Abstract
To obtain a stable and active catalyst for the oxygen evolution reaction (OER) in polymer electrolyte membrane water electrolysis (PEMWE), a microporous RuO2@IrOx core–shell was synthesized using a polydopamine (PDA) coating and a NaCl filler method. A durable IrOx shell was homogeneously formed on the surface of the RuO2 core via impregnation of the PDA coating, which improved the catalytic stability. The NaCl filler created micropores within the nanostructures, increasing the number of active catalytic sites. The strong interaction between the RuO2 core and protective IrOx shell, along with the micropores, significantly improved OER activity, showing an overpotential of 182 mV at 10 mA cm−2. Furthermore, a PEMWE exhibited excellent performance, achieving a current density of 1 A cm−2 at a cell voltage of 1.57 V. These findings provide valuable insights into the potential of RuO2@IrOx as a robust and efficient catalyst for green hydrogen production.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call