Pt nanoparticle modified single walled carbon nanotube network electrodes for electrocatalysis: Control of the specific surface area over three orders of magnitude

Miller, Thomas S.; Sansuk, Sira; Lai, Stanley C. S.; Macpherson, Julie V.; Unwin, Patrick R.

doi:10.1016/j.cattod.2014.06.022

Cited by 24 publications

(27 citation statements)

References 51 publications

(62 reference statements)

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“…The four-electron pathway for Pt-based catalysts prepared by electrodeposition method has been reported earlier. 37,43,46 Figure 6 displays a comparison of the ORR polarization curves of Pt/MWCNT-A (Figure 6a) and Pt/MWCNT-B (Figure 6b) with commercial Pt/C measured at 1900 rpm. The values of half-wave potential (E 1/2 ) calculated from the RDE data are given in Table I.…”

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%

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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: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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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“…Nonetheless, its electrocatalytic activity is significantly affected by the shape and surface morphology of CNTs. This meant that the application rate of Pt could be enhanced because Pt nanoparticle usage has the ability to increase the performance of the catalyst [65,66] and to scatter more effectively on the surface of the support. This meant that the application rate of Pt could be enhanced because Pt nanoparticle usage has the ability to increase the performance of the catalyst [65,66] and to scatter more effectively on the surface of the support.…”

Section: Utilizing Pt Nanoparticlesmentioning

confidence: 99%

Benefits of using carbon nanotubes in fuel cells: a review

Akbari

Buntat

2016

Int. J. Energy Res.

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Summary A carbon nanotube (CNT) is a nanoscale cylindrical tube formed from a single atomic layer of carbon atoms. CNTs are known to possess several unique characteristics, including high thermal and electrical conductivity, superior mechanical strength and chemical stability, as well as a high surface area. These characteristics, in addition to the fundamental advantages of being a carbon material, cause CNTs to be a favorable candidate for fuel cell applications. In this current assessment, past findings in relation to CNTs are summarized. Additionally, future prospects for microscopic study of CNTs are also presented. Copyright © 2016 John Wiley & Sons, Ltd.

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“…Many efforts have been made to decrease the loadings of noble metals and maximize their catalytic activity to methanol oxidation reaction, by using various strategies to optimize the metal particle size, size distribution, morphology, dispersion and stability [1]. The most used strategy is to develop novel support materials with unique structure, large specific surface area and high electrical conductivity, such as single walled carbon nanotubes [3], graphenes [4,5], graphene-based nanocomposites [6][7][8], conductive polymers [9,10], and mesoporous carbon [11].…”

Section: Introductionmentioning

confidence: 99%

Diffusion-restricted electrodeposition of platinum on solid carbon paste for electrocatalytic oxidation of methanol

Bao

Wang

et al. 2016

Catalysis Today

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Pt nanoparticle modified single walled carbon nanotube network electrodes for electrocatalysis: Control of the specific surface area over three orders of magnitude

Cited by 24 publications

References 51 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

Benefits of using carbon nanotubes in fuel cells: a review

Diffusion-restricted electrodeposition of platinum on solid carbon paste for electrocatalytic oxidation of methanol

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