Abstract
The electronic structure of electrocatalysts plays a critical role in the design of methanol oxidation reaction (MOR) catalysts. Herein, a series of Co3O4 electrocatalysts with W doping at different levels, including 0, 2.5, and 5% have been prepared by a facile method. According to results of comparisons, 2.5 % W-doped catalyst exhibits low onset potential and high mass activity (377.75 mA mg−1) in alkaline media, which is 1.825 times higher than that of pure Co3O4 at the same conditions. The superior catalytic activity of 2.5 % W-doped Co3O4 for methanol oxidation is attributed to enhanced dispersibility and optimized electronic structure of Co3O4. The activity and stability of catalytic systems prove W-doped Co3O4 catalyst can be a candidate of efficient electrocatalysts towards MOR.
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