| 초록 |
Considerable efforts have been devoted to the developing and fabrication of low-cost, precious metal-free electrocatalysts with high performance for the storage of renewable energies. Perovskite, due to its structural and compositional flexibility as well as high intrinsic catalytic activity, has been attracting lots of attentions. Perovskites with large particle sizes synthesized via traditional synthesis routes are suffering from the low mass activities. In this work, double-perovskite PrBa0.5Sr0.5Co1.5Fe0.5O5+δ mesoporous nanofiber (PBSCF-F) was prepared via an electrospinng process, which exhibited uniform diameter and high surface areas (near 7.7 times than powders calcined at same temperature), greatly enhancing both of the oxygen reduction reaction and oxygen evolution reaction performance. Benefiting from the unique morphological and superior bifunctional activities, PBSCF-F exhibited remarkable cell performance and exceptionally high stability for hybrid Li–air battery. |
