Impact of catalyst loading, ionomer content, and carbon support on the performance of direct isopropanol fuel cells
Hauenstein P, Mangoufis Giasin I, Seeberger D, Wasserscheid P, Mayrhofer K, Katsounaros I, Thiele S (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 10
Article Number: 100064
DOI: 10.1016/j.powera.2021.100064
Abstract
Liquid Organic Hydrogen Carriers (LOHC) offer a promising solution for hydrogen storage in the existing infrastructure for conventional fuels. Within this framework, the isopropanol/acetone couple as a light-LOHC system is used to generate electricity in a direct isopropanol fuel cell (DIFC). This work focuses on the impact of catalyst loading, ionomer content and catalyst support on the performance of DIFCs. We achieve a performance rise from 95 mW cm-2 to 219 mW cm-2 under air operation by increasing the anode catalyst loading from 0.5 mg cm-2 to 4 mg cm-2, which can be attributed to the increased abundance of active catalyst sites with higher loadings. In contrast, we find that the cathode loading for the oxygen reduction reaction (ORR) plays a minor role in the performance of DIFCs. Therefore, the cathode loading can be minimized to decrease the total amount of platinum-group metals and, consequently, to save cost. It was also found that an ionomer content of 30% on the anode side is optimal. Additionally, different carbon supports were investigated, where advanced high surface area carbon support showed superior performance to Vulcan with an increase of 20% in power density, motivating the development of new carbon supports for DIFCs.
Authors with CRIS profile
Pascal Hauenstein
Professur für Electrocatalytic Interface Engineering (HIERN)
Iosif Mangoufis Giasin
Lehrstuhl für Elektrokatalyse (HIERN)
Dominik Thiel
Professur für Electrocatalytic Interface Engineering (HIERN)
Peter Wasserscheid
Lehrstuhl für Chemische Reaktionstechnik
Karl Mayrhofer
Lehrstuhl für Elektrokatalyse (HIERN)
Simon Thiele
Professur für Electrocatalytic Interface Engineering (HIERN)
Involved external institutions
Germany (DE)How to cite
APA:
Hauenstein, P., Mangoufis Giasin, I., Seeberger, D., Wasserscheid, P., Mayrhofer, K., Katsounaros, I., & Thiele, S. (2021). Impact of catalyst loading, ionomer content, and carbon support on the performance of direct isopropanol fuel cells. Journal of Power Sources Advances, 10. https://doi.org/10.1016/j.powera.2021.100064
MLA:
Hauenstein, Pascal, et al. "Impact of catalyst loading, ionomer content, and carbon support on the performance of direct isopropanol fuel cells." Journal of Power Sources Advances 10 (2021).
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