Nanoparticle seeded pulse electrodeposition for preparing high performance Pt/C electrocatalysts

Huang, Cunping; Odetola, Christopher; Rodgers, Marianne P.

doi:10.1016/j.apcata.2015.03.043

Cited by 16 publications

(10 citation statements)

References 35 publications

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“…43 Huang et al suggested that the number of Pt nuclei formed on the carbon surface depends on the hydrophilicity and uniformity of the support material. 44 Earlier reports confirmed that formation of various functional groups in acid-treated CNTs act as nucleation sites. 49 the potential range from 0.05 to 1.0 V. It has been reported earlier that the pre-peak in the CO-stripping voltammograms of Pt nanoparticles can be attributed to a change in surface morphology such as particle size distribution and aggregation of the nanoparticles.…”

Section: Resultssupporting

confidence: 53%

“…The formation of similar clusters at certain active sites on the surface of CNTs has been reported earlier. 43,44,49 Sharma and Kar suggested that the corroded rough surface of the CNTs after acid-treatment may provide active sites for nucleation. 43 Huang et al suggested that the number of Pt nuclei formed on the carbon surface depends on the hydrophilicity and uniformity of the support material.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, many groups have contributed their efforts to figure out the optimum conditions for the electrochemical deposition of PtNPs onto the support material surface. [37][38][39][40][41][42][43][44][45][46]67,68 Porous Pt aggregates of different shape and surface morphology have been electrochemically deposited on carbon nanotube layer. 41 Basically, two different deposition techniques were applied namely, pulse electrodeposition in which the working electrode was kept switching between two constant potentials and CV at a constant scan rate.…”

Section: Resultsmentioning

confidence: 99%

“…Huang and coworkers followed rather different approach for the preparation of Pt/C electrocatalysts for ORR. 44 In order to prevent aggregation of PtNPs, they first chemically deposited Pt and Pt-Pd-Ru alloy NPs onto the carbon support as nuclei, followed by CV and pulse electrodeposition in 2.5 mM H 2 PtCl 6 solution. They observed higher ORR activity of the prepared catalysts than that of commercial Pt/C.…”

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confidence: 99%

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Platinum Particles Electrochemically Deposited on Multiwalled Carbon Nanotubes for Oxygen Reduction Reaction in Acid Media

Hussain

Erikson

Kongi

et al. 2017

J. Electrochem. Soc.

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Platinum nanoparticles supported on multiwalled carbon nanotubes (Pt/MWCNT) were prepared using controlled electrochemical deposition from Ar-saturated H 2 PtCl 6 solution. The electrodeposition parameters were varied to observe change in the surface morphology and electrocatalytic activity of the Pt/MWCNT catalysts for oxygen reduction reaction (ORR). Surface morphology of the prepared catalysts was studied by scanning electron microscope (SEM) and scanning transmission electron microscope (STEM). For electrochemical characterization of the Pt/MWCNT electrocatalysts, CO-stripping and cyclic voltammetry (CV) experiments were performed in 0.05 M H 2 SO 4 solution. The ORR was studied in acid medium using the rotating disk electrode (RDE) method. The results obtained were analyzed and compared to those of commercial Pt/C. The size, shape and distribution of Pt particles as well as the electrochemical behavior of Pt/MWCNT modified electrodes showed strong dependence on the deposition parameters. The catalyst materials prepared by electrochemical deposition showed higher specific activities than commercial Pt/C catalyst. The Pt/MWCNT cathode materials showed remarkable stability during repetitive potential cycling in 0. Proton exchange membrane fuel cell (PEMFC) is identified as one of the most promising environmentally friendly sustainable energy conversion devices that efficiently convert fuel energy into electricity through electrochemical processes. [1][2][3] In comparison to the conventional internal combustion engine, low-temperature fuel cells are preferred for energy conversion in vehicles because of its green operating system, high efficiency and renewable energy resources.4,5 One of the most critical challenges for commercializing fuel cells is the development of more efficient, highly active and durable electrocatalysts to improve the sluggish kinetics of the oxygen reduction reaction (ORR). To date, Pt-based cathode catalysts have shown significantly high electrocatalytic activity toward the ORR as compared to other metals, alloys, core-shell structures, mixed metal oxides and nonnoble metal catalysts.6-15 Considerable efforts have been dedicated to minimize the amount of Pt loading and improve its electrocatalytic activity and durability, mainly because of its scarcity and high cost. [16][17][18][19]

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Section: Resultssupporting

confidence: 53%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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Platinum Particles Electrochemically Deposited on Multiwalled Carbon Nanotubes for Oxygen Reduction Reaction in Acid Media

Hussain

Erikson

Kongi

et al. 2017

J. Electrochem. Soc.

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“…Pt or Pt alloy NPs were pre-deposited onto a carbon support as nuclei, followed by Pt pulse electrodeposition. 82 This new approach was able to overcome aggregation issue of Pt NPs and improve their catalytic performance. The technology can also be used for the preparation of core/shell Pt/ C electrodes when non-Pt or Pt alloy NPs are used as seeding materials.…”

Section: -81mentioning

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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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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Salt‐recrystallization preparation of metal organic framework derived porous carbon support for highly‐efficient proton exchange membrane fuel cell

Xing

Zeng

et al. 2020

Int J Energy Res

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Summary We report a novel porous and high‐specific surface area carbon support material (C‐framework) for PEMFC by the salt‐recrystallization‐fixing HKUST‐1 template. We believe this will be a universal method to convert high‐temperature unstable MOF materials, such as HKUST‐1. NaCl crystals serve as completely closed nanoreactors, which facilitate graphitization and structure inheritance. Electrochemical evaluation showed that the C‐framework loaded with Pt nanoparticles exhibits high ORR activity and excellent electrochemical performance in acidic electrolytes. The PEMFC performance reached a maximum power density of 780 mW/cm2 under the H2/air testing condition in ultra‐low Pt loading (cathode 0.1 mg/cm2).

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Nanoparticle seeded pulse electrodeposition for preparing high performance Pt/C electrocatalysts

Abstract: openAccessArticle: Falsecover date: 2015-06-25pii: S0926-860X(15)00229-XHarvest Date: 2016-01-06 13:07:53issueName:Page Range: 55-55href scidir: http://www.sciencedirect.com/science/article/pii/S0926860X1500229XpubType

Cited by 16 publications

References 35 publications

Platinum Particles Electrochemically Deposited on Multiwalled Carbon Nanotubes for Oxygen Reduction Reaction in Acid Media

Platinum Particles Electrochemically Deposited on Multiwalled Carbon Nanotubes for Oxygen Reduction Reaction in Acid Media

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

Salt‐recrystallization preparation of metal organic framework derived porous carbon support for highly‐efficient proton exchange membrane fuel cell

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