Comparative Study of POMs Decorated MOFs and LDHs as Precatalysts for Electrochemical Oxygen Evolution Reaction

ABSTRACT To explore the effects of polyoxometalates modification on layered double hydroxides (LDHs) and metal‐organic frameworks (MOFs), we prepared the H 5 PW 10 V 2 O 40 ‐modified CoFe‐LDH and CoFe‐MOF composites via solvothermal method. Notably, the MOF/POM composite achieves a lower overpotential of 340 mV at 1 A·cm −2 in alkaline media and more excellent stability of a voltage of 1.90 V at 1 A·cm −2 for over 800 h in the anion exchange membrane water electrolyzer than the LDH/POM, benefiting from stronger electronic interaction, and the lower potential for active‐phase formation indicates faster catalytic activation. This work compares the effects of polyoxometalates on LDHs and MOFs, clarifying their differences.