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Cellulose-Derived Supercapacitors from the Carbonisation of Filter Paper.

Jiang L, Nelson GW, Kim H, Sim IN, Han SO, Foord JS - ChemistryOpen (2015)

Bottom Line: Electrochemical capacitance in the range of ≈1.8-117 F g(-1) was achieved, with FP carbonised at 1500 °C showing the best performance.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry, University of Oxford South Parks Rd, Oxford, OX1 3TA, UK.

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.

No MeSH data available.


Scanning electron microscopy (SEM) images of filter paper (FP) a) without treatment, and with heat-treatment at b) 600, c) 1000, d) 1300, e) 1500 and f) 1700 °C.
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fig01: Scanning electron microscopy (SEM) images of filter paper (FP) a) without treatment, and with heat-treatment at b) 600, c) 1000, d) 1300, e) 1500 and f) 1700 °C.

Mentions: The morphology of FP samples carbonised at 600, 1000, 1300, 1500 and 1700 °C were characterised by scanning electron microscopy (SEM) as shown in Figure 1. Carbon microfibres 20 to 40 μm in diameter comprise all samples. The carbonisation temperature did not change the primary fibre structure significantly, although slight heat-shrinkage was observed at higher temperatures. Sample conductivity was measured using conductive atomic force microscopy (AFM) with bias potential of −1 V.


Cellulose-Derived Supercapacitors from the Carbonisation of Filter Paper.

Jiang L, Nelson GW, Kim H, Sim IN, Han SO, Foord JS - ChemistryOpen (2015)

Scanning electron microscopy (SEM) images of filter paper (FP) a) without treatment, and with heat-treatment at b) 600, c) 1000, d) 1300, e) 1500 and f) 1700 °C.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4608524&req=5

fig01: Scanning electron microscopy (SEM) images of filter paper (FP) a) without treatment, and with heat-treatment at b) 600, c) 1000, d) 1300, e) 1500 and f) 1700 °C.
Mentions: The morphology of FP samples carbonised at 600, 1000, 1300, 1500 and 1700 °C were characterised by scanning electron microscopy (SEM) as shown in Figure 1. Carbon microfibres 20 to 40 μm in diameter comprise all samples. The carbonisation temperature did not change the primary fibre structure significantly, although slight heat-shrinkage was observed at higher temperatures. Sample conductivity was measured using conductive atomic force microscopy (AFM) with bias potential of −1 V.

Bottom Line: Electrochemical capacitance in the range of ≈1.8-117 F g(-1) was achieved, with FP carbonised at 1500 °C showing the best performance.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry, University of Oxford South Parks Rd, Oxford, OX1 3TA, UK.

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.

No MeSH data available.