Issue 45, 2017

Bimetallic metal–organic framework derived Co3O4–CoFe2O4 composites with different Fe/Co molar ratios as anode materials for lithium ion batteries

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

Supplementary files

Article information

Article type
Paper
Submitted
17 Aug 2017
Accepted
21 Oct 2017
First published
23 Oct 2017

Dalton Trans., 2017,46, 15947-15953

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, 46, 15947 DOI: 10.1039/C7DT03047A

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