作者
Jin Zhao, Yi‐Zhou Zhang, Fan Zhang, Hanfeng Liang, Fangwang Ming, Husam N Alshareef, Zhiqiang Gao
发表日期
2019/2
期刊
Advanced Energy Materials
卷号
9
期号
7
页码范围
1803215
简介
The current Na+ storage performance of carbon‐based materials is still hindered by the sluggish Na+ ion transfer kinetics and low capacity. Graphene and its derivatives have been widely investigated as electrode materials in energy storage and conversion systems. However, as anode materials for sodium‐ion batteries (SIBs), the severe π–π restacking of graphene sheets usually results in compact structure with a small interlayer distance and a long ion transfer distance, thus leading to low capacity and poor rate capability. Herein, partially reduced holey graphene oxide is prepared by simple H2O2 treatment and subsequent low temperature reduction of graphene oxide, leading to large interlayer distance (0.434 nm), fast ion transport, and larger Na+ storage space. The partially remaining oxygenous groups can also contribute to the capacity by redox reaction. As anode material for SIBs, the optimized electrode …
引用总数
20192020202120222023202452832181420
学术搜索中的文章