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Self-assembly of Fe 2 O 3 /ordered mesoporous carbons for high-performance lithium-ion batteries
Journal of Electroanalytical Chemistry ( IF 4.5 ) Pub Date : 2018-05-01 , DOI: 10.1016/j.jelechem.2018.03.066
Liying Kang , Zhenglong Yang , Yanbin Xu , Wei Jiang , Feng Wang , Yanfeng Meng , Na Liu , Fenghua Liu , Shujiang Ding

Abstract Fe2O3/ordered mesoporous carbons (OMCs) have been synthesized by a facile one-pot hydrothermal method via self-assembly process. The combination of OMCs and anchored Fe2O3 nanoparticles shows a synergistic effect which results in a kind of anode materials with enhanced electrochemical performance for lithium ion batteries. OMCs with highly porous mesostructure and good conductivity not only alleviate the problem of volume variation and agglomeration of Fe2O3, but shorten the diffusion pathway of Li+ ions, which efficiently overcomes the problem of rapid capacity loss of iron oxide. Moreover, appropriate loading amount of Fe2O3 nanoparticles is believed to be a key factor to enhance the capacity of anode materials. The materials deliver an excellent reversible capacity of 789 mAh g−1 at a current density of 100 mA g−1 after 120 cycles.

中文翻译:

用于高性能锂离子电池的Fe 2 O 3 /有序介孔碳的自组装

摘要 Fe2O3/有序介孔碳(OMCs)已通过自组装过程通过简便的一锅水热法合成。OMCs 和锚定的 Fe2O3 纳米颗粒的组合显示出协同效应,导致一种具有增强的锂离子电池电化学性能的负极材料。OMCs具有高度多孔的介孔结构和良好的导电性,不仅缓解了Fe2O3的体积变化和团聚问题,而且缩短了Li+离子的扩散路径,有效克服了氧化铁容量损失快的问题。此外,Fe2O3 纳米颗粒的适当负载量被认为是提高负极材料容量的关键因素。该材料在 120 次循环后在 100 mA g-1 的电流密度下提供了 789 mAh g-1 的优异可逆容量。
更新日期:2018-05-01
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