Evaluating the electrocatalytic activity of flower-like Co-MOF/CNT nanocomposites for methanol oxidation in basic electrolytes

Abstract

A flower-like structure of cobalt-based metal–organic framework/CNTs composites is prepared using a facile and fast ultrasonication method. The Co-MOF50%CNTs nanocomposite exhibits a unique current density oxidation peak of 35 mA cm−2 due to a synergistic effect between the Co-MOF and the CNTs.

Development of Membrane Electrode Assembly with Double-Catalytic Layer for Micro Direct Methanol Fuel Cell

“…Pt catalyst sites create a high density of atomic steps, edges, and kinks, which can break chemical bonds. The design of new supports for Pt catalysts has also been an alternative strategy to enhance catalyst stability and reduce the cost [10,11]. Kim et al used carbon nanotubes, ammonium carbonate, and ammonium hydrocarbonate as pore-forming materials in the cathode catalyst layer to improve mass transport.…”

“…By adding Vulcan XC-72R, Ketjen Black EC 300J, and Black Pearls 2000 carbon blacks to the cathode catalyst layer of Pt black, Wang et al were able to more than double the power density of the prepared MEA [14,15]. Most efforts were put into tuning micropore structure and improving electrical conductivity through use of carbon materials [10,[16][17][18]. In these ways, the reactive surface area of the catalysts and their electrochemical activity are improved, while Ohmic loss is reduced to as little as possible.…”