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Effect of Pt–Pd/C coupled catalyst loading and polybenzimidazole ionomer binder on oxygen reduction reaction in high-temperature PEMFC

Yusof, M. S. M. and Jalil, A. A. and Ahmad, A. and Triwahyono, S. and Othman, M. H. D. and Abdullah, T. A. T. and Firmansyah, M. L. and Setiabudi, H. D. and Johari, A. and Nabgan, W. (2019) Effect of Pt–Pd/C coupled catalyst loading and polybenzimidazole ionomer binder on oxygen reduction reaction in high-temperature PEMFC. International Journal of Hydrogen Energy, 44 (37). pp. 20760-20769. ISSN 0360-3199

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Official URL: http://dx.doi.org/10.1016/j.ijhydene.2018.07.192

Abstract

Polybenzimidazole (PBI) was studied as an ionomer binder at varying ratios (1–7) in a 20–40 wt% Pt–Pd/C cathode-coupled catalyst layer for the oxygen reduction reaction (ORR) in a high-temperature proton exchange membrane fuel cell (HT-PEMFC). Catalytic activity was examined by CV and LSV, while the properties of the catalysts were characterized by FESEM-EDX, N2 adsorption–desorption, XRD and FTIR. The results showed that the distribution of metals on the carbon surface, carbon wall thickness and the interaction between ionomer and coupled catalysts affected the ORR performance. The fabricated membrane electrode assembly with 5:95 PBI: 30 wt% Pt–Pd/C catalyst ratio exhibited the best performance and highest durability for HT-PEMFC at 170 °C, yielding a power density of 1.30 Wcm−2 with 0.02 mgPt/cm Pt loading. This performance of ultra-low metal loading of coupled Pt–Pd/C electrocatalyst with PBI binder was comparable to those reported by other studies, highlighting a promising catalyst for fuel cell application.

Item Type:Article
Uncontrolled Keywords:Pt-Pd/C catalyst, Polybenzimidazole ionomer
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:87572
Deposited By: Widya Wahid
Deposited On:30 Nov 2020 17:03
Last Modified:30 Nov 2020 17:03

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