Preparation of MWCNTs-Graphene-Cellulose Fiber with Ionic Liquids

Document identifier: oai:DiVA.org:ltu-77260
Access full text here:10.1021/acssuschemeng.9b05489
Keyword: Engineering and Technology, Mechanical Engineering, Energy Engineering, Teknik och teknologier, Maskinteknik, Energiteknik, Conductive cellulose fiber, Carbon nanotubes, Graphene Ionic liquids, Wet spinning, Molecular dynamic simulation
Publication year: 2019
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Abstract:

The conductive multiwalled carbon nanotubes (MWCNTs)-graphene sheets (rGOs)-cellulose fiber was prepared with an eco-friendly wet-spinning method in which ionic liquid (IL) was used as both green solvent and dispersant. It was found that the selected IL 1-ethyl-3-methylimidazolium diethyl phosphate (EmimDep) shows remarkable capacities for dissolving cellulose and dispersing MWCNTs, and the synergistic effect of MWCNTs, rGOs, and cellulose results in a high electrical conductivity of 1195 S/m of MWCNTs-rGOs-cellulose fibers. Macropores and the double-layer structure of MWCNTs and rGOs can be observed by SEM in the studied fibers, and the number of macropores decreased with increasing rGOs amount, which is consistent with the result of the specific surface area. In addition, the prepared MWCNTs-rGOs-cellulose fibers present a nearly perfect electrical double-layer structure. The MWCNTs-rGOs-cellulose fiber with a mass ratio of 2:3:1 shows the best performance as the electrode candidate, with an electrical conductivity of 1195 S/m, specific capacitance of 597 mF/cm2, and specific surface area of 91 m2/g. Furthermore, the results from the molecular dynamics (MD) simulation evidenced that EmimDep can disperse CNTs effectively at 363.15 K, 1 atm compared to rGOs; the synergy effect of CNT and rGO exhibit great potential to enhance the dispersion than each individual component.

Authors

Yanrong Liu

Luleå tekniska universitet; Energivetenskap; CAS Key Laboratory of Green Process and Engineering, Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy
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Yanlei Wang

CAS Key Laboratory of Green Process and Engineering, Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Zhongguancun, Haidian District,
Other publications >>

Nie Yi

CAS Key Laboratory of Green Process and Engineering, Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Zhongguancun, Haidian District,
Other publications >>

Chenlu Wang

CAS Key Laboratory of Green Process and Engineering, Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Zhongguancun, Haidian District,
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Xiaoyan Ji

Luleå tekniska universitet; Energivetenskap
Other publications >>

Zhou Le

CAS Key Laboratory of Green Process and Engineering, Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Zhongguancun, Haidian District,
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Fengjiao Pan

CAS Key Laboratory of Green Process and Engineering, Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Zhongguancun, Haidian District,
Other publications >>

Zhang Suojiang

CAS Key Laboratory of Green Process and Engineering, Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Zhongguancun, Haidian District,
Other publications >>

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        identifier: oai:DiVA.org:ltu-77260
        datestamp: 2021-04-19T12:41:14Z
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                recordCreationDate: 2019-12-27
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                http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-77260
                10.1021/acssuschemeng.9b05489
                2-s2.0-85076248677
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                    lang: eng
                title: Preparation of MWCNTs-Graphene-Cellulose Fiber with Ionic Liquids
            abstract: 
The conductive multiwalled carbon nanotubes (MWCNTs)-graphene sheets (rGOs)-cellulose fiber was prepared with an eco-friendly wet-spinning method in which ionic liquid (IL) was used as both green solvent and dispersant. It was found that the selected IL 1-ethyl-3-methylimidazolium diethyl phosphate (EmimDep) shows remarkable capacities for dissolving cellulose and dispersing MWCNTs and the synergistic effect of MWCNTs rGOs and cellulose results in a high electrical conductivity of 1195 S/m of MWCNTs-rGOs-cellulose fibers. Macropores and the double-layer structure of MWCNTs and rGOs can be observed by SEM in the studied fibers and the number of macropores decreased with increasing rGOs amount which is consistent with the result of the specific surface area. In addition the prepared MWCNTs-rGOs-cellulose fibers present a nearly perfect electrical double-layer structure. The MWCNTs-rGOs-cellulose fiber with a mass ratio of 2:3:1 shows the best performance as the electrode candidate with an electrical conductivity of 1195 S/m specific capacitance of 597 mF/cm2 and specific surface area of 91 m2/g. Furthermore the results from the molecular dynamics (MD) simulation evidenced that EmimDep can disperse CNTs effectively at 363.15 K 1 atm compared to rGOs; the synergy effect of CNT and rGO exhibit great potential to enhance the dispersion than each individual component.

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                        lang: eng
                        authority: uka.se
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                        Engineering and Technology
                        Mechanical Engineering
                        Energy Engineering
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                        lang: swe
                        authority: uka.se
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                        Teknik och teknologier
                        Maskinteknik
                        Energiteknik
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                    topic: Conductive cellulose fiber
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                    topic: Carbon nanotubes
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                    topic: Graphene Ionic liquids
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                        Energivetenskap
                        CAS Key Laboratory of Green Process and Engineering Beijing Key Laboratory of Ionic Liquids Clean Process State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Zhongguancun Haidian District Beijing People’s Republic of China
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