“…26,[28][29][30] Consequently, carbon materials derived from biomass (including hemp, 8 cattle bone, 12 ginkgo leaves, 31 honeysuckle, 23 wheat stalk, 32 bamboo pulps, 33 peat moss, 34 and rice husk, 35 and cotton 36 ) by pyrolysis/ activation process as electrodes for SCs and LIBs have been explored. In addition, due to the variety of microstructures of natural biomass, the as prepared carbon materials can exhibit different structures, 37,38 which can offer favorable capacitance, high rate capability and long cycling life. For example, Feng et al produced nitrogen-doped porous carbon akes through using human hair as precursor, which can display high specic capacitance of 340 F g À1 at 1 A g À1 and excellent cycling stability with capacitance retention of 98% aer 20 000 cycles.…”