Effect of plasma treatment on electrochemical performance of lignin-based carbon fibers

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Rajendra Babu Kalai Arasi, Azega,1995Chalmers University of Technology, Sweden; Wallenberg Wood Science Center, Sweden,Chalmers tekniska högskola (författare)

Effect of plasma treatment on electrochemical performance of lignin-based carbon fibers

Artikel/kapitelEngelska2023

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2023
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LIBRIS-ID:oai:DiVA.org:ri-66695
https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-66695URI
https://doi.org/10.1016/j.jelechem.2023.117723DOI
https://research.chalmers.se/publication/537504URI

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Språk:engelska
Sammanfattning på:engelska

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Authors acknowledge the Wallenberg Wood Science Centre’s (WWSC) project 4.1.4 financially supported by the Knut and Alice Wallenberg Foundation of Sweden and the support of the European Research Council (ERC) under the European Union’s Horizon 2020 Program EU Horizon 2020 project GreEnergy for this work.
The abundant and renewable nature of lignin obtained from wood renders it as a sustainable carbon resource for energy storage applications. However, their environmentally unfavorable processing conditions and limited energy storage performance prohibit the use of lignin-based carbon materials' use as supercapacitor electrodes. The material's properties require advancement to overcome the limitation of low specific capacitances. In this study, we report on the impact on the electrochemical performance of inherently hydrophobic lignin-based carbon fibers (LCF) by subjecting them to a mild plasma treatment. The electrode’s capacitance was thus increased by 20%, with better rate capability and energy-power performance (11 Wh/kg and 0.8 kW/kg) in the KOH electrolyte. The quantified improvements were attributed to the capacitive functional groups, and enhanced surface wettability, which increased ion accessibility to active surface area improving charge-transfer ability to the surface with more additional functional groups. Remarkably, the selected plasma conditions introduced mostly desirable functional groups that limited any parasitic faradaic reactions prone to affect the device's long-term cycling stability and self-discharge characteristics. Furthermore, the impact of different inherent and introduced oxygen surface functional groups, including COO−, COH, CO, and CO, on the capacitive performance of these fibers at different device conditions (such as cycling and electrochemical activation) was investigated in different aqueous electrolytes. To ensure environmental favorability, the electrospinning of lignin fibers was conducted using a high molecular fraction of lignin without the inclusion of any fossil-based co-spinning polymers.

Ämnesord och genrebeteckningar

TEKNIK OCH TEKNOLOGIER Materialteknik Pappers-, massa- och fiberteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Paper, Pulp and Fiber Technology hsv//eng
NATURVETENSKAP Kemi Annan kemi hsv//swe
NATURAL SCIENCES Chemical Sciences Other Chemistry Topics hsv//eng
Supercapacitor
Lignin
Carbon fiber
Wettability
Surface functional groups

Biuppslag (personer, institutioner, konferenser, titlar ...)

Haque, Mohammad Mazharul,1984Chalmers University of Technology, Sweden,Chalmers tekniska högskola(Swepub:cth)mazharul (författare)
Li, Qi,1990Smoltek Hydrogen AB, Sweden(Swepub:cth)qili (författare)
Hosseinaei, OmidRISE,Material- och ytdesign,RISE Research Institutes of Sweden(Swepub:ri)omidho@ri.se (författare)
Theliander, Hans,1956Chalmers University of Technology, Sweden; Wallenberg Wood Science Center, Sweden,Chalmers tekniska högskola(Swepub:cth)hanst (författare)
Enoksson, Peter,1957Chalmers University of Technology, Sweden; Enoaviatech AB, Sweden,Chalmers tekniska högskola(Swepub:cth)enok (författare)
Lundgren, Per,1968Chalmers University of Technology, Sweden,Chalmers tekniska högskola(Swepub:cth)boris (författare)
Chalmers University of Technology, Sweden; Wallenberg Wood Science Center, SwedenChalmers tekniska högskola (creator_code:org_t)

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Ingår i:Journal of Electroanalytical Chemistry9461572-6657

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Av författaren/redakt...: Rajendra Babu Ka ...; Haque, Mohammad ...; Li, Qi, 1990; Hosseinaei, Omid; Theliander, Hans ...; Enoksson, Peter, ...; visa fler...; Lundgren, Per, 1 ...; visa färre...

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TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Pappers massa oc ...

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Av lärosätet: RISE; Chalmers tekniska högskola

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