Nanotube NiFe hydroxide for efficient oxygen evolution reaction

Abstract

NiFe hydroxide is known as good catalyst for oxygen evolution reaction. However, the low conductivity of the hydroxide limits the performance of the catalyst. In this study, NiFe hydroxide was synthesized in the form of hollow nanotube to solve the conductivity problem. It was confirmed that the synthesized catalyst show better catalyst performance than other morphologies of NiFe hydroxide and IrO$_2$, and that the stability was also better than that of IrO$_2$. As a result of the electrochemical analysis, it was confirmed that it had a larger surface area and better charge transfer than other types of NiFe hydroxide.