Perovskite-type La0.8Sr0.2Co0.8Fe0.2O3 with uniform dispersion on N-doped reduced graphene oxide as an efficient bi-functional Li–O2 battery cathode

Abstract

A composite cathode including N-rGO with homogeneously dispersed perovskite La_0.8Sr_0.2Co_0.8Fe_0.2O₃ on the surface is studied. Li–O₂ batteries with LSCF@N-rGO cathode show better performance than those with LSCF-SP or N-rGO cathode. EIS and morphology analysis indicate that LSCF is beneficial to remold the shape of Li₂O₂ and catalyze the decomposition of Li₂O₂.