Boosting oxygen reduction/evolution reaction activities with layered perovskite catalysts

© The Royal Society of Chemistry 2016. Layered PrBaMn2O5+d (H-PBM) was simply prepared by annealing pristine Pr0.5Ba0.5MnO3-d in H2. The oxygen reduction/evolution reaction activities are remarkably enhanced by employing H-PBM. The improvement can be ascribed to the introduction of additional oxygen vacancies, an optimized eg filling of Mn ions, and the facile incorporation of oxygen into layered H-PBM