Synchronously boosting gravimetric and volumetric performance: Biomass-derived ternary-doped microporous carbon nanosheet electrodes for supercapacitors

Ternary-doped microporous carbon nanosheet (MPCNS) has been efficiently prepared via treating fish skin with KOH. The unique 2D porous nanosheet structure, micropore-dominate porosity, rich surface heteroatoms and rational compacting density endow the electrode with both high gravimetric and volumetric capacitive performance.288