An Iron-Doped Calcium Titanate Cocatalyst for the Oxygen Reduction Reaction

نویسندگان

چکیده

The oxygen reduction reaction (ORR) is an important challenge in the development and large-scale distribution of energy conversion devices, especially low-temperature proton exchange membrane (PEM) fuel cells. In order to speed up ORR kinetics improve cell performance, iron-doped calcium titanate (CTFO) proposed as a cocatalyst. Fundamental physical chemical characterizations by means X-ray diffraction, infrared spectroscopy, morphological thermal analyses for understanding functional features materials were carried out. Composite catalysts containing different amounts CTFO additive with respect platinum (i.e., Pt:CTFO 1:0.5 1:1 wt:wt) studied using rotating disk electrode (RDE). Fuel tests performed at 80 °C under 30% 80% relative humidity. best composite catalyst was compared bare Pt/C Pt/C:CaTiO3−δ catalyst, revealing superior performances latter high humidity operation, combined result optimized electrolyte-electrode interface improved due inorganic additive.

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ژورنال

عنوان ژورنال: Catalysts

سال: 2023

ISSN: ['2073-4344']

DOI: https://doi.org/10.3390/catal13010127