B-site substitution in NaCo_{1−2<i>x</i>}Fe_<i>x</i>Ni_<i>x</i>F₃ perovskites for efficient oxygen evolution

Abstract

A series of perovskite fluoride NaCo 1−2 x Fe x Ni x F 3 can be fabricated via a simple hydrothermal process. The prepared NaCo 0.4 Fe 0.3 Ni 0.3 F 3 exhibits a low overpotential of 265 mV at 10 mA cm −2 and outstanding cycling stability for OER.