Oxygen reduction reaction and proton exchange membrane fuel cell performance of pulse electrodeposited Pt-Ni and Pt-Ni-Mo(O) nanoparticles
Eiler, Konrad (Universitat Autònoma de Barcelona. Departament de Física)
Mølmen, Live (Jönköping University. Department of Materials and Manufacturing)
Fast, Lars (RISE Research Institutes of Sweden. Department of Electrification and Reliability)
Leisner, Peter (Jönköping University. Department of Materials and Manufacturing)
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
Pellicer Vilà, Eva Maria (Universitat Autònoma de Barcelona. Departament de Física)

Data:	2022
Resum:	Proton exchange membrane fuel cells (PEMFCs) are an important alternative to fossil fuels and a complement to batteries for the electrification of vehicles. However, their high cost obstructs commercialization, and the catalyst material, including its synthesis, constitutes one of the major cost components. In this work, Pt-Ni and Pt-Ni-Mo(O) nanoparticles (NPs) of varying composition have been synthesized in a single step by pulse electrodeposition onto a PEMFC's gas diffusion layer. The proposed synthesis route combines NP synthesis and their fixation onto the microporous carbon layer in a single step. Both Pt-Ni and Pt-Ni-Mo(O) catalysts exhibit extremely high mass activities at oxygen reduction reaction (ORR) with very low Pt loadings of around 4 μg/cm2 due to the favorable distribution of NPs in contact with the proton exchange membrane. Particle sizes of 40-50 nm and 40-80 nm were obtained for Pt-Ni and Pt-Ni-Mo(O) systems, respectively. The highest ORR mass activities were found for Pt67Ni33 and Pt66Ni32-MoOx NPs. The feasibility of a single-step electrodeposition of Pt-Ni-Mo(O) NPs was successfully demonstrated; however, the ternary NPs are of more amorphous nature in contrast to the crystalline, binary Pt-Ni particles, due to the oxidized state of Mo. Nevertheless, despite their heterogeneous nature, the ternary NPs show homogeneous behavior even on a microscopic scale.
Ajuts:	European Commission 764977 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-292 Agencia Estatal de Investigación PID2020-116844RB-C21
Nota:	Altres ajuts: acords transformatius de la UAB
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Pulse electrodeposition ; PEM fuel cell ; Electrocatalysis ; Hydrogen energy ; Electrosynthesis
Publicat a:	Materials today energy, Vol. 27 (July 2022) , art. 101023, ISSN 2468-6069

DOI: 10.1016/j.mtener.2022.101023

12 p, 4.3 MB

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Grup de nanoenginyeria de materials, nanomagnetisme i nanomecànica (Gnm3)
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