Facile Sol–Gel/Spray-Drying Synthesis of Interweaved Si@TiO₂&CNTs Hybrid Microsphere as Superior Anode Materials for Li-Ion Batteries

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• 作者：Jiyun Wang ; Xianhua Hou ; Yana Li ; Qiang Ru ; Haiqing Qin…
• 关键词：Silicon ; lithium ; ion battery ; anode ; electrochemistry
• 刊名：Journal of Electronic Materials
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：45
• 期：11
• 页码：5773-5780
• 全文大小：1,762 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  Electronics, Microelectronics and Instrumentation
  Solid State Physics and Spectroscopy
  
• 出版者：Springer Boston
• ISSN：1543-186X
• 卷排序：45

文摘

A unique intertwined structure of silicon-based composite (Si@TiO₂&CNTs) has been synthesized by sol–gel and spray drying methods. The Si@TiO₂&CNTs is mainly composed of three kinds of materials:the prepared nanosilicon particles, TiO_2, and carbon nanotubes (CNTs). A layer of TiO₂ particles is found effective for enhancing the electrical conductivity and structure stability of the silicon particles. Additionally, the twisted CNTs are beneficial to build a better conductive network, consequently improving the anode working conditions when the cell is charged or discharged. As a lithium ion battery anode, a specific capacity of approximately 1521 mAh g−1 after 100 cycles is obtained.