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Issue 32, 2017
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MnCO3/Mn3O4/reduced graphene oxide ternary anode materials for lithium-ion batteries: facile green synthesis and enhanced electrochemical performance

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Abstract

Mn-Based compounds with high reversible capacities and eco-friendliness are one of the most promising anode materials for lithium ion batteries (LIBs), but their practical applications are still hindered by low rate capability, poor cycling stability, and high cost of production. Herein, we synthesize MnCO3/Mn3O4/reduced graphene oxide (MnCO3/Mn3O4/RGO) ternary composites through a green and facile strategy, which can take full advantage of the raw materials, mitigate pollution effectively, simplify the operating procedure, and shorten the preparation time to realize large-scale preparation. When used as anode materials for LIBs, benefitting from the advantage of their structure and effective synergy among MnCO3, Mn3O4 and graphene, the ternary composites exhibit an excellent cycling stability of 988 mA h g−1 after 200 cycles at 100 mA g−1 and 532 mA h g−1 after 800 cycles at 1 A g−1, which is superior to those of binary MnCO3/RGO and Mn3O4/RGO composites. Analyses using cyclic voltammetry, charge/discharge profiles, and electrochemical impedance spectroscopy reveal improved kinetics in the electrochemical reaction of the MnCO3/Mn3O4/RGO ternary composite with cycling. Furthermore, a systematic study of the potential difference of the redox reaction provides a good explanation for the observed electrochemical performance of the ternary composites.

Graphical abstract: MnCO3/Mn3O4/reduced graphene oxide ternary anode materials for lithium-ion batteries: facile green synthesis and enhanced electrochemical performance

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Publication details

The article was received on 02 Apr 2017, accepted on 18 Jul 2017 and first published on 18 Jul 2017


Article type: Paper
DOI: 10.1039/C7TA02874A
Citation: J. Mater. Chem. A, 2017,5, 17001-17011
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    MnCO3/Mn3O4/reduced graphene oxide ternary anode materials for lithium-ion batteries: facile green synthesis and enhanced electrochemical performance

    R. Zhang, D. Wang, L. Qin, G. Wen, H. Pan, Y. Zhang, N. Tian, Y. Zhou and X. Huang, J. Mater. Chem. A, 2017, 5, 17001
    DOI: 10.1039/C7TA02874A

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