
• 卷：8
• 期：19
• 页码：12221-12227
• 全文大小：582K
• 年卷期：0
• ISSN：1944-8252

文摘

We report the synthesis of a novel three-dimensional anode based on the core–shell Sn–Ni–Cu-alloy@carbon nanorods which was fabricated by pulse nanoelectrodeposition. Li ion batteries equipped with the three-dimensional anode demonstrated almost 100% capacity retention over 400 cycles at 450 mA g^–1 and excellent rate performance even up to 9000 mA g^–1 for advanced Li-ion battery. Insight of the high performance can be attributed to three key factors, Li–Sn alloys for Li-ion storage, Ni–Cu matrix for the electronic conductive and nanorods structure, and the carbon shell for the electronic/Li-ion conductive and holding stable solid electrolyte interphase (SEI), because these shells always kept stable volumes after extension of initial charge–discharge cycles.