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Utilizing native lignin as redox-active material in conductive wood for electronic and energy storage applications.
- Source :
- Journal of Materials Chemistry A; 8/7/2022, Vol. 10 Issue 29, p15677-15688, 12p
- Publication Year :
- 2022
-
Abstract
- Nanostructured wood veneer with added electroactive functionality combines structural and functional properties into eco-friendly, low-cost nanocomposites for electronics and energy technologies. Here, we report novel conducting polymer-impregnated wood veneer electrodes where the native lignin is preserved, but functionalized for redox activity and used as an active component. The resulting electrodes display a well-preserved structure, redox activity, and high conductivity. Wood samples were sodium sulfite-treated under neutral conditions at 165 °C, followed by the tailored distribution of PEDOT:PSS, not previously used for this purpose. The mild sulfite process introduces sulfonic acid groups inside the nanostructured cell wall, facilitating electrostatic interaction on a molecular level between the residual lignin and PEDOT. The electrodes exhibit a conductivity of up to 203 S m<superscript>−1</superscript> and a specific pseudo-capacitance of up to 38 mF cm<superscript>−2</superscript>, with a capacitive contribution from PEDOT:PSS and a faradaic component originating from lignin. We also demonstrate an asymmetric wood pseudo-capacitor reaching a specific capacitance of 22.9 mF cm<superscript>−2</superscript> at 1.2 mA cm<superscript>−2</superscript> current density. This new wood composite design and preparation scheme will support the development of wood-based materials for use in electronics and energy storage. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507488
- Volume :
- 10
- Issue :
- 29
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry A
- Publication Type :
- Academic Journal
- Accession number :
- 158260852
- Full Text :
- https://doi.org/10.1039/d1ta10366k