Carbon-Encapsulated Metal Oxide Hollow Nanoparticles and Metal Oxide Hollow Nanoparticles: A General Synthesis Strategy and Its Application to Lithium-Ion Batteries

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• 作者：Jisheng Zhou ; Huaihe Song ; Xiaohong Chen ; Linjie Zhi ; Shubin Yang ; Junping Huo ; Wantai Yang
• 刊名：Chemistry of Materials
• 出版年：2009
• 出版时间：July 14, 2009
• 年：2009
• 卷：21
• 期：13
• 页码：2935-2940
• 全文大小：902K
• 年卷期：v.21,no.13(July 14, 2009)
• ISSN：1520-5002

文摘

A novel and general strategy for the synthesis of carbon-encapsulated metal oxide hollow nanoparticles (HNPs) and pure metal oxide HNPs was developed from carbon-encapsulated metal nanoparticles by controlled oxidation in the air. The materials were characterized by transmission electron microscopy, scanning electron microscopy, and X-ray diffraction measurements. It was found that the morphologies and compositions of HNPs were easily tailored through adjustment of the oxidation conditions. When used as the anode materials for lithium-ion batteries, carbon-encapsulated α-Fe₂O₃ HNPs exhibit excellent cycling performance and a higher reversible capacity of about 700 mA h g⁻¹ after the 60th cycle and possess great potential application in lithium-ion batteries.