Bimetallic oxygen electrocatalyst derived from metallocenes doped MOFs

Herein, metallocens (ferrocene, ruthenocene and cobaltocene) were in situ hybridized with two dimensional metal-organic frameworks (MOFs) via an improved inter-diffusion approach. The metallocens@MOFs hybrids were direct carbonized and transformed to Fe(Ru,Co)-Co@C composites. These bimetallic electrocatalysts show remarkable oxygen evolution reaction (OER) activity by taking advantage of the synergetic effect between the binary metals. Among of them, the obtained Fe-Co@C exhibits lower overpotential (320 mV at 10 mA cm(-2)) and satisfactory stability toward OER. The study presents a novel and facile strategy to synthesize low-cost bimetallic catalyst, showing great promise in electrocatalysis of oxygen.

Automated summary

Metallocens were hybridized with two dimensional MOFs via an improved inter-diffusion approach to create bimetallic composites, which showed remarkable activity in the oxygen evolution reaction. This study presents a novel strategy for synthesizing low-cost bimetallic catalysts with great promise in electrocatalysis of oxygen.