Biaxially strained PtPb/Pt core/shell nanoplate boosts oxygen reduction catalysis

Bu, Lingzheng; Zhang, Nan; Guo, Shaojun; Zhang, Xu; Li, Jing; Yao, Jianlin; Wu, Tao; Lü, Gang; Ma, Jingyuan; Su, Dong; Huang, Xiaoqing

doi:10.1126/science.aah6133

Cited by 1,388 publications

(1,100 citation statements)

References 85 publications

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“…To achieve the large-scale commercialization of PEMFCs, the biggest challenge arises from the sluggish oxygen reduction reaction occurring at the cathode [3][4][5][6]. The current state-of-the-art electrocatalyst for the oxygen reduction reaction (ORR) is Pt nanoparticles (5-10 nm in diameter) dispersed in porous carbon materials (denoted as Pt/C) [7][8][9][10]. Even if Pt is considered as the best choice as the catalyst, there are several significant limitation factors that hinder its widespread utilizations [11,12].…”

Section: Introductionmentioning

confidence: 99%

Oxygen Reduction Reaction Catalyzed by Noble Metal Clusters

Tang

Wang

2018

Catalysts

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Highly-efficient catalysts for the oxygen reduction reaction (ORR) have been extensively investigated for the development of proton exchange membrane fuel cells (PEMFCs). The state-ofthe-art Pt/C catalysts suffer from high price, limited accessibility of Pt, sluggish reaction kinetics, as well as undesirable long-term durability. Engineering ultra-small noble metal clusters with high surface-to-volume ratios and robust stabilities for ORR represents a new avenue. After a simple introduction regarding the significance of ORR and the recent development of noble metal clusters, the general ORR mechanism in both acidic and basic media is firstly discussed. Subsequently, we will summarize the recent efforts employing Pt, Au, Ag, Pd and Ru clusters, as well as the alloyed bi-metallic clusters for acquiring highly efficient catalysts to enhance both the activity and stability of ORR. Molecular noble metal clusters with definitive composition to reveal the relevant ORR mechanism will be particularly highlighted. Finally, the current challenges, the future outlook, as well as the perspectives in this booming field will be proposed, featuring the great opportunities and potentials to engineering noble metal clusters as highly-efficient and durable cathodic catalysts for fuel cell applications.

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Section: Introductionmentioning

confidence: 99%

Oxygen Reduction Reaction Catalyzed by Noble Metal Clusters

Tang

Wang

2018

Catalysts

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“…Studies of model surfaces help in identifying structural sensitivities of catalytic reactions and provide guidelines for [72] nanocatalyst design. In recent years, growing attention has been focused on Pt-based nanostructured electrocatalysts with high performance towards ORR ( Table 1).…”

Section: Pt-based Nanoparticles Towards Orrmentioning

confidence: 99%

“…f HRTEM images of jagged Pt NWs supported on carbon [71]. g TEM image of PtPb hexagonal nanoplates and inset is a HAADF-STEM image of an individual nanoplate [72]. h Development timelines for Pt, Pt alloy/ de-alloy, core-shell, non-precious metal, shape-controlled, and nanoframe ORR electrocatalysts [73] PtPb/Pt nanoplates were reported by Huang et al to address the complexity of nanomaterials.…”

Section: Structure With High-index Facetsmentioning

confidence: 99%

Rational Design and Synthesis of Low-Temperature Fuel Cell Electrocatalysts

Tian

Yang

et al. 2018

Electrochem. Energ. Rev.

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Recent progresses in proton exchange membrane fuel cell electrocatalysts are reviewed in this article in terms of cathodic and anodic reactions with a focus on rational design. These designs are based around gaining active sites using model surface studies and include high-index faceted Pt and Pt-alloy nanocrystals for anodic electrooxidation reactions as well as Pt-based alloy/core-shell structures and carbon-based non-precious metal catalysts for cathodic oxygen reduction reactions (ORR). High-index nanocrystals, alloy nanoparticles, and support effects are highlighted for anodic catalysts, and current developments in ORR electrocatalysts with novel structures and different compositions are emphasized for cathodic catalysts. Active site structures, catalytic performances, and stability in fuel cells are also reviewed for carbon-based non-precious metal catalysts. In addition, further developmental perspectives and the current status of advanced fuel cell electrocatalysts are provided.

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“…In the past decade, various experimental methods have been developed to synthesize sizedependent, high catalytic performance noble metal-based nanocomposites with diverse morphologies, such as polyhedron, concave, wire, plate, belt/ribbon, dendrite/branch and cage/frame structures [9][10][11][12][13][14][15][16][17][18][19][20][21]. Smaller size means higher surface-area-to-volume ratio, higher atomic utilization efficiency and more catalytic active sites.…”

Section: à2mentioning

confidence: 99%

Noble Metal-Based Nanocomposites for Fuel Cells

Rong¹,

Zhang²,

Muhammad³

et al. 2018

Novel Nanomaterials - Synthesis and Applications

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Noble metal-based nanocomposites are attractive for a rich variety of electrocatalytic applications as they can exhibit not only a combination of the properties associated with each component but also synergy due to a strong coupling between different constituents. Using noble metal as the base component, a plenty of methods have been recently demonstrated for the synthesis of noble metal-based nanocomposites with novel structures (e.g., alloys, core-shell, skin and 1D/2D structures). In this chapter, an account of recent advances of synthetic approaches to noble metal-based nanocomposites with controlled structures, compositions and sizes are reviewed. The relationship between structures and electrochemical properties of these nanocomposites in fuel cell field is discussed. The potential future directions of research in the field are also addressed.

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Biaxially strained PtPb/Pt core/shell nanoplate boosts oxygen reduction catalysis

Cited by 1,388 publications

References 85 publications

Oxygen Reduction Reaction Catalyzed by Noble Metal Clusters

Oxygen Reduction Reaction Catalyzed by Noble Metal Clusters

Rational Design and Synthesis of Low-Temperature Fuel Cell Electrocatalysts

Noble Metal-Based Nanocomposites for Fuel Cells

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