Synthesis of Single-Crystalline Co3O4 Octahedral Cages with Tunable Surface Aperture and Their Lithium Storage Properties

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• 作者：Xi Wang ; Lingjie Yu ; Xing-Long Wu ; Fangli Yuan ; Yu-Guo Guo ; Ying Ma ; Jiannian Yao
• 刊名：Journal of Physical Chemistry C
• 出版年：2009
• 出版时间：September 3, 2009
• 年：2009
• 卷：113
• 期：35
• 页码：15553-15558
• 全文大小：359K
• 年卷期：v.113,no.35(September 3, 2009)
• ISSN：1932-7455

文摘

In this paper, single-crystalline Co₃O₄ hollow octahedral hollow cages with tunable surface aperture were synthesized by the carbon-assisted carbothermal method. On the basis of electron microscopic observation and structural analysis, all the following factors, including the precursor concentration, species of precursor, intrinsic crystal structure of products and carbon-assisted carbothermal reaction, play key roles in the formation of Co₃O₄ octahedral hollow structures. When the as-prepared Co₃O₄ samples were used as the anode materials in lithium ion batteries (LIBs), it was found that the octahedral hollow cages with large surface aperture performed better than both those with small surface aperture and Co₃O₄ nanoparticles, indicating that not only the single-crystalline robust structure but also the tunable surface aperture in the shell could affect the electrochemical property in LIBs.