Aerogel from fruit biowaste produces ultracapacitors with high energy density and stability
• High performance supercapacitors synthesized from durian and jackfruit biowaste. • Outstanding performance due to large surface area, mesoporous structure and intrinsic nitrogen. • Pyridinic and graphitic n and facile ionic diffusion enable high performance supercapacitance. • Excellent stability, long-term cycling, energy density with pseudo-capacitance.