A Bifunctional Electrocatalyst for OER and ORR based on a Cobalt(II) Triazole Pyridine Bis‐[Cobalt(III) Corrole] Complex

As alternative energy sources are essential to reach a climate-neutral economy, hydrogen peroxide (H2O2) as futuristic carrier gains enormous awareness. However, seeking for stable and electrochemically selective H2O2 ORR electrocatalyst is yet challenge, making the design of—ideally—bifunctional catalysts extremely important outmost of interest. In this study, we explore application trimetallic cobalt(II) triazole pyridine bis-[cobalt(III) corrole] complex CoIITP[CoIIIC]2 3 in OER catalysis due its remarkable physicochemical properties, fast charge transfer kinetics, electrochemical reversibility, durability. With nearly 100 % catalytic activity towards two-electron generated H2O2, an onset potential 0.8 V vs RHE cycling stability 50 000 cycles detected. Similarly, promising results obtained when applied catalysis. A relatively low overpotential at 10 mA cm−2 412 mV, Faraday efficiency 98 oxygen, outstanding Tafel slope 64 mV dec−1 combined with superior stability.