Pt-based nanoarchitecture and catalyst design for fuel cell applications

Jung, Namgee; Chung, Dong Young; Ryu, Jaeyune; Yoo, Sung Jong; Sung, Yung‐Eun

doi:10.1016/j.nantod.2014.06.006

Cited by 282 publications

(157 citation statements)

References 107 publications

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“…11 The pore volumes of carbon blacks consisted primarily of pores smaller than 8 nm. 106 The interior surface area in carbon support particles is less favourable due to their inferior character in terms of mass transport for the electrode reactions.…”

Section: Carbon Blackmentioning

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: Carbon Blackmentioning

confidence: 99%

“…Therefore they play a crucial role in the obtained nanoparticle size and dispersion. 11,65 Many researches showed the weak interaction could not support small metal particles (<1 nm). The nitrogen-doped carbons are considered to serve as anchoring sites for metal nanoparticle deposition, concurrently promoting catalytic reactions.…”

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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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“…Recently, most of the pre-commercial low-temperature DMFCs use platinum-based electrocatalysts. [1][2][3] Consequently, the industrial manufacturing cost is high which poses obstacles to wide applications. Overall, oxidation of methanol in DMFCs follows the reaction: CH 3 OH þ H 2 O ¼ CO 2 þ 6H þ þ 6e.…”

Section: Introductionmentioning

confidence: 99%

Cobalt/Chromium Nanoparticles-Incorporated Carbon Nanofibers as Effective Nonprecious Catalyst for Methanol Electrooxidation in Alkaline Medium

Mohamed

Motlak

Fouad

et al. 2016

NANO

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Cobalt-Chrome nanoparticles-incorporated carbon nano¯bers (CNFs) are proposed as an e®ec-tive nonprecious electrocatalyst for methanol oxidation in the alkaline media. The introduced nano¯bers were prepared by simple technique, electrospinning. Carbonization of as-spun mat composed of chromium acetate, cobalt acetate and poly(vinyl alcohol) (PVA) at high temperature (900 C) leads to production of the introduced nano¯bers. The physicochemical characteristics were investigated by X-ray di®ractometer (XRD), scanning electron microscope (SEM), eld emission scanning electron microscope (FESEM), transmission electron microscope (TEM) equipped with EDX and TEM mapping. The exploited analyses con¯rmed that the¯nal product is in the form of CNFs decorated by Co/Cr nanoparticles. Based on the results obtained from the cyclic voltammetry (CV) measurements, the proposed Co/Cr-incorporated CNFs possess high electrocatalytic activity toward methanol electrooxidation as a clear peak of methanol oxidation appeared with corresponding current density of 56 mA/cm 2 . Moreover, the current density increased by increasing methanol concentration up to 4.0 M. Overall, the proposed nano¯bers open new avenue for platinum-free and stable nanostructural catalysts for fuel cell technology.

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“…Considering that electrochemical reactions occur on the surface, nanoparticles are seen as prime candidates as they have an extremely high surface to volume ratio, and therefore a large number of active sites for reactions. Nanoparticle architecture can be applied to fuel cell applications, where, in particular, alloys with transition metals, coreshell structures, and shape-controlled strategies are considered promising and effective [2,3]. However, the fundamental understanding of size issues in fuel cell catalysts is still limited owing to the difficulty in controlling the nanoparticle synthesis and understanding the complexity of the surface properties of nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalyst for the Oxygen Reduction Reaction: from the Nanoscale to the Macroscale

Chung¹,

Sung²

2014

Journal of Electrochemical Science and Technology

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The use of nanoscale electrocatalysts is a promising strategy for achieving high catalyst activity due to their large surface area. However, catalyst activity is not directly correlated to particle size. To understand this discrepancy, many studies have been conducted, but a full understanding has still not been achieved, despite the importance of particle size effects in designing an active catalyst. In this review, we focus on the discussion of particle size effects on the oxygen reduction reaction, and also discussed the nanoscale design beyond the nanoparticle to the meso and macroscale design.

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Pt-based nanoarchitecture and catalyst design for fuel cell applications

Cited by 282 publications

References 107 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

Cobalt/Chromium Nanoparticles-Incorporated Carbon Nanofibers as Effective Nonprecious Catalyst for Methanol Electrooxidation in Alkaline Medium

Electrocatalyst for the Oxygen Reduction Reaction: from the Nanoscale to the Macroscale

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