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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Bimetallic metal-organic framework derived Co3O4-CoFe2O4 composites with different Fe/Co molar ratios as anode materials for lithium ion batteries
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Bimetallic metal-organic framework derived Co3O4-CoFe2O4 composites with different Fe/Co molar ratios as anode materials for lithium ion batteries

机译:双金属金属 - 有机骨架衍生的CO3O4-COFE2O4复合材料具有不同的Fe / CO摩尔比作为锂离子电池的阳极材料

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摘要

Developing high-performance electrode materials to replace a traditional graphite electrode is critical for the commercialization of lithium ion batteries, which however still remains a great challenge. Herein, we report a suitable method to synthesize a series of well-dispersed nanostructured Co3O4-CoFe2O4 composites (CCFs) from bimetallic metal-organic frameworks (BiMOFs) with varied Fe3+/Co2+ molar ratios. When used as anodes for lithium ion batteries, the CCF-12 composite exhibits a maximum initial discharge capacity of 1328 mA h g(-1), a reversible capacity of 940 mA h g(-1) at 100 mA g(-1) after 80 cycles, and a better rate capability in comparison with those of pure Co3O4 and other CCF composites. The well-dispersed structure and small particle size are believed to mainly contribute to the outstanding electro-chemical performance of CCF-12 electrodes.
机译:开发高性能电极材料以更换传统的石墨电极对于锂离子电池的商业化至关重要,然而仍然是一个巨大的挑战。 在此,我们报告了一种合适的方法,以将来自双金属 - 有机骨架(Bimofs)合成一系列良好分散的纳米结构CO 3 O 4-COFE2O4复合材料(CCF),其具有不同的Fe3 + / CO 2 +摩尔比。 当用作锂离子电池的阳极时,CCF-12复合材料显示出最大初始放电容量为1328 mA Hg(-1),在80℃下以100mA g(-1)的可逆容量为940 mA hg(-1) 与纯CO3O4和其他CCF复合材料相比,循环和更好的速率能力。 据信,分散的结构和小粒径主要有助于CCF-12电极的出色电化学性能。

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    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Sch Mat Sci &

    Engn Tianjin 300350 Peoples R China;

    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Sch Mat Sci &

    Engn Tianjin 300350 Peoples R China;

    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Sch Mat Sci &

    Engn Tianjin 300350 Peoples R China;

    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Sch Mat Sci &

    Engn Tianjin 300350 Peoples R China;

    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Sch Mat Sci &

    Engn Tianjin 300350 Peoples R China;

    Nankai Univ Tianjin Key Lab Met &

    Mol Based Mat Chem Sch Mat Sci &

    Engn Tianjin 300350 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;无机化学;
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