Dataset Information

Enhancing electrochemical performance of carbon fiber with lignin for flexible supercapacitors in PVA/H₃PO₄ matrix.

ABSTRACT: Lignin is an unlimited resource of an aromatic natural polymer useful for multiple applications, though its use remains limited due to the lack of technology developments. The introduction of lignin as coating of fibers and textile for composites is being recently studied with very promising results. Here, commercial woven carbon fibers (WCFs) have been superficially modified following an easy approach to introduce lignin and carbonize it to enhance the electrochemical performance of the fibers. The modified carbon fibers containing lignin were tested as electrodes using KCl 3 M as electrolyte, reaching 5 F/g at 10 mVs^-1. A symmetric supercapacitor was fabricated using these electrodes, and a proof of concept based on a red and yellow light-emitting diode (LED) powered on and a bending test were done. The supercapacitor was able to recover 99% of its capacitance when returned to its original unbent position.

SUBMITTER: Munoz BK

PROVIDER: S-EPMC11301100 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature

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Enhancing electrochemical performance of carbon fiber with lignin for flexible supercapacitors in PVA/H<sub>3</sub>PO<sub>4</sub> matrix.

Muñoz Bianca K BK Serroukh Ilias I Sánchez María M Ureña Alejandro A

iScience 20240702 8

Lignin is an unlimited resource of an aromatic natural polymer useful for multiple applications, though its use remains limited due to the lack of technology developments. The introduction of lignin as coating of fibers and textile for composites is being recently studied with very promising results. Here, commercial woven carbon fibers (WCFs) have been superficially modified following an easy approach to introduce lignin and carbonize it to enhance the electrochemical performance of the fibers. ...[more]

PMID: 39108739

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Project description:Flexible electrochemical supercapacitors (FESCs) are emerging as innovative energy storage systems, characterized by their stable performance, long cycle life, and portability/foldability. Crucial components of FESCs, such as electrodes and efficient electrolytes, have become the focus of extensive research. Herein, we examine deep eutectic solvent (DES)-based polymer gel systems for their cost-effective accessibility, simple synthesis, excellent biocompatibility, and exceptional thermal and electrochemical stability. We used a mixture a DES, LiClO4-2-Oxazolidinone as the electroactive species, and a polymer, either polyvinyl alcohol (PVA) or polyacrylamide (PAAM) as a redox additive/plasticizer. This combination facilitates a unique ion-transport process, enhancing the overall electrochemical performance of the polymer gel electrolyte. We manufactured and used LiClO4-2-Oxazolidinone (LO), polyvinyl alcohol-LiClO4-2-Oxazolidinone (PVA-LO), and polyacrylamide-LiClO4-2-Oxazolidinone (PAAM-LO) electrolytes to synthesize an MnO2 symmetric FESC. To evaluate their performance, we analyzed the MnO2 symmetric FESC using various electrolytes with cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS). The FESC featuring the PVA-LO electrolyte demonstrated superior electrochemical and mechanical performances. This solid-state MnO2 symmetric FESC exhibited a specific capacitance of 121.6 F/g within a potential window of 2.4 V. Due to the excellent ionic conductivity and the wide electrochemical operating voltage range of the PVA-LO electrolyte, a high energy density of 97.3 Wh/kg at 1200 W/kg, and a long-lasting energy storage system (89.7% capacitance retention after 5000 cycles of GCD at 2 A/g) are feasibly achieved. For practical applications, we employed the MnO2 symmetric FESCs with the PVA-LO electrolyte to power a digital watch and a light-emitting diode, further demonstrating their real-world utility.

Dataset Information

Enhancing electrochemical performance of carbon fiber with lignin for flexible supercapacitors in PVA/H₃PO₄ matrix.

Publications

Enhancing electrochemical performance of carbon fiber with lignin for flexible supercapacitors in PVA/H<sub>3</sub>PO<sub>4</sub> matrix.

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Enhancing electrochemical performance of carbon fiber with lignin for flexible supercapacitors in PVA/H3PO4 matrix.

Publications

Enhancing electrochemical performance of carbon fiber with lignin for flexible supercapacitors in PVA/H<sub>3</sub>PO<sub>4</sub> matrix.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

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Enhancing electrochemical performance of carbon fiber with lignin for flexible supercapacitors in PVA/H₃PO₄ matrix.