Simple fabrication of CoO nanoparticles on N-doped laser-induced graphene for high-performance supercapacitors.

This study demonstrates a simple strategy to fabricate CoO on N-doped laser-induced graphene (CoO-NLIG) based on duplicate laser pyrolysis, enabling the generation of CoO nanoparticles and heteroatom doping in laser-induced graphene (LIG). Morphological analyses reveal the uniform distribution of CoO nanoparticles on the surface of the LIG structure. The modification of NLIG with CoO nanoparticles results in impressive electrochemical performance due to the contributions from electric double-layer capacitance and pseudocapacitance.