Imperial College London
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ProfessorMagdaTitirici

Faculty of Engineering, Department of Chemical Engineering

Chair in Sustainable Energy Materials
 
 
 
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Contact

 

+44 (0)20 7594 5601m.titirici

 
 
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Location

 

ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Schlee:2019:10.1016/j.carbon.2019.01.035,
author = {Schlee, P and Hosseinaei, O and Baker, D and Landmér, A and Tomani, P and Mostazo-López, MJ and Cazorla-Amorós, D and Herou, S and Titirici, MM},
doi = {10.1016/j.carbon.2019.01.035},
journal = {Carbon},
pages = {470--480},
title = {From Waste to Wealth: From Kraft Lignin to Free-standing Supercapacitors},
url = {http://dx.doi.org/10.1016/j.carbon.2019.01.035},
volume = {145},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - © 2019 Elsevier Ltd  Pure eucalyptus Kraft lignin derived carbon fiber mats were produced based on a model workflow. It covers the preparation and characterization of the lignin precursor and the carbon materials and its testing in the final application (supercapacitor). Sequential solvent extraction was employed to produce a eucalyptus Kraft lignin precursor which could be electrospun into lignin fibers without any additives. The fiber formation from low molecular weight lignin is assigned to strong intermolecular interactions via hydrogen bonding and π-π-stacking between individual lignin macromolecules which gives rise to association complexes in the electrospinning solution. By stabilization in air, carbonization in N 2 and an activation step in CO 2 , free-standing microporous carbon fiber mats could be produced. These fiber mats possess mainly basic oxygen functional groups which proved to be beneficial when tested as free-standing electrodes in symmetric supercapacitors. Consequently, the CO 2 -activated fiber mats showed a high specific gravimetric capacitance of 155 F/g at 0.1 A/g, excellent rate capability with 113 F/g at 250 A/g and good capacitance retention of 94% after 6000 cycles when tested in 6 M KOH electrolyte. Therefore, we conclude that lignin itself is a promising precursor to produce microporous, oxygen functionalized carbon fibers serving as free-standing electrodes in aqueous supercapacitors.
AU  - Schlee,P
AU  - Hosseinaei,O
AU  - Baker,D
AU  - Landmér,A
AU  - Tomani,P
AU  - Mostazo-López,MJ
AU  - Cazorla-Amorós,D
AU  - Herou,S
AU  - Titirici,MM
DO  - 10.1016/j.carbon.2019.01.035
EP  - 480
PY  - 2019///
SN  - 0008-6223
SP  - 470
TI  - From Waste to Wealth: From Kraft Lignin to Free-standing Supercapacitors
T2  - Carbon
UR  - http://dx.doi.org/10.1016/j.carbon.2019.01.035
VL  - 145
ER  -
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