An Efficient Electrocatalyst (PtCo/C) for the Oxygen Reduction Reaction

Hou, Bingxue; Luo, Xinlei; Zheng, Ziheng; Tang, Rui; Zhang, Qi; Wang, Yuming; Tan, Zanxiong

doi:10.3390/catal12070794

Cited by 3 publications

(2 citation statements)

References 21 publications

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“…Conventionally, disordered solid solution alloys tend to be formed by the general wet-chemical methods. ,− In order to promote the disorder-to-order phase transition, high-temperature annealing is necessary to overcome the activation barrier and allow the atomic diffusion. Severe particle sintering, morphology change and decrease in active surface area are several unfavorable characteristics of high temperature annealing processes, because these factors will hinder the enhancement of electrocatalysis.…”

Section: Synthetic Strategies Of Intermetallicsmentioning

confidence: 99%

Intermetallic Nanocrystals for Fuel-Cells-Based Electrocatalysis

Lin,

Li,

Zeng

et al. 2023

Chem. Rev.

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Electrocatalysis underpins the renewable electrochemical conversions for sustainability, which further replies on metallic nanocrystals as vital electrocatalysts. Intermetallic nanocrystals have been known to show distinct properties compared to their disordered counterparts, and been long explored for functional improvements. Tremendous progresses have been made in the past few years, with notable trend of more precise engineering down to an atomic level and the investigation transferring into more practical membrane electrode assembly (MEA), which motivates this timely review. After addressing the basic thermodynamic and kinetic fundamentals, we discuss classic and latest synthetic strategies that enable not only the formation of intermetallic phase but also the rational control of other catalysis-determinant structural parameters, such as size and morphology. We also demonstrate the emerging intermetallic nanomaterials for potentially further advancement in energy electrocatalysis. Then, we discuss the state-of-the-art characterizations and representative intermetallic electrocatalysts with emphasis on oxygen reduction reaction evaluated in a MEA setup. We summarize this review by laying out existing challenges and offering perspective on future research directions toward practicing intermetallic electrocatalysts for energy conversions.

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Section: Synthetic Strategies Of Intermetallicsmentioning

confidence: 99%

Intermetallic Nanocrystals for Fuel-Cells-Based Electrocatalysis

Lin,

Li,

Zeng

et al. 2023

Chem. Rev.

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“…Catalysts 2024, 14, 57 2 of 34 A mainstream means for reducing the cost of Pt-based catalysts and improving the ORR catalytic performance is to alloy Pt with nonprecious metals (M) to form PtM alloys or M/Pt core/shell structures [30][31][32][33]. The consistency of experiments and theories has proved that alloying can not only improve the utilization efficiency of Pt, but also optimize the adsorption strength towards oxygen-containing intermediates through a potential ligand/strain effect [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Ultradurable Pt-Based Catalysts for Oxygen Reduction Electrocatalysis

Li,

Zhou,

Zhao

et al. 2024

Catalysts

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An oxygen reduction reaction (ORR) is the key half reaction of proton exchange membrane fuel cells (PEMFCs), and is highly dependent on Pt-based nanocrystals as core electrocatalysts. Despite the exceptional ORR activity from adjusting the electronic structures of surface or near-surface atoms, several serious issues, including the corrosion of carbon supports, the preferential leaching of active metal elements, the instability of surface low-coordinated atoms and the sintering/agglomeration of nanocrystals, still exist, challenging the ORR durability of developed Pt-based ORR catalysts. From the point of view of the catalyst structure design, in this review, we summarized the state-of-the-art structural regulation strategies for improving the ORR durability of Pt-based catalysts. The current limitation of Pt-based binary catalysts for ORR electrocatalysis is firstly discussed, and the detailed strategies are further classified into the optimization of supports, metal-doped alloys, core/shell structures, intermetallics and high-entropy alloys, etc. The structure–performance relationship is detailedly explained, especially emphasizing the elimination of the above restrictions. Finally, the existing challenges and future research direction are further presented, aiming at practicing the PEMFC devices of the ultradurable Pt-based catalysts.

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Unveiling the resistance component on fuel cell electrodes by ionic liquid adsorbed PtCo/C catalyst through distribution of relaxation time

Kim,

Jung

et al. 2024

Applied Surface Science

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An Efficient Electrocatalyst (PtCo/C) for the Oxygen Reduction Reaction

Cited by 3 publications

References 21 publications

Intermetallic Nanocrystals for Fuel-Cells-Based Electrocatalysis

Intermetallic Nanocrystals for Fuel-Cells-Based Electrocatalysis

Ultradurable Pt-Based Catalysts for Oxygen Reduction Electrocatalysis

Unveiling the resistance component on fuel cell electrodes by ionic liquid adsorbed PtCo/C catalyst through distribution of relaxation time

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