Quí Vinh Nguyen, H.; Nerut, J.; Kasuk, H.; Thomberg, T.; Romann, T.; Aruväli, J.; Külaviir, M.; Paaver, P.; Kochovski, Z.; Härk, E.; Lust, E.: Influence of Chromium Carbide-Derived Carbon Support and Ceria Nanocrystals on Pt-CeO2/C Catalysts for Fuel Cell Applications. ECS Advances 3 (2024), p. 024505/1-15
10.1149/2754-2734/ad456c
Open Access Version
Abstract:
ECS Advances The Electrochemical Society (ECS) logo. The following article is Open access Influence of Chromium Carbide-Derived Carbon Support and Ceria Nanocrystals on Pt–CeO2/C Catalysts for Fuel Cell Applications Huy Quí Vinh Nguyen, Jaak Nerut, Heili Kasuk, Thomas Thomberg, Tavo Romann, Jaan Aruväli, Marian Külaviir, Peeter Paaver, Zdravko Kochovski, Eneli Härk Published 27 May 2024 • © 2024 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited. ECS Advances, Volume 3, Number 2 Citation Huy Quí Vinh Nguyen et al 2024 ECS Adv. 3 024505 DOI 10.1149/2754-2734/ad456c Download Article PDF Article metrics 490 Total downloads Share this article Abstract The influence of different synthesis parameters on CeO2 and Pt nanoparticle (NP) deposition on Ketjenblack carbon (C(KB)) was examined. The Pt NP diameter (3.1–4.1 nm) was not influenced by CeO2 synthesis parameters. The CeO2 NPs synthesized using ultrasound sonication contribute to a better durability of the Pt–CeO2/C against CO poisoning. In contrast, CeO2 synthesized using the microwave heating method contributes to better methanol oxidation reaction (MOR) activity at low electrode potential. Synthesis parameters of CeO2 and Pt NPs developed for the C(KB)-based catalysts were applied for C(Cr3C2)-based catalysts. The Pt NP diameter of C(Cr3C2)-based catalysts was slightly higher (7.2 nm) as some Pt NPs were agglomerated. The C(Cr3C2) support facilitates the MOR and CO stripping, especially in the case of the Pt/C on C(Cr3C2) support. The MOR activity at 0.85 V of Pt NPs on the C(Cr3C2) support is as good as the MOR activity for the best Pt–CeO2 on the C(KB) support. The C(Cr3C2) support also improves the CO removal from the Pt surface. All the synthesized catalysts had better MOR activity than the commercial Pt/C(Vulcan) catalyst. The oxygen reduction reaction activity of Pt–CeO2/C catalysts with higher CeO2 content synthesized with the microwave heating method was very good.