Nitrogen-doped chain-like carbon nanospheres with tunable interlayer distance for superior pseudocapacitance-dominated zinc- and potassium-ion storage

Carbon-based materials have attracted extensive interest in metal-ion batteries owing to their low cost, good conductivity, and environmental friendliness. The practical application of graphite materials is associated with trade-offs in cyclability and energy density due to the sluggish kinetics. Herein, nitrogen-doped chain-like carbon nanospheres (NCN) with expanded interlayer distance are effectively fabricated by annealing carbon derived...