石墨烯
十二烷基苯
超级电容器
四丁基氢氧化铵
材料科学
氧化物
氧化石墨烯纸
插层(化学)
电解质
无机化学
肺表面活性物质
化学工程
电极
润湿
磺酸盐
电化学
纳米技术
化学
钠
复合材料
物理化学
工程类
冶金
作者
Kai Zhang,Lu Mao,Li Li Zhang,Hardy Sze On Chan,Xin Zhao,Jishan Wu
摘要
A series of surfactant-stabilized graphene materials were prepared by intercalation of graphene oxide (GO) with different surfactants, tetrabutylammonium hydroxide (TBAOH), cetyltrimethylammonium bromide (CTAB) and sodium dodecylbenzene sulfonate (SDBS), followed by reduction using hydrazine. The materials were fully characterized, and the surfactants were found to be successfully intercalated in both GO and the reduced graphene oxide. As well as stabilizing the morphology of single layer or few-layer structure of graphene sheets during reduction, the presence of surfactants in graphene materials can also enhance the wettability of the graphene surface and thus improve its performance as a supercapacitor electrode. When the graphene materials were used as an electrode for a supercapacitor, the highest specific capacitance of 194 F g−1 was obtained from the TBAOH stabilized graphene at a specific current density of 1 A g−1 in 2 M H2SO4 electrolyte.
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