Sandwich-Like CNT@Fe3O4@C Coaxial Nanocables with Enhanced Lithium-Storage Capability

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• 作者：Yang Zhang ; Yakun Tang ; Shasha Gao ; Dianzeng Jia ; Junhong Ma ; Lang Liu
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2017
• 出版时间：January 18, 2017
• 年：2017
• 卷：9
• 期：2
• 页码：1453-1458
• 全文大小：427K
• ISSN：1944-8252

文摘

Through the combined method of a low-temperature reflux and calcination, porous sandwich-like CNT@Fe₃O₄@C coaxial nanocables were cleverly constructed, which exhibited a favorable specific capacity of 724.8 mA h g^–1 at 1000 mA g^–1, a satisfying rate performance and admirable Coulombic efficiency (ca. 100%) for anodes of lithium-ion batteries. Due to the enlarged contact surface area, shortened Li⁺ diffusion distance, hierarchical porosity, reasonable structural design and good structural stability, the electrochemical performance of the CNT@Fe₃O₄@C nanocomposites was greatly enhanced in comparison with the traditional iron oxide anodes. So, it is a good candidate for anode materials with high performance.