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

作者：Yuan, Guanghui; Xiang, Jiming; Jin, Huafeng; Wu, Lizhou; Jin, Yanzi; Zhao, Yan^*

来源：Materials, 2018, 11(1): 96.

DOI：10.3390/ma11010096

• anode material
• graphene nanocomposite
• lithium-ion battery
• ZnO/nitrogen-doped
• ZnO nanoparticles

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.

• 出版日期2018-1
• 单位安康学院