A Fe₂O₃ nanoparticle/carbon aerogel composite for use as an anode material for lithium ion batteries

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• 作者：Nianping Liu ; Jun Shen ; ^{shenjun67@tongji.edu.cn} ; Dong Liu
• 关键词：Carbon aerogel ; Sol&ndash ; gel ; Electrochemistry ; Anode ; Maghemite
• 刊名：Electrochimica Acta
• 出版年：2013
• 出版时间：1 May, 2013
• 年：2013
• 卷：97
• 期：Complete
• 页码：271-277
• 全文大小：1124 K

文摘

A Fe₂O₃ nanoparticle/carbon aerogel composite (Fe₂O₃/CA) is prepared from a carbon aerogel prepared by a sol-gel process by a simple soaking in a Fe(NO₃)₃ solution and subsequent heat treatment at 600 ¡ãC. Thermal gravimetric analysis, X-ray diffraction, scanning and transmission electron microscopy, energy dispersive X-ray analysis and X-ray photoelectron spectroscopy are used to characterize the products. The electrochemical performance of samples with different Fe₂O₃ content is evaluated. The optimal sample Fe₂O₃/CA-60 exhibits a good capacity retention of 916 and 617 mAh g^?1 for the 1st and 100th cycle, respectively, which is much better than that of pure Fe₂O₃ and CA. The improved cycling performance, specific capacity and rate capability of Fe₂O₃/CA is mainly attributed to the synergistic effects of the nanoporous network skeleton of CA and the uniformly dispersed Fe₂O₃ nanoparticles.