Cellulose‐Derived Supercapacitors from the Carbonisation of Filter Paper

ChemistryOpen

Dr. Luyun Jiang⁴  Dr. Geoffrey W. Nelson¹  Dr. Heeyeon Kim³  Dr. I. N. Sim³  Dr. Seong Ok Han² 

[1] Department of Materials, Imperial College, London, UK;E-mail address: 关键词: carbon materials;    carbonisation temperatures;    filter paper;    supercapacitors;   

DOI  :  10.1002/open.201500150

来源: Wiley

【 摘 要 】

Abstract

Advanced carbon materials are important for the next-generation of energy storage apparatus, such as electrochemical capacitors. Here, the physical and electrochemical properties of carbonised filter paper (FP) were investigated. FP is comprised of pure cellulose and is a standardised material. After carbonisation at temperatures ranging from 600 to 1700 °C, FP was contaminant-free, containing only carbon and some oxygenated species, and its primary fibre structure was retained (diameter ≈20–40 μm). The observed enhancement in conductivity of the carbonised FP was correlated with the carbonisation temperature. Electrochemical capacitance in the range of ≈1.8–117 F g⁻¹ was achieved, with FP carbonised at 1500 °C showing the best performance. This high capacitance was stable with >87 % retained after 3000 charge–discharge cycles. These results show that carbonised FP, without the addition of composite materials, exhibits good supercapacitance performance, which competes well with existing electrodes made of carbon-based materials. Furthermore, given the lower cost and renewable source, cellulose-based materials are the more eco-friendly option for energy storage applications.

【 授权许可】

CC BY-NC   
© 2015 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.

Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.