期刊
NANOSCALE
卷 7, 期 20, 页码 9133-9139出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr00465a
关键词
-
类别
资金
- National Natural Science Foundation of China [51202120]
- National Key Basic Research (973) Program [2014CB932400]
- Shenzhen Government [KQCX20120814155245647, CYJ20130402145002411]
Here we report an electrostatic spray deposition method to prepare three-dimensional porous graphene electrodes for supercapacitor applications. The symmetric supercapacitor exhibits excellent specific capacitance (366 F g(-1) at 1 A g(-1) in 6 M KOH) and long cycle life (108% capacitance retention up to 40 000 cycles). Moreover, the energy densities of the organic and aqueous electrolyte based supercapacitors reach 22.9 and 8.1 Wh kg(-1) when the power densities are 119.2 and 15.4 kW kg(-1), respectively. Compared with the previously reported graphene based supercapacitors, the improved properties could be attributed to the excellent three-dimensional open porous electrode structure, which is favorable for the ion diffusion and electron transport. In addition, this method provides a simple electrode-fabrication route without the involvement of conducting additives and binders. It may find vast applications in thin and miniaturized energy storage scenarios.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据