Fuel cell catalyst layer evaluation using a gas diffusion electrode half-cell: Oxygen reduction reaction on Fe-N-C in alkaline media

Ehelebe K, Ashraf T, Hager S, Seeberger D, Thiele S, Cherevko S (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Electrochemistry Communications Elsevier

Book Volume: 116

Article Number: 106761

DOI: 10.1016/j.elecom.2020.106761

Abstract

Anion exchange membrane fuel cells (AEMFC) are a promising technology to allow the application of non-precious metal catalysts. While many of such catalysts have been identified in numerous recent fundamental research studies, reports evaluating these catalysts in realistic AEMFC catalyst layers together with stability assessments are rare. In the present work we show that fast and reliable evaluation and optimization of Fe-N-C-based oxygen reduction reaction (ORR) catalyst layers can be achieved using a gas diffusion electrode (GDE) half-cell approach. To set a benchmark in such measurements, a commercial Pajarito Powder Fe-N-C catalyst and commercial AemionTM ionomer are used. It is demonstrated that the ORR performance can be increased significantly by fine-tuning of the ionomer activation time. Furthermore, the optimized Fe-N-C-based catalyst layer shows very high stability with no observable performance deterioration after 5000 cycles in the 0.6–1.0 V vs. RHE potential window.

Authors with CRIS profile

Konrad Ehelebe Lehrstuhl für Elektrokatalyse (HIERN) Dominik Thiel Professur für Electrocatalytic Interface Engineering (HIERN) Simon Thiele Professur für Electrocatalytic Interface Engineering (HIERN)

Involved external institutions

Forschungszentrum Jülich / Research Centre Jülich (FZJ) DE Germany (DE) Instituto Superior Técnico PT Portugal (PT)

How to cite

APA:

Ehelebe, K., Ashraf, T., Hager, S., Seeberger, D., Thiele, S., & Cherevko, S. (2020). Fuel cell catalyst layer evaluation using a gas diffusion electrode half-cell: Oxygen reduction reaction on Fe-N-C in alkaline media. Electrochemistry Communications, 116. https://doi.org/10.1016/j.elecom.2020.106761

MLA:

Ehelebe, Konrad, et al. "Fuel cell catalyst layer evaluation using a gas diffusion electrode half-cell: Oxygen reduction reaction on Fe-N-C in alkaline media." Electrochemistry Communications 116 (2020).

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