期刊
APPLIED SURFACE SCIENCE
卷 360, 期 -, 页码 213-223出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2015.11.006
关键词
Graphene; Surfactant; Oxidizing agent; Electrochemical exfoliation; Supercapacitor
类别
资金
- Putra Grant IPB [GP-IPB/2014/9440701]
- High Impact Research Grant from the Ministry of Higher Education of Malaysia [UM.C/625/1/HIR/MOHE/SC/21]
A facile production of graphene via electro-exfoliation is demonstrated using different types of oxidizing agent (HNO3, NaNO3, H2SO4 and H2O2) in the presence of sodium dodecylbenzenesulfonate as a surfactant. Different types of surfactant-oxidizing agent solutions in different concentrations significantly influenced the electrochemical exfoliation of graphite rod. The surface morphology, layer thickness and defects of the as-produced graphene are further evaluated. Additionally, the as-produced graphene is fabricated as a supercapacitor electrode via direct vacuum filtration. Nylon membrane and polymer gel, each containing 2.0 M of potassium hydroxide, are utilized to investigate the influence of the electrolyte type on the capacitance performance. Upon 1000 charge/discharge cycles, the nylon membrane electrolyte recorded capacitance retention of 94%, whereas the polymer gel electrolyte recorded an impressive capacitance retention that exceeded 100%. The potential of the fabricated supercapacitor for real applications is manifested by its ability to light up a light-emitting diode upon charging. (C) 2015 Elsevier B.V. All rights reserved.
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