Open AccessCellulose‐Derived Supercapacitors from the Carbonisation of Filter Paper
Author(s) -
Jiang Luyun,
Nelson Geoffrey W.,
Kim Heeyeon,
Sim I. N.,
Han Seong Ok,
Foord John S.
Publication year - 2015
Publication title -
chemistryopen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 29
ISSN - 2191-1363
DOI - 10.1002/open.201500150
Subject(s) - supercapacitor , cellulose , materials science , polymer science , nanotechnology , filter (signal processing) , chemical engineering , chemistry , capacitance , engineering , electrode , electrical engineering
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.