摘要
为寻找高效、环保的方法制备出性能优异的石墨烯超级电容器电极,采用制备氧化石墨的改进法得到酸、中性氧化石墨(S-GO、Z-GO),经微波膨胀得到不同形貌的石墨烯纳米片(WS-GO和WZ-GO),对WS-GO活化得样品HWS-GO;通过SEM、FT-IR和电化学工作站对样品的形貌、组成和电化学性能进行表征分析。结果显示:WS-GO比电容可达222 F/g,可逆性好,商业应用潜力大。
In order to find efficient and environmentally friendly method to prepare an excellent performance graphene super capacitor electrode, acidic graphite oxide （S-GO） and neutral graphite oxide （Z-GO） were prepared by the improved synthesis of graphene oxide. After they were expanded by microwave, the different morphologies of graphene nanosheets （WS-GO and WZ-GO） were obtained, and another sample of HWS-GO was also got by activating WS-GO. The composition and morphology of all the samples were studied with SEM, FT-IR, while the electrochemical properties of samples were investigated by using electrochemical workstation. The results indicate that the specific capacitance of the WS-GO is 222 F/g and WS-GO has better reversibility, obvious advantages and huge commercial potential.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2013年第4期9-11,15,共4页
Electronic Components And Materials
关键词
超级电容器
石墨烯纳米片
微波
活化
氧化石墨
改进合成
循环伏安法
supercapacitor
graphene nanosheet
microwave
activation
grapheme oxide
improved synthesis
cyclic voltammetry
