N-GCSs was synthesized from the unripe Prunus persica by direct hydrothermal method.
The resulting N-GCSs-2 exhibit an excellent graphitization with 9.33% of nitrogen.
N-GCSs-2 provide high Cs of 176 F g−1 at current density of 0.1 A g−1 in 1 M H2SO4.
N-GCSs-2 have high capacitance retention and 20% capacity growth after 2000 cycles.
First time, N-GCSs resulted from peach via green route for flexible supercapacitors.