电沉积还原氧化石墨烯对人造石墨锂离子电池负极材料电化学性能的影响
Effect of Electroplating of Reduced Graphene Oxide on Electrochemical Performance of Artificial Graphite Anode for LIBs
DOI: 10.12677/MS.2021.113022, PDF,   
作者: 丁浩原*, 庄云朋：上海交通大学电子信息与电气工程学院，上海
关键词: 石墨烯；负极材料；锂离子电池；Graphene； Anodes； Lithium-Ion Batteries
摘要: 石墨烯作为具有优异电化学性能的导电碳材料，已经被广泛应用于锂离子电池负极材料当中。本文作者利用电沉积方法制备了石墨/还原氧化石墨烯复合材料，并研究了所制备复合材料的形貌与电化学、动力学性能，同时讨论了不同电沉积时间对其形貌和电化学性能的影响。结果显示，在电沉积时间为30分钟的条件下，石墨/还原氧化石墨烯复合材料表现出较高的首次库伦效率、较优的倍率和循环性能。经过对比发现，石墨烯层均匀的包覆在石墨颗粒表面，同时形成的网络结构将石墨颗粒之间进行了桥连是其电化学性能提高的主要原因。
Abstract: As a conductive carbon material with excellent electrochemical properties, graphite has been widely used in anode materials of lithium-ion batteries. In this paper, graphite/reduced graphene oxide composites were prepared by electroplating, and the morphology, electrochemical and ki-netic properties of the composites were studied. The effects of different electroplating time on the morphology and electrochemical properties of the composites were also discussed. The results showed that the graphite/reduced graphene oxide composites exhibited higher initial coulombic efficiency, cycle stability, and better rate capability under the condition of 30 min. After compari-son, it was found that the graphene layer was uniformly coated on the surface of graphite particles, and the network structure formed bridged the graphite particles, which was the main reason for the improvement of its electrochemical performance.
文章引用：丁浩原, 庄云朋. 电沉积还原氧化石墨烯对人造石墨锂离子电池负极材料电化学性能的影响[J]. 材料科学, 2021, 11(3): 169-177. https://doi.org/10.12677/MS.2021.113022

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