Insight into the effect of crystalline structure on the oxygen reduction reaction activities of one-dimensional MnO2.

Abstract To investigate the morphology and crystalline structure effect on the oxygen reduction reaction (ORR) electrocatalytic, in this work, α-MnO 2 nanowires, α-MnO 2 nanorods, β-MnO 2 nanowires and β-MnO 2 nanorods have been successfully synthesized via a hydrothermal process, and their microstructures and electrocatalytic activities were investigated for the ORR. Among the four different types of one-dimension (1D) MnO 2 , the α-MnO 2 nanowires exhibited significantly larger electrocatalytic property than the others, which may contribute to the special crystalline structure and larger specific surface area. Graphical abstract Image 1 [ABSTRACT FROM AUTHOR]