阳极
材料科学
复合数
石墨
碳纤维
碳化
涂层
化学工程
水热碳化
电极
纳米技术
复合材料
扫描电子显微镜
化学
工程类
物理化学
作者
Sookyung Jeong,Xiaolin Li,Jianming Zheng,Pengfei Yan,Ruiguo Cao,Hee Joon Jung,Chongmin Wang,Jun Liu,Ji‐Guang Zhang
标识
DOI:10.1016/j.jpowsour.2016.08.089
摘要
With the ever-increasing demands for higher energy densities in Li-ion batteries, alternative anodes with higher reversible capacity are required to replace the conventional graphite anode. Here, we demonstrate a cost-effective hydrothermal carbonization approach to prepare a hard carbon coated nano-Si/graphite (HC-nSi/G) composite as a high performance anode for Li-ion batteries. In this hierarchical structured composite, the hard carbon coating not only provides an efficient pathway for electron transfer, but also alleviates the volume variation of Si during charge/discharge processes. The HC-nSi/G composite electrode shows excellent performance, including a high specific capacity of 878.6 mAh g−1 based on the total weight of composite, good rate performance, and a decent cycling stability, which is promising for practical applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI