refine in english

Anchoring platinum-based catalysts on suitable carriers, such as graphene, is a promising approach for creating an ideal anode with low platinum content in direct methanol fuel cells. However, the real performance of platinum is often hindered by the blocking and poisoning of active sites, as well as by its dissolution. In this work, we introduce a novel catalyst, Pt/C supported on nitrogen and oxygen codoped vertical graphene (Pt/C@NOVG/CP), which demonstrates exceptional catalytic activity and CO tolerance under a stringent low precious metal loading condition (.045 mgPt cm-2). The vertically aligned structure of the nitrogen and oxygen codoped vertical graphene provides defects and a structure that can chemically bond with Pt/C nanoparticles, enhancing both charge and ion transport. Both experimental results and theoretical calculations indicate that the effective charge transfer between Pt/C and NOVG significantly improves CO tolerance and speeds up the kinetics of the methanol oxidation reaction. In particular, this catalyst achieves an impressive mass activity of up to 4.42 A mg-1, with 64.8% of the initial current density maintained after 3600 seconds of operation, outperforming most platinum-based electrocatalysts.