Synergistically Enhanced Electrocatalytic Stability of Pt Catalyst Supported by Doped Porous Carbon Nanostructure for Oxygen Reduction Reaction

In this study, a doped porous carbon (DPC) as a support was prepared with polyaniline as the main carbon source, iron nitrate nonahydrate as a metal doping source, and dicyandiamide as a nitrogen doping source in the presence of 20 nm silica bead as a template. The carbon support showed fairly high specific surface area (~ 740 m2 g−1), well-defined pore structure, and a proper nitrogen doping (~ 4.9 at.%). The Pt cathode catalyst deposited on the doped porous carbon using an NaBH4 reduction method (Pt/DPC) exhibited significantly improved ORR performance in the half and single cells, compared with the conventional carbon-supported Pt catalyst. The superior ORR stability of Pt/DPC may be as a result of the particular interaction between Pt catalyst and DPC support as a doped carbon.Graphical Abstract
Source: European Journal of Applied Physiology - Category: Physiology Source Type: research