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Nano Ag4Bi2O5 rods were synthesized by co-precipitation method, in which mixed AgNO3Bi(NO3)3 solution was used as Ag-Bi source and KOH solution as precipitant. The structure, morphology and composition were researched via powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM), etc. Results show that the Ag4Bi2O5 were nanorods crystal with 20-30 nm in width and 200-300 nm in length. Electrochemical measurements indicate that the Ag4Bi2O5 has excellent performance for oxygen reduction reaction (ORR) followed a four-electron transfer pathway in alkaline electrolyte. Moreover, Ag4Bi2O5 was further tested in an assembled zincoxygen (Zn-O2) battery, which discharged up to 1400 h at 10 mA cm −2 . So essentially, the inexpensive and available Ag4Bi2O5 electrocatalyst has superior electro-catalytic activity and good durability.

Preparation of Nano-AgBiO with Co-precipitation Method and Study of Its Application for Oxygen Reduction Reaction