Controlled growth and shape formation of platinum nanoparticles and their electrochemical properties

Inaba, Masaaki; Ando, Miwa; Hatanaka, Aoi; Nomoto, Akihiro; Matsuzawa, Koichi; Tasaka, Akimasa; Kinumoto, Taro; Iriyama, Yasutoshi; Ogumi, Zempachi

doi:10.1016/j.electacta.2006.03.094

Cited by 114 publications

(100 citation statements)

References 18 publications

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“…Inaba et al 100 found a size effect of Pt NPs ascribed to peroxide formation. It was recently found that atomically dispersed Pt signicantly differs from cluster-type Pt catalysts in terms of electro-chemical behaviour: the former selectively catalyses a two-electron ORR pathway producing H 2 O 2 , rather than the conventional four electron ORR pathway producing H 2 O.…”

Section: Another Investigationmentioning

confidence: 99%

“…Tetrahedra were synthesized with H 2 as a reducing agent in the presence of sodium polyacrylate. Inaba et al 67 synthesised single cubic Pt NPs with Pt (100) faces from a solution of K 2 PtCl 4 in the presence of sodium polyacrylate as a capping reagent. When the polymer of MW ¼ 5100 was added at a molar ratio of Pt/PAA ¼ 1/ 12, cubic platinum NPs of an average size of 10.3 nm were predominantly formed (ca.…”

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confidence: 99%

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A comprehensive review of Pt electrocatalysts for the oxygen reduction reaction: Nanostructure, activity, mechanism and carbon support in PEM fuel cells

et al. 2017

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A comprehensive review of Pt electrocatalysts for the oxygen reduction reaction: nanostructure, activity, mechanism and carbon support in PEM fuel cells. Journal of Materials Chemistry A, 5 (5). pp. 1808 -1825 . ISSN 2050 Access from the University of Nottingham repository: http://eprints.nottingham.ac.uk/40957/1/Journal%20of%20Materials%20Chemistry%20A %EF%BC%88C6TA08580F%20-%20corrected%20proofs%20-final%EF%BC%89.pdf Copyright and reuse:The Nottingham ePrints service makes this work by researchers of the University of Nottingham available open access under the following conditions. This article is made available under the University of Nottingham End User licence and may be reused according to the conditions of the licence. For more details see: http://eprints.nottingham.ac.uk/end_user_agreement.pdf A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. Translation errors between word-processor files and typesetting systems can occur so the whole proof needs to be read. Please pay particular attention to: tabulated material; equations; numerical data; figures and graphics; and references. If you have not already indicated the corresponding author(s) please mark their name(s) with an asterisk. Please e-mail a list of corrections or the PDF with electronic notes attached -do not change the text within the PDF file or send a revised manuscript. Corrections at this stage should be minor and not involve extensive changes. All corrections must be sent at the same time.Please bear in mind that minor layout improvements, e.g. in line breaking, table widths and graphic placement, are routinely applied to the final version.We will publish articles on the web as soon as possible after receiving your corrections; n no late corrections will be made. The sluggish rate of the oxygen reduction reaction (ORR) in proton exchange membrane (PEM) fuel cells has been a major challenge. Significantly increasing efforts have been made worldwide towards a highly active ORR catalyst with high durability. Among all the catalysts exploited, Pt electrocatalysts are still the best in terms of a comprehensive evaluation. The investigation of Pt-based ORR catalysts is necessary for a practical ORR catalyst with low Pt content. This paper reviews recent progress in the studies of the mechanism, nanostructure, size effect and carbon supports of Pt electrocatalysts for the ORR. The importance of the size and structure control of Pt ORR catalysts, related with carbon support materials, is indicated. The potential methods for such control are discussed. The progress in theoretical studies and in situ catalyst characterization are also discussed. Finally, challenges and future developments are addressed.

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Section: Another Investigationmentioning

confidence: 99%

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confidence: 99%

A comprehensive review of Pt electrocatalysts for the oxygen reduction reaction: Nanostructure, activity, mechanism and carbon support in PEM fuel cells

et al. 2017

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“…[1,2] Considerable efforts have been made in this area; however, most of these studies involve spherical nanoparticles or nanoparticles with an undetermined shape. The performance of Pt nanoparticles in catalytic processes has not only been tuned by controlling the size of the nanoparticles, but also by adjusting their morphology.…”

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confidence: 99%

“…[17] Previous studies have also shown that Pt NCs are excellent electrocatalysts for oxygen reduction. [1,11] Thus, Pt NCs were chosen as the electrocatalysts in this study. Pt is expensive, and therefore designing low-Pt-consumption, high-activity catalysts is one of the main goals of fuel cells.…”

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confidence: 99%

Carbon Nanotubes Decorated with Pt Nanocubes by a Noncovalent Functionalization Method and Their Role in Oxygen Reduction

Yang¹,

Wang²,

Yang³

et al. 2008

Advanced Materials

128

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“…Lamas and Balbuena [19] examined the role of Nafion content in the CL. Malek et al [20] performed a coarse-gained MD simulation based on meso-scale calculations The dependence of the distribution of Pt particle sizes on the fabrication process is well documented [7,[21][22][23] and the distribution has some effect on PEMFC performance [23]. The instability of Pt nano-particles for low temperature fuel cell has also been discussed by Shao-Horn et al [24], who presented evidence for different mechanisms including Ostwald ripening, crystal migration, detachment of particle from carbon support and dissolution of Pt in the ion phase.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pt nano-particle size on the microstructure of PEM fuel cell catalyst layers: Insights from molecular dynamics simulations

Cheng

Malek

Sui

2010

Electrochimica Acta

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The effect of Pt nano-particles size on the microstructure of catalyst layers in a Polymer Electrolyte Fuel Cell is investigated by means of molecular dynamics simulations. The catalyst layer model includes carbon-supported platinum, perfluorosulfonate ionomer (PFSI), hydronium ions and water molecules. Three different Pt nano-particle sizes, i.e. 1, 2 and 3 nm, are studied, and simulations provide visualization of the distinct micro-morphologies of the CL corresponding to each nano-particle size. The results are analyzed using pair correlation functions, showing that different microstructures are obtained for different Pt nano-particle sizes, and also that inclusion of PFSI in the simulations impacts significantly the final configuration of Pt nano-particles. Water molecules are found to distribute near the side chains of PFSI and surface of Pt nano-particles, but far from the graphite surface. Side chains form clusters and exhibit different dispersion toward the Pt surface. The orientations of the side chains in the vicinity of the Pt surface are analyzed in detail. The dispersion of perfluorosulfonate ionomer is found to strongly influence the merging of Pt nano-particles and, consequently, the CL microstructure formation.

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Controlled growth and shape formation of platinum nanoparticles and their electrochemical properties

Cited by 114 publications

References 18 publications

A comprehensive review of Pt electrocatalysts for the oxygen reduction reaction: Nanostructure, activity, mechanism and carbon support in PEM fuel cells

A comprehensive review of Pt electrocatalysts for the oxygen reduction reaction: Nanostructure, activity, mechanism and carbon support in PEM fuel cells

Carbon Nanotubes Decorated with Pt Nanocubes by a Noncovalent Functionalization Method and Their Role in Oxygen Reduction

Effect of Pt nano-particle size on the microstructure of PEM fuel cell catalyst layers: Insights from molecular dynamics simulations

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