Preparation Of Highly Ordered CNTs-Pt Catalyst Layer In Membrane Electrode Assembly Of Fuel Cell

Membrane electrode assembly (MEA) is a core part of fuel cell, that is made up of proton exchange membrane, gas diffusion layer and catalyst layer. The catalyst layer effects not only the performance of fuel cell, but also the cost as the Pt-based catalysts is hard to replace. In the wake of developments in low Pt loading fuel cell and nanometer materials preparation for membrane electrode assembly has entered into the ordered stage. But, the level of order for now is not enough for the catalyst granule is still glomerate. So a simple, direct, effective method for low Pt loading MEA is the goal.A highly ordered membrane electrode assembly structure and its technology route is presented in this article. This study mainly focus on preparation method for the porous anodic alumina oxide template (AAO), carbon nanometer tube (CNT) and CNT-Pt.Based on the study results, the main conclusion are as follows:1) A two-steps method for preparing AAO was succeed, and the optimized experimental parameters were explored.2) The anodic oxidation process of aluminum is accord with the dissolution model growth mechanisms when an electric field.3) The amorphous carbon could be created only, instead of CNT, by soaking AAO with citric acid, and heat treating after dry.4) Aligned carbon nano-tubes which diameter are about 20nm were prepared by catalytic pyrolysis. the optimum experimental parameters were obtained.5) Reduction impregnation was adopted to prepare CNT-Pt catalyst layer and it’s feasible, so platinum particle move in the CNT. And the rate of electrode reaction raised greatly.