Amino acid-assisted fabrication of uniform dendrite-like PtAu porous nanoclusters as highly efficient electrocatalyst for methanol oxidation and oxygen reduction reactions

Xie, Xiuwen; Lv, Jingjing; Liu, Lei; Wang, Ai‐Jun; Feng, Jiu‐Ju; Xu, Quan‐Qing

doi:10.1016/j.ijhydene.2016.11.055

Cited by 58 publications

(10 citation statements)

References 51 publications

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“…The highest performance was achieved by the clusters with an optimal Pt-to-Rh ratio equaling 76.9:23.0, which adopted a four-electron pathway and retained 85% of its limiting current after 15,000 cycles of potential scans [75]. Recently, Feng and Xu developed a wet chemical approach to fabricate monodispersed porous dendrite-like PtAu porous nanoclusters for ORR and methanol oxidation by employing L -histidine as the structure-director and PVP as the dispersing agent [76]. In a recent report, our group described the preparation of AuPd clusters supported by porous carbon nanosheets in alkaline media [73].…”

Section: Alloyed Noble Metal Clusters For Orrmentioning

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: Alloyed Noble Metal Clusters For Orrmentioning

confidence: 99%

Oxygen Reduction Reaction Catalyzed by Noble Metal Clusters

Tang

Wang

2018

Catalysts

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“…For Pt 4 Co MDs, the1000th polarization curve is almost identical to the initial one with the negligible change of the E 1/2 ( Δ =11 mV) in contrast with Pt black ( E 1/2 , Δ =21 mV), reflecting the enhanced tolerance of Pt 4 Co MDs. Besides, the SA and MA of Pt 4 Co MDs have lower decline (19.8 % and 19.9 %) compared with Pt black (21.2 % and 21.1 %) at the fixed potential of 0.75 V. The small drop is ascribed to the aggregation and weak dissolution of the materials, inducing the minimization regarding the Ostwald ripening and/or surface‐energy during the catalytic process . All these data indicate the enhanced catalytic activity and excellent stability of Pt 4 Co MDs toward ORR.…”

Section: Resultsmentioning

confidence: 82%

Facile Solvothermal Synthesis of Pt₄Co Multi‐dendrites: An Effective Electrocatalyst for Oxygen Reduction and Glycerol Oxidation

Jiang

Wang

et al. 2017

ChemElectroChem

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In this work, hierarchical Pt4Co multi‐dendrites (MDs) with abundant active sites were synthesized by using a one‐pot solvothermal co‐reduction approach, where cetyltrimethylammonium chloride (CTAC), citric acid, and oleylamine served as the structure director, eco‐friendly reducing agent, and co‐reductant, respectively. The architectures were mainly characterized by using a series of characterization techniques, demonstrating the enlarged electrochemically active surface area of 28.27 m2 g−1, much enhanced mass activity and specific activity for oxygen reduction reaction (279.14 mA mg−1Pt and 0.89 mA cm−2) and glycerol oxidation reaction (1422.56 mA mg−1Pt, 4.58 mA cm−2) comparable with commercial Pt black, along with the superior durability. These results demonstrate the potential applications of the synthesized Pt4Co MDs catalyst in energy storage and transformation.

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“…These secondary metal species, along with the elaborate‐designed architectures, contribute to excellent catalytic properties for MOR. By far, such bimetallic materials have been controllably synthesized into a variety of structures ( Figure ), including PtPd alloy nanocubes, [ 79 ] hollow porous PtPd alloy nanospheres, [ 80 ] mesoporous Pd@Pt microrods, [ 81 ] hollow PtAg alloy nanospheres, [ 82 ] uniform dendrite‐like PtAu porous nanoclusters, [ 83 ] and Pt nanoparticles modified Au dendritic nanostructures. [ 84 ]…”

Section: Noble Metal‐based Catalystsmentioning

confidence: 99%

Metal‐Based Electrocatalysts for Methanol Electro‐Oxidation: Progress, Opportunities, and Challenges

Tong

Yan

Liang

et al. 2019

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Direct methanol fuel cells (DMFCs) are among the most promising portable power supplies because of their unique advantages, including high energy density/mobility of liquid fuels, This article is protected by copyright. All rights reserved. 2 low working temperature, and low emission of pollutants. Various metal-based anode catalysts have been extensively studied and utilized for the essential methanol oxidation reaction (MOR), due to their superior electrocatalytic performance. At present, especially with the rapid advance of nanotechnology, enormous efforts have been exerted to further enhancing the catalytic performance and minimizing the use of precious metals. Constructing multicomponent metal-based nanocatalysts with precisely designed structures can achieve this goal by providing highly tunable compositional and structural characteristics, which is promising for the modification and optimization of their related electrochemical properties. The recent advances of the metal-based electrocatalytic materials with rationally designed nanostructures and chemistries for MOR in DMFCs are highlighted and summarized herein. The effects of the well-defined nanoarchitectures on the improved electrochemical properties of the catalysts are illustrated. Finally, conclusive perspectives are provided on the opportunities and challenges for further refining the nanostructure of the metal-based catalysts and improving the electrocatalytic performance, as well as the commercial viability.

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Amino acid-assisted fabrication of uniform dendrite-like PtAu porous nanoclusters as highly efficient electrocatalyst for methanol oxidation and oxygen reduction reactions

Cited by 58 publications

References 51 publications

Oxygen Reduction Reaction Catalyzed by Noble Metal Clusters

Oxygen Reduction Reaction Catalyzed by Noble Metal Clusters

Facile Solvothermal Synthesis of Pt₄Co Multi‐dendrites: An Effective Electrocatalyst for Oxygen Reduction and Glycerol Oxidation

Metal‐Based Electrocatalysts for Methanol Electro‐Oxidation: Progress, Opportunities, and Challenges

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Amino acid-assisted fabrication of uniform dendrite-like PtAu porous nanoclusters as highly efficient electrocatalyst for methanol oxidation and oxygen reduction reactions

Cited by 58 publications

References 51 publications

Oxygen Reduction Reaction Catalyzed by Noble Metal Clusters

Oxygen Reduction Reaction Catalyzed by Noble Metal Clusters

Facile Solvothermal Synthesis of Pt4Co Multi‐dendrites: An Effective Electrocatalyst for Oxygen Reduction and Glycerol Oxidation

Metal‐Based Electrocatalysts for Methanol Electro‐Oxidation: Progress, Opportunities, and Challenges

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Facile Solvothermal Synthesis of Pt₄Co Multi‐dendrites: An Effective Electrocatalyst for Oxygen Reduction and Glycerol Oxidation