Conductive Carbon Microfibers Derived from Wet-Spun Lignin/Nanocellulose Hydrogels

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Conductive Carbon Microfibers Derived from Wet-Spun Lignin/Nanocellulose Hydrogels. / Wang, Ling; Ago, Mariko; Borghei, Maryam; Ishaq, Amal; Papageorgiou, Anastassios C.; Lundahl, Meri; Rojas, Orlando J.

julkaisussa: ACS Sustainable Chemistry and Engineering, Vuosikerta 7, Nro 6, 18.03.2019, s. 6013-6022.

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

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Bibtex - Lataa

@article{19e72ab7c60f434d8ba70eeba6a1a0a3,
title = "Conductive Carbon Microfibers Derived from Wet-Spun Lignin/Nanocellulose Hydrogels",
abstract = "We introduce an eco-friendly process to dramatically simplify carbon microfiber fabrication from biobased materials. The microfibers are first produced by wet-spinning in aqueous calcium chloride solution, which provides rapid coagulation of the hydrogel precursors comprising wood-derived lignin and 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibrils (TOCNF). The thermomechanical performance of the obtained lignin/TOCNF filaments is investigated as a function of cellulose nanofibril orientation (wide angle X-ray scattering (WAXS)), morphology (scanning electron microscopy (SEM)), and density. Following direct carbonization of the filaments at 900 °C, carbon microfibers (CMFs) are obtained with remarkably high yield, up to 41{\%}, at lignin loadings of 70 wt {\%} in the precursor microfibers (compared to 23{\%} yield for those produced in the absence of lignin). Without any thermal stabilization or graphitization steps, the morphology, strength, and flexibility of the CMFs are retained to a large degree compared to those of the respective precursors. The electrical conductivity of the CMFs reach values as high as 103 S cm -1 , making them suitable for microelectrodes, fiber-shaped supercapacitors, and wearable electronics. Overall, the cellulose nanofibrils act as structural elements for fast, inexpensive, and environmentally sound wet-spinning while lignin endows CMFs with high carbon yield and electrical conductivity.",
keywords = "Carbon fibers, Carbonization, Cellulose nanofibrils, Coagulation, Electrical conductivity, Lignin, Wet spinning, SUSPENSIONS, CONVERSION, RHEOLOGY, Wet spinning Coagulation, CELLULOSE NANOFIBRILS, CARBONIZATION, FIBERS, FILAMENTS, FUEL, NANOTUBES, PRECURSORS",
author = "Ling Wang and Mariko Ago and Maryam Borghei and Amal Ishaq and Papageorgiou, {Anastassios C.} and Meri Lundahl and Rojas, {Orlando J.}",
note = "| openaire: EC/H2020/788489/EU//BioELCell",
year = "2019",
month = "3",
day = "18",
doi = "10.1021/acssuschemeng.8b06081",
language = "English",
volume = "7",
pages = "6013--6022",
journal = "ACS Sustainable Chemistry and Engineering",
issn = "2168-0485",
publisher = "AMERICAN CHEMICAL SOCIETY",
number = "6",

}

RIS - Lataa

TY - JOUR

T1 - Conductive Carbon Microfibers Derived from Wet-Spun Lignin/Nanocellulose Hydrogels

AU - Wang, Ling

AU - Ago, Mariko

AU - Borghei, Maryam

AU - Ishaq, Amal

AU - Papageorgiou, Anastassios C.

AU - Lundahl, Meri

AU - Rojas, Orlando J.

N1 - | openaire: EC/H2020/788489/EU//BioELCell

PY - 2019/3/18

Y1 - 2019/3/18

N2 - We introduce an eco-friendly process to dramatically simplify carbon microfiber fabrication from biobased materials. The microfibers are first produced by wet-spinning in aqueous calcium chloride solution, which provides rapid coagulation of the hydrogel precursors comprising wood-derived lignin and 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibrils (TOCNF). The thermomechanical performance of the obtained lignin/TOCNF filaments is investigated as a function of cellulose nanofibril orientation (wide angle X-ray scattering (WAXS)), morphology (scanning electron microscopy (SEM)), and density. Following direct carbonization of the filaments at 900 °C, carbon microfibers (CMFs) are obtained with remarkably high yield, up to 41%, at lignin loadings of 70 wt % in the precursor microfibers (compared to 23% yield for those produced in the absence of lignin). Without any thermal stabilization or graphitization steps, the morphology, strength, and flexibility of the CMFs are retained to a large degree compared to those of the respective precursors. The electrical conductivity of the CMFs reach values as high as 103 S cm -1 , making them suitable for microelectrodes, fiber-shaped supercapacitors, and wearable electronics. Overall, the cellulose nanofibrils act as structural elements for fast, inexpensive, and environmentally sound wet-spinning while lignin endows CMFs with high carbon yield and electrical conductivity.

AB - We introduce an eco-friendly process to dramatically simplify carbon microfiber fabrication from biobased materials. The microfibers are first produced by wet-spinning in aqueous calcium chloride solution, which provides rapid coagulation of the hydrogel precursors comprising wood-derived lignin and 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofibrils (TOCNF). The thermomechanical performance of the obtained lignin/TOCNF filaments is investigated as a function of cellulose nanofibril orientation (wide angle X-ray scattering (WAXS)), morphology (scanning electron microscopy (SEM)), and density. Following direct carbonization of the filaments at 900 °C, carbon microfibers (CMFs) are obtained with remarkably high yield, up to 41%, at lignin loadings of 70 wt % in the precursor microfibers (compared to 23% yield for those produced in the absence of lignin). Without any thermal stabilization or graphitization steps, the morphology, strength, and flexibility of the CMFs are retained to a large degree compared to those of the respective precursors. The electrical conductivity of the CMFs reach values as high as 103 S cm -1 , making them suitable for microelectrodes, fiber-shaped supercapacitors, and wearable electronics. Overall, the cellulose nanofibrils act as structural elements for fast, inexpensive, and environmentally sound wet-spinning while lignin endows CMFs with high carbon yield and electrical conductivity.

KW - Carbon fibers

KW - Carbonization

KW - Cellulose nanofibrils

KW - Coagulation

KW - Electrical conductivity

KW - Lignin

KW - Wet spinning

KW - SUSPENSIONS

KW - CONVERSION

KW - RHEOLOGY

KW - Wet spinning Coagulation

KW - CELLULOSE NANOFIBRILS

KW - CARBONIZATION

KW - FIBERS

KW - FILAMENTS

KW - FUEL

KW - NANOTUBES

KW - PRECURSORS

UR - http://www.scopus.com/inward/record.url?scp=85063064526&partnerID=8YFLogxK

U2 - 10.1021/acssuschemeng.8b06081

DO - 10.1021/acssuschemeng.8b06081

M3 - Article

VL - 7

SP - 6013

EP - 6022

JO - ACS Sustainable Chemistry and Engineering

JF - ACS Sustainable Chemistry and Engineering

SN - 2168-0485

IS - 6

ER -

ID: 32863490