Sulfonated graphene oxide with improved ionic performances

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• 作者：Hongying Hou ; Xuehan Hu ; Xianxi Liu ; Wen Hu ; Ruijin Meng ; Lei Li
• 关键词：Graphene oxide ; Sulfonation ; Functional carbon material ; Ion exchange capacity ; Proton conductivity
• 刊名：Ionics
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：21
• 期：7
• 页码：1919-1923
• 全文大小：1,040 KB
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• 作者单位：Hongying Hou (1)
  Xuehan Hu (1)
  Xianxi Liu (2)
  Wen Hu (1)
  Ruijin Meng (1)
  Lei Li (1)
  
  1. Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, China
  2. Faculty of Mechanical and Electronic Engineering, Kunming University of Science and Technology, Kunming, 650093, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Electrochemistry
  Materials Science
  Physical Chemistry
  Condensed Matter
  Renewable Energy Sources
  Electrical Power Generation and Transmission
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1862-0760

文摘

Graphene oxide is well known as a new kind of functional materials because of its super-high specie surface area, mechanical strength, as well as excellent amphipathicity. In this article, graphene oxide was further sulfonated via substitution reaction with diazo salt of sulfanilic in order to endow graphene oxide with better ion exchange capacity and proton conductivity. The microstructure and morphology of the obtained sulfonated graphene oxide were characterized by X-ray diffraction (XRD), Raman spectra, and TEM, while the sulfonation of graphene oxide was confirmed by energy-dispersive X-ray (EDX) and Fourier transform infrared spectroscopy (FTIR) spectra. As expected, ion exchange capacity and proton conductivity of sulfonated graphene oxide increased by about 0.589 and 33.6 times than those of graphene oxide, respectively.