Abstract
The cost of the catalysts used in the direct methanol fuel cell poses a challenge to its widespread use as an energy efficient and environment friendly fuel conversion technology. In this study, two types of highly ordered mesoporous carbon CMK-8 (I and II) with high surface area and 3-D bicontinuous interpenetrating channels were synthesized and deposited with Pt–Ru nanoparticles using the sodium borohydride reduction method. The electrocatalytic capabilities for methanol oxidation were investigated using cyclic voltammetry and chronoamperometry, and the results were compared with that of Pt–Ru deposited on Vulcan XC-72 using the same preparation method as well as with commercial Pt–Ru/C (E-TEK) catalyst. Pt–Ru/CMK-8-I synthesized by the method developed in this work revealed an outstanding specific mass activity (487.9 mA/mg) and superior stability compared with the other supports, thus substantiating its potential to reduce the costs of DMFC catalysts.
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