Electrocatalytic Oxidation of Methanol over An Electrode with Ni‐MOF‐74 Catalyst

Abstract

Abstract Developing non‐noble metal catalysts for methanol oxidation in fuel cells is of importance. In this work, Ni‐MOF‐74 was synthesized through a simple solvothermal method and fully characterized. The as‐made Ni‐MOF‐74 modified carbon paste electrode (Ni‐MOF‐74/CPE) was applied for methanol electrooxidation reaction in 0.1 M NaOH solution. Ni‐MOF‐74 had high electrochemical stability and exhibited good electrocatalytic property for methanol oxidation, a mechanism for the reaction was proposed, the current density increases impressively on Ni‐MOF‐74/CPE compared with carbon paste electrode, and a really high catalytic rate constant (k cat ) of 8.1×10 5 cm 3 ⋅ mol −1 ⋅ s −1 was obtained in this work. The given results indicate that Ni‐MOF‐74 can be a promising candidate of electrocatalysts for direct methanol fuel cells (DMFCs).