Metal-organic frameworks-derived carbon modified wood carbon monoliths as three-dimensional self-supported electrodes with boosted electrochemical energy storage performance

•Wood-derived carbon/carbon heterostructure is creatively developed.•Structure optimization, heteroatom doping and property boosting are fulfilled.•Ultrahigh area-normalized specific capacitance of 23.7 F cm−2 is achieved.•Remarkable energy densities are shown for NPCM-900-based two devices.