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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

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Abstract

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 electrochemical performance of CCF-12 electrodes.

Graphical abstract: 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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Publication details

The article was received on 17 Aug 2017, accepted on 21 Oct 2017 and first published on 23 Oct 2017


Article type: Paper
DOI: 10.1039/C7DT03047A
Citation: Dalton Trans., 2017, Advance Article
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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

    M. Zhong, D. Yang, L. Kong, W. Shuang, Y. Zhang and X. Bu, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C7DT03047A

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