Transfer Efficiency and Morphology of Different Concentrations of Catalyst Ink in Fuel Cell Electrode Preparation

Abstract:

In the fabrication of fuel cell electrodes, applying catalyst ink onto a substrate is crucial. The performance of the proton exchange membrane fuel cell (PEMFC) is subsequently impacted by how the catalyst is applied onto substrate as well as in terms of its resulting morphology. In this study, a direct catalyst ink spraying approach was done in order to investigate transfer efficiency and surface morphology for different concentrations of ink. The concentration of catalyst ink used in the spraying process are 0.5, 1.0, 1.5, 2.0 and 2.5 mg/ml with fixed loading of 1.0 mg/cm². The transfer efficiency of the catalyst inks was calculated neglecting human error during spraying. The coating thickness and distribution of the resulting catalysts were analysed via Field Emission – Scanning Electron Microscope (FESEM).

• Periodical: Engineering Headway (Volume 15)
• Pages: 99-104
• DOI: https://doi.org/10.4028/p-lt4TsQ
• Online since: January 2025
• Authors: Norhazirah Azhar*, Thye-Foo Choo, Nur Ubaidah Saidin, Nurazila Mat Zali
• Keywords: Concentration, Ink, Particle Size, PEMFC, Spray

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