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

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 8.1x10(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).

Automated summary

In this study, Ni-MOF-74 was successfully synthesized and showed promising electrocatalytic properties for methanol oxidation, along with high electrochemical stability.