Mo-doped cobalt-manganese layered double hydroxide for oxygen evolution reaction

Mo plays an important role in modulating the electronic structure of layer double hydroxides (LDHs) for enhancing the oxygen evolution reaction (OER) performance. Herein, CoMn2Mo-LDH/NF electrocatalyst was synthesized through one-pot hydrothermal route. The dopant of Mo boosted valence ratio of Co3+/Co2+, thus improving intrinsic catalytic activity of CoMn2Mo-LDH for OER. Besides, CoMn2Mo-LDH/NF only required 242 mV and ran stably more than 24 h at 10 mA/cm2 for OER. Additionally, it maintained long-term stability over 60 h in 1 M KOH at 10 mA/cm2 for water splitting.