Nano-sized γ-Fe₂O₃ as lithium battery cathode

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• 作者：Sho Kanzaki ; Taro Inada ; Tadaaki Matsumura ; Noriyuki Sonoyama ; Atsuo Yamada ; Mikio Takano and Ryoji Kanno
• 刊名：Journal of Power Sources
• 出版年：2005
• 期刊代码：58_03787753
• 类别：ce
• 出版时间：2005
• 卷：146
• 期：1-2
• 页码：323-326
• 文件大小：208 K

摘要

Nano-sized crystalline γ-Fe₂O₃ (particle size ca. 7 nm) was synthesized by mild oxidation of iron micelle obtained from Fe(CO)₅. Heat treatment at 400 °C in vacuum was effective to remove a large amount of organic impurities, the weight of which was over 40 wt.%in the as-prepared solid phase. Significant suppression of the spinel-rocksalt transformation was confirmed as the major nano-sized effect and led to the reversible topochemical lithium interaction with the corresponding lattice volume expansion.