Upcycling sawdust into sustainable binder-free nitrogen-doped carbon nanofiber electrodes for high energy density supercapacitors

Key Points

• The aim is to transform pinewood sawdust into nitrogen-doped carbon nanofibers for use in high-energy supercapacitors.
• Converted pinewood sawdust waste into nitrogen-doped carbon nanofibers (N-CNFs).
• Evaluated the capacitive performance of N-CNFs in supercapacitors.
• Tested stability over 4000 charge-discharge cycles.
• Achieved a capacitance of 1280 F g−1.
• Demonstrated 100% stability over 4000 cycles.