Amorphous cobalt sulfide/N-doped carbon core/shell nanoparticles as an anode material for potassium-ion storage

Transition metal sulfides (TMSs), owing to their high theoretical specific capacity, unique chemical and physical properties, were established as promising anode materials for potassium-ion batteries. However, the large volume expansion of the well-crystallized TMSs has an important influence on the structural stability during cycling. Herein, amorphous cobalt sulfide/N-doped carbon core/shell nanoparticles (ACSNPs) are obtained and work as...