Journal
DESALINATION
Volume 428, Issue -, Pages 40-49Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.desal.2017.11.019
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Funding
- European Union's H2020 Research and Innovation Programme [696656]
- European Union's H2020 Research and Innovation Programme [696656]
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Electro-spun carbon fibres doped with very high nitrogen concentrations (19-21 wt%) are obtained operating carbonisation at low temperature (500 degrees C). The as-synthesised fibres are evaluated as electrode materials for the electrochemical desalination of water. The effect of the enrichment of the nitrogen doped carbon fibres with thermally reduced graphene oxide is also investigated. The fibrous electrodes are able to remove amazing amounts of NaCl (17.0-27.6 mg/g) from a salty solution with an initial concentration of 585 mg/L. The nitrogen doping, which dramatically improves the wettability, plays a crucial role in determining the outstanding electrosorption capacities of the fibres. It allows fully profiting of the more favourable pore size distribution in the graphene-enriched fibres, endowed with higher conductivity and capacitance, for the obtainment of unprecedented electro-sorption capacities via an extremely simple synthesis process, with no need of activation treatments.
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