CuMn2O4/graphene nanosheets as excellent anode for lithium-ion battery
- Laboratory of Inorganic Energy and Environment Materials, School of Materials Science and Engineering, University of Jinan, Jinan, 250022 (China)
- School of Physics and Electronics, Hunan University, Changsha, 410082 (China)
Highlights: • Spinel CuMn{sub 2}O{sub 4} and CuMn{sub 2}O{sub 4}/rGO are synthesized via a reflux route. • The electrochemical properties of CuMn{sub 2}O{sub 4}/rGO for LIBs are firstly explored. • CuMn{sub 2}O{sub 4}/rGO composites display a good battery performance. • Capacities of 1148 and 935 mA h g{sup −1} can be maintained after 20 and 150 cycles. - Abstract: Spinel copper manganese oxide (CuMn{sub 2}O{sub 4}) is synthesized via a reflux route and studied as anode for lithium-ion battery for the first time. In this work, graphene nanosheets are incorporated into the CuMn{sub 2}O{sub 4} composites to enhance the cycling performance of CuMn{sub 2}O{sub 4} material. Graphene nanosheets not only provide enough void space to buffer the volume expansion/contraction but also afford a conductive network to enhance the conductivity. The as-obtained CuMn{sub 2}O{sub 4}/graphene composites deliver a high discharge specific capacity of 935 mA h g{sup −1} after 150 cycles at a current density of 50 mA g{sup −1}. Additionally, reaction mechanism studies indicate that CuMn{sub 2}O{sub 4} transforms into nano-sized hybrid of CuO-MnO with a spongy porous structure during discharge-charge processes.
- OSTI ID:
- 22804078
- Journal Information:
- Materials Research Bulletin, Vol. 104; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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