Effective approaches to co-dope lignin based concave shaped carbon nanofibers with multiple elements for supercapacitors
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Summary
This summary is machine-generated.Researchers developed novel nitrogen, sulfur, and zinc-doped lignin-based carbon nanofibers (LCNF) for sustainable supercapacitors. These advanced LCNF electrodes demonstrate superior performance and stability for energy storage applications.
Area Of Science
- Materials Science
- Electrochemistry
- Sustainable Energy
Background
- Lignin valorization for sustainable materials is crucial.
- Lignin-based carbon nanofibers (LCNF) show promise for supercapacitors but suffer from performance limitations due to structural heterogeneity.
- Developing high-performance LCNF requires advanced fabrication and doping strategies.
Purpose Of The Study
- To synthesize flexible and porous LCNF simultaneously doped with nitrogen (N), sulfur (S), and zinc (Zn).
- To evaluate the electrochemical performance of these co-doped LCNF as electrode materials for supercapacitors.
- To demonstrate a sustainable and high-value utilization of lignin for advanced energy storage.
Main Methods
- Electrostatic spinning of lignin precursor solutions.
- Controlled carbonization of electrospun fibers.
- Simultaneous doping with N, S, and Zn elements.
- Electrochemical characterization using three-electrode and two-electrode systems.
Main Results
- Successfully synthesized flexible, porous LCNF co-doped with N, S, and Zn.
- Optimized L-NS20-Zn15 fibers achieved a specific capacitance of 328.6 F g<sup>-1</sup> (three-electrode) and 46.8 F g<sup>-1</sup> (supercapacitor).
- The supercapacitor demonstrated an energy density of 25.8 Wh kg<sup>-1</sup> at 200 W kg<sup>-1</sup> and 86% capacitance retention after 3000 cycles.
Conclusions
- Co-doped LCNF exhibit significantly enhanced electrochemical performance compared to undoped counterparts.
- The developed material offers a sustainable and efficient solution for high-performance supercapacitors.
- This work highlights the potential of lignin-derived materials in next-generation energy storage devices.
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