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Enhanced electrochemical performance of sulfur-doped laser-induced graphene supercapacitors: Synergistic effects of doping and plasmochemical surface modification
Abstract
This work introduces a novel, scalable methodology for rapidly fabricating sulfur-doped laser-induced graphene with enhanced porosity and wetting characteristics, targeting advanced supercapacitor applications. An infrared laser scribing technique was employed to create a three-dimensional porous graphene network, with in-situ sulfur doping achieved through physical evaporation using powder precursor. A second-pass laser process ensured uniform sulfur integration and optimized graphene structure. Sulfur incorporation facilitated the formation of a hierarchical porous network, significantly improving hydrophilicity and surface chemistry. This modification enhanced ion transport and charge storage mechanisms through synergistic double-layer and pseudo-capacitance effects. Physicochemical characterization revealed a dramatically increased ID/IG ratio post-sulfur doping and plasma treatment, indicating increased crystal plane defects and promising capacitive properties. Systematic optimization of sulfur loading, synthesis temperature, and electrolyte composition yielded remarkable electrochemical performance. The optimized S-doped electrodes achieved a high areal capacitance of 30.18 mF/cm² at 0.08 mA/cm² using a PVA/H₂SO₄ gel electrolyte. Notably, the developed supercapacitors demonstrated mechanical flexibility, maintaining 84.7% of their initial capacitance after 5000 cycles, highlighting the potential for scalable, flexible energy storage technologies.
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Authors (5)
-
Anna Wcisło dr
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach dostępnych w wersji elektronicznej [także online]
- Published in:
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APPLIED SURFACE SCIENCE
ISSN: 0169-4332 - Language:
- English
- Publication year:
- 2025
- Bibliographic description:
- Shahsavarifar S., Jakóbczyk P., Wcisło A., Ryl J., Bogdanowicz R., Enhanced electrochemical performance of sulfur-doped laser-induced graphene supercapacitors: Synergistic effects of doping and plasmochemical surface modification, APPLIED SURFACE SCIENCE, 2025,10.1016/j.apsusc.2025.162478
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.apsusc.2025.162478
- Sources of funding:
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- IDUB
- Verified by:
- Gdańsk University of Technology
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