No abstract

Cobalt-doped MoS2 nanosheets were prepared via a facile hydrothermal method, exhibiting bifunctional activities of hydrogen and oxygen evolution reactions in both acidic and alkaline media. Cobalt doping not only improves the conductivity, decreasing the hydrogen adsorption free energy of MoS2 for HER, but also contributes catalytic active sites for OER.

Co/CoO nanoparticles immobilized on Co-N-doped carbon were successfully developed using shrimp-shell derived N-doped carbon nanodots as precursors by a combined approach of polymerization and pyrolysis, as electrocatalysts exhibiting trifunctional catalytic activities toward oxygen reduction, oxygen evolution and hydrogen evolution reactions and high performance in rechargeable zinc-air batteries.