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Anchoring ZnO Nanoparticles in Nitrogen-Doped Graphene Sheets as a High-Performance Anode Material for Lithium-Ion Batteries

1
School of Chemistry and Chemical Engineering, Ankang University, Ankang 725000, China
2
Synergy Innovation Institute of GDUT, Heyuan 517000, China
*
Author to whom correspondence should be addressed.
Materials 2018, 11(1), 96; https://doi.org/10.3390/ma11010096
Received: 21 November 2017 / Revised: 25 December 2017 / Accepted: 5 January 2018 / Published: 10 January 2018
A novel binary nanocomposite, ZnO/nitrogen-doped graphene (ZnO/NG), is synthesized via a facile solution method. In this prepared ZnO/NG composite, highly-crystalline ZnO nanoparticles with a size of about 10 nm are anchored uniformly on the N-doped graphene nanosheets. Electrochemical properties of the ZnO/NG composite as anode materials are systematically investigated in lithium-ion batteries. Specifically, the ZnO/NG composite can maintain the reversible specific discharge capacity at 870 mAh g−1 after 200 cycles at 100 mA g−1. Besides the enhanced electronic conductivity provided by interlaced N-doped graphene nanosheets, the excellent lithium storage properties of the ZnO/NG composite can be due to nanosized structure of ZnO particles, shortening the Li+ diffusion distance, increasing reaction sites, and buffering the ZnO volume change during the charge/discharge process. View Full-Text
Keywords: anode material; graphene nanocomposite; lithium-ion battery; ZnO/nitrogen-doped; ZnO nanoparticles anode material; graphene nanocomposite; lithium-ion battery; ZnO/nitrogen-doped; ZnO nanoparticles
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Yuan, G.; Xiang, J.; Jin, H.; Wu, L.; Jin, Y.; Zhao, Y. Anchoring ZnO Nanoparticles in Nitrogen-Doped Graphene Sheets as a High-Performance Anode Material for Lithium-Ion Batteries. Materials 2018, 11, 96.

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