超级电容器
石墨烯
制作
材料科学
氧化物
储能
纳米技术
电容感应
电解质
电容
丝网印刷
功率密度
光电子学
功率(物理)
电气工程
电极
复合材料
化学
物理化学
替代医学
冶金
病理
工程类
物理
医学
量子力学
作者
Michael P. Down,Samuel J. Rowley‐Neale,Graham C. Smith,Craig E. Banks
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2018-02-14
卷期号:1 (2): 707-714
被引量:138
标识
DOI:10.1021/acsaem.7b00164
摘要
The fabrication, characterisation and energy storage capacity of a graphene oxide (GO) based supercapacitor device is reported.This device is fabricated via a facile screen-printing technique, providing a highly reproducible and flexible symmetrical supercapacitor device.The capacitive properties of these GO devices are investigated in both aqueous electrolytes and room temperature ionic liquids.They are shown to improve the capacitive performance from 0.82 F g -1 displayed by a graphitic screen, to 423 Fg -1 representing a ca.500 fold increase.The GO supercapacitor device exhibits a highly competitive capacitance of 423 Fg -1 , with a impressive power handling capability of up to 13.9 kW kg -1 and an energy density of 11.6 Wh kg -1 .This work demonstrates that GO, before it has been reduced to graphene, is a high performance supercapacitor material of its own rite.
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