Facile Spray Drying Route for the Three-Dimensional Graphene-Encapsulated Fe2O3 Nanoparticles for Lithium Ion Battery Anodes

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• 作者：Guan-Wei Zhou ; Jiulin Wang ; Pengfei Gao ; Xiaowei Yang ; Yu-Shi He ; Xiao-Zhen Liao ; Jun Yang ; Zi-Feng Ma
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：January 23, 2013
• 年：2013
• 卷：52
• 期：3
• 页码：1197-1204
• 全文大小：494K
• 年卷期：v.52,no.3(January 23, 2013)
• ISSN：1520-5045

文摘

Crumbled graphene sheet-wrapped nano-Fe₂O₃ (Fe₂O₃@GS) composites with a three-dimension (3D) hierarchical structure have been made by a facile and efficient spray drying route with a following mild heat reduction in air. In the as-obtained composites, the crumpled GS around Fe₂O₃ particles could not only provide a 3D conductive matrix but also buffer the volume change of Fe₂O₃. Fe₂O₃ particles which evenly distribute in the crumpled GS could also act as spacers to avoid the close restacking of GS. Compared to the bare Fe₂O₃, the Fe₂O₃@GS composites as Li ion battery anodes show dramatically improved electrochemical performance including cyclic stability and rate capability owing to the special encapsulated structure and the excellent synergistic effect between the two components.