Synthesis of PtAg bimetallic material as a multi-fuel tolerant electrocatalyst and spectroelectrochemical analysis of its capability to perform the oxygen reduction
By Vargas-Ordaz, M.; Vel
Published in Materials Today Energy
2019
Abstract
Fuel crossover is one of the issues that limit the cell performance of direct alcohol fuel cells. In this work, Pt and PtAg were easily prepared by electrodeposition on glassy carbon electrodes, and tested as tolerant electrocatalysts to alcohol fuels. The physicochemical characterization indicated that crystallite sizes of 4.1 and 3.0 nm were found for Pt and PtAg, respectively. In addition, according with high-resolution scanning electron microscopy, Pt displayed a rosette-like morphology of few tens of nanometers in size, while PtAg was composed mainly by cubes. These arrangements were composed by smaller nanoparticles of 4.3
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