Graphene-Derived Carbon Support Boosts Proton Exchange Membrane Fuel Cell Catalyst Stability
Pavko L, Gatalo M, Finsgar M, Ruiz-Zepeda F, Ehelebe K, Kaiser P, Geuß M, Dukic T, Surca AK, Sala M, Bele M, Cherevko S, Genorio B, Hodnik N, Gaberscek M (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 12
Pages Range: 9540-9548
Journal Issue: 15
Abstract
The lack of efficient and durable proton exchange membrane fuel cell electrocatalysts for the oxygen reduction reaction is still restraining the present hydrogen technology. Graphene-based carbon materials have emerged as a potential solution to replace the existing carbon black (CB) supports; however, their potential was never fully exploited as a commercial solution because of their more demanding properties. Here, a unique and industrially scalable synthesis of platinum-based electrocatalysts on graphene derivative (GD) supports is presented. With an innovative approach, highly homogeneous as well as high metal loaded platinum-alloy (up to 60 wt %) intermetallic catalysts on GDs are achieved. Accelerated degradation tests show enhanced durability when compared to the CB-supported analogues including the commercial benchmark. Additionally, in combination with X-ray photoelectron spectroscopy Auger characterization and Raman spectroscopy, a clear connection between the sp(2) content and structural defects in carbon materials with the catalyst durability is observed. Advanced gas diffusion electrode results show that the GD-supported catalysts exhibit excellent mass activities and possess the properties necessary to reach high currents if utilized correctly. We show record-high peak power densities in comparison to the prior best literature on platinum-based GD-supported materials which is promising information for future application.
Authors with CRIS profile
Konrad Ehelebe
Lehrstuhl für Elektrokatalyse (HIERN)
Pascal Kaiser
Lehrstuhl für Elektrokatalyse (HIERN)
Moritz Geuß
Lehrstuhl für Elektrokatalyse (HIERN)
Involved external institutions
University of Maribor (UM) / Univerza v Mariboru
Slovenia (SI)
National Institute of Chemistry / Kemijski Inštitut
Slovenia (SI)
ReCatalyst
Slovenia (SI)
Forschungszentrum Jülich / Research Centre Jülich (FZJ)
Germany (DE)
Slovenia (SI)
National Institute of Chemistry / Kemijski Inštitut
Slovenia (SI)
ReCatalyst
Slovenia (SI)
Forschungszentrum Jülich / Research Centre Jülich (FZJ)
Germany (DE)
How to cite
APA:
Pavko, L., Gatalo, M., Finsgar, M., Ruiz-Zepeda, F., Ehelebe, K., Kaiser, P.,... Gaberscek, M. (2022). Graphene-Derived Carbon Support Boosts Proton Exchange Membrane Fuel Cell Catalyst Stability. ACS Catalysis, 12(15), 9540-9548. https://dx.doi.org/10.1021/acscatal.2c01753
MLA:
Pavko, Luka, et al. "Graphene-Derived Carbon Support Boosts Proton Exchange Membrane Fuel Cell Catalyst Stability." ACS Catalysis 12.15 (2022): 9540-9548.
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