Preparation of activated carbon paper by a novel method and application as high-performance supercapacitors

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• 作者：Yongfu Qiu ; Haifeng Dang ; Zhiyu Cheng ; Xiuzhen Lin ; Lishen Wang ; Hongbo Fan…
• 关键词：Supercapacitor ; Carbon paper ; Gel electrolyte ; Nanomaterials
• 刊名：Ionics
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：22
• 期：4
• 页码：529-534
• 全文大小：773 KB
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• 作者单位：Yongfu Qiu (1)
  Haifeng Dang (1)
  Zhiyu Cheng (1)
  Xiuzhen Lin (1)
  Lishen Wang (1)
  Hongbo Fan (1)
  Ruwei Wang (2)
  
  1. College of Chemistry and Environmental Engineering, Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, Dongguan University of Technology, Dongguan, Guangdong, 523808, People’s Republic of China
  2. CAS Key Laboratory of Crust-Mantle and the Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui, People’s Republic of 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

In this paper, the commercial carbon papers were firstly treated by potassium dichromate lotion. Their surfaces became rougher and specific surface areas were enlarged. Accordingly, their surface hydrophilicity were enhanced due to the intake of hydrophilic groups such as hydroxyl (–OH), carbonyl (>C=O), and carboxyl (–COOH), and they act as strong polar sites to absorb water molecules. Supercapacitors were then constructed with the treated carbon paper as electrode and PVA-H₃PO₄ gel as electrolyte, and they provided high areal capacitances, high-rate capability, long-life cycle, and low resistance due to the synergistic effect of enlarged specific surface area and enhanced surface hydrophilicity.