Decalcified fish scale-based sponge-like nitrogen-doped porous carbon for lithium-sulfur batteries

A decalcified sponge-like nitrogen-doped porous carbon (DFSC) derived from fish scales has been synthesized via decalcification, pre-carbonization, and KOH activation processes. The synthesized carbon possesses high surface area of 2520.9 m2 g−1, large pore volume of 1.40 cm3 g−1, moderate nitrogen content, and hierarchical porous structure, which was used to prepare DFSC/S composite as cathode material in lithium-sulfur (Li-S) batteries. The...