Radiolytic Preparation of Electrocatalysts with Pt‐Co and Pt‐Sn Nanoparticles for a Proton Exchange Membrane Fuel Cell

Kim, Sang Kyum; Park, Ji Yun; Hwang, Soon Choel; Lee, Do Kyun; Lee, Sang‐Heon; Han, Moon‐Hee; Rhee, Young Woo

doi:10.1155/2014/960379

Cited by 3 publications

(2 citation statements)

References 35 publications

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“…Even though the current density of the MEA fabricated with our developed catalyst is slightly lower than that of Pt/C, the obtained power density is quite significant in terms of other reported Pt-based cathodes for PEMFC (Table S10). ,− …”

Section: Resultsmentioning

confidence: 99%

Unveiling the Roles of Lattice Strain and Descriptor Species on Pt-Like Oxygen Reduction Activity in Pd–Bi Catalysts

et al. 2021

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A facile non-template-assisted mechanical ball milling technique was employed to generate a PdBi alloy catalyst. The induced lattice strain upon the milling time caused a shift of the d-band center, thereby enhancing the oxygen reduction reaction (ORR) catalytic activity. Additionally, the Pd–O reduction potential and adsorbed OH coverage used as descriptors stipulated the cause of the enhanced ORR activity upon the increased milling interval. Redox properties of surface Pd are directly correlated with a positive shift in the Pd–O reduction potential and OH surface coverage. Hence, by deconvoluting the lattice strain and the role of the descriptor species we achieved a catalyst system with a specific activity 5.4× higher than that of commercial Pt/C, as well as an improved durability. The experimental observation is well-corroborated by a theoretical simulation done by inducing strain to the system externally.

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Section: Resultsmentioning

confidence: 99%

Unveiling the Roles of Lattice Strain and Descriptor Species on Pt-Like Oxygen Reduction Activity in Pd–Bi Catalysts

et al. 2021

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“…Thus, the type and amount of the transition metals certainly have pronounced effects on the ORR activity, which was summarized by Wang et al recently . PtM alloys consisting of different metals M (M = Co, − Ni, ,,− ,,,,,,− Fe, − Cu, ,,,− Ag, − Au, ,− Pd, ,− Cr, , Mo, Mn, Al, etc.) have been synthesized, and their activities have been compared.…”

Section: Pt Alloysmentioning

confidence: 95%

Recent Advances in Electrocatalysts for Oxygen Reduction Reaction

et al. 2016

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The recent advances in electrocatalysis for oxygen reduction reaction (ORR) for proton exchange membrane fuel cells (PEMFCs) are thoroughly reviewed. This comprehensive Review focuses on the low- and non-platinum electrocatalysts including advanced platinum alloys, core-shell structures, palladium-based catalysts, metal oxides and chalcogenides, carbon-based non-noble metal catalysts, and metal-free catalysts. The recent development of ORR electrocatalysts with novel structures and compositions is highlighted. The understandings of the correlation between the activity and the shape, size, composition, and synthesis method are summarized. For the carbon-based materials, their performance and stability in fuel cells and comparisons with those of platinum are documented. The research directions as well as perspectives on the further development of more active and less expensive electrocatalysts are provided.

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