Journal
NANOTECHNOLOGY
Volume 30, Issue 18, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aafec3
Keywords
lithium-ion batteries; Cu3V2O7(OH)(2) center dot 2H(2)O; graphene oxide nanocomposite; synergistic effect
Funding
- '973' project [2015CB251103]
- Jilin University [SXGJQY2017-10]
- National Natural Science Foundation of China [21873017]
- Science and Technology Development Project, Jilin Province [20180101211JC]
- National Postdoctoral Program for Innovative Talents [BX20180119]
- Graduate Innovation Fund of Jilin University [2016012]
- Jilin Province [SXGJQY2017-10]
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Transition metal oxides (TMOs) are widely accepted as one of the alternatives for the graphite anode in lithium-ion batteries (LIBs) owing to the high specific capacity and facile synthesis of nanoscale materials facilitating fast ionic transfer. However, the lower electronic conductivity always impedes the application of TMOs. Herein, we report a graphene oxide wrapped layer-structured Cu3V2O7(OH)(2) center dot 2H(2)O nanocomposite (CVO/GO) synthesized via an in situ co-precipitation method. It is corroborated that the introduction of GO not only provides more active sites for lithium-ion storage, but also improves the charge transfer rate of the electrode, issuing an enhanced electrochemical performance. As expected, the CVO/GO nanocomposite exhibits an ultrahigh specific capacity of 870 mA h g(-1) at 0.1 A g(-1) compared with CVO nanoparticles. Even at a high current density of 5 A g(-1), a specific capacity of 158 mA h g(-1) could be achieved for the CVO/GO nanocomposite.
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