A perovskite oxide with a tunable pore-size derived from a general salt-template strategy as a highly efficient electrocatalyst for the oxygen evolution reaction

The fabrication of a perovskite oxide with a tunable pore-size was implemented by a general inorganic salt-template strategy. As a proof-of-concept, hierarchically porous PrBa 0.5 Sr 0.5 Co 1.5 -Fe 0.5 O 5+ δ (PBSCF) with a surface area of 148 m 2 g −1 was successfully prepared, which exhibited remarkable electrocatalytic performance for the oxygen evolution reaction. A porous perovskite oxide is fabricated by an inorganic salt-template strategy, which exhibits remarkable performance for the oxygen evolution reaction.