Size-Dependent Activity of Palladium Nanoparticles for Oxygen Electroreduction in Alkaline Solutions

Jiang, Luhua; Hsu, Andrew T.; Chu, Deryn; Chen, R.

doi:10.1149/1.3098478

Cited by 188 publications

(158 citation statements)

References 33 publications

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“…Comparison of the activities of the Pd nanocubes prepared by different methods (20% Pd/C catalysts) reveals that the samples prepared using CTAB have somewhat higher specific activity than those prepared using PVP (Table 1). This is probably not due to a change in particle size as usually the particle size effect is observed for particles smaller than 10 nm [15,16]. Also an opposite trend for Pd catalysts has been observed so that the specific activities increase with increasing the particle size [42,43].…”

Section: Oxygen Reduction Reaction Studiesmentioning

confidence: 86%

“…The mass activity increased 1.3 times when particle size increased from 3 to 5 nm, but then decreased with further increasing the particle size [15]. In perchloric acid solution the size effect is more pronounced and the specific activity has a maximum at the Pd nanoparticle size of about 5 to 6 nm, while the mass activity increases with decreasing particle size [16].…”

Section: Introductionmentioning

confidence: 94%

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Oxygen electroreduction on carbon-supported Pd nanocubes in acid solutions

Erikson

Lüsi

Sarapuu

et al. 2016

Electrochimica Acta

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Please cite this article as: Heiki Erikson, Madis Lüsi, Ave Sarapuu, Kaido Tammeveski, Jose Solla-Gullón, Juan M.Feliu, Oxygen electroreduction on carbon-supported Pd nanocubes in acid solutions, Electrochimica Acta http://dx.doi.org/10.1016/j.electacta. 2015.11.125 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Oxygen electroreduction on carbon-supported Pd nanocubes in acid solutions Highlights• Carbon-supported Pd nanocubes of three different size and loading were prepared• The specific activity for oxygen reduction reaction is independent of Pd content• Pd nanocubes possess higher specific activity for ORR than spherical Pd nanoparticles• The ORR on carbon-supported Pd nanocubes proceed mainly via 4-electron pathway• Tafel behaviour of ORR on carbon-supported Pd nanocubes is similar to that of bulk Pd AbstractThe oxygen reduction reaction (ORR) was studied on carbon-supported cubic palladium nanoparticles of different sizes (~30 nm, ~10 nm and ~7 nm). Cetyltrimethylammonium bromide (CTAB) and polyvinylpyrrolidone (PVP) were used as capping agents to prepare the nanocubes and Pd content in the catalyst samples was 20 and 50 wt%. The surface morphology of the prepared materials was studied by transmission electron microscopy (TEM). The catalyst materials were electrochemically characterised by cyclic voltammetry and CO stripping experiments. The rotating disk electrode (RDE) method was employed for ORR studies in 0.5 M H 2 SO 4 and 0.1 M HClO 4 solutions. The ORR results revealed that the specific activity of cubic Pd nanoparticles is higher than that of spherical Pd particles and does not depend on the Pd content in the catalyst, but decreases with decreasing the size of Pd nanocubes. Mass activity of Pd nanocubes increased with decreasing the particle size. The ORR proceeds mainly via 4-electron pathway and the reaction mechanism is similar to that on bulk Pd.

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Section: Oxygen Reduction Reaction Studiesmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 94%

Oxygen electroreduction on carbon-supported Pd nanocubes in acid solutions

Erikson

Lüsi

Sarapuu

et al. 2016

Electrochimica Acta

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“…• C/min and maintained for 2 h. 14 The obtained catalysts are denoted as Pd/C-300C, Pd/C-400C, Pd/C-500C and Pd/C-600C, respectively. Diameters of Pd nanoparticles were measured from transmission electron microscopy (TEM) images obtained on a JEOL JEM-2010F TEM.…”

Section: Methodsmentioning

confidence: 99%

“…Particle size effect on Pd/C has been investigated for various reactions including ORR in both acid and base 14,15 and formic acid oxidation reaction in acid. 16 For HOR/HER, studies are mainly focused on Pt.…”

mentioning

confidence: 99%

Size-Dependent Hydrogen Oxidation and Evolution Activities on Supported Palladium Nanoparticles in Acid and Base

Zheng

Zhou

et al. 2016

J. Electrochem. Soc.

117

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The study of particle size effect provides the fundamental understanding of the active sites that is necessary for guiding the design and development of better catalysts. Here we report a systematic investigation of particle size effect of hydrogen oxidation and evolution reaction (HOR/HER) on carbon supported Pd nanoparticles with sizes ranging from 3 to 42 nm in both acidic and alkaline electrolytes using rotating disk electrode (RDE) method. Similar particle size effect was obtained in both acid and base: the HOR/HER activity in terms of specific exchange current density increases as Pd particle size increases from 3 to 19 nm, and then reaches a plateau with activity similar to that of bulk Pd. The enhanced activity with rising particle size could be attributed to the increased ratio of the sites with weaker hydrogen binding energy revealed in cyclic voltammograms (CVs). Pd catalysts with different Pd particle sizes all showed much higher HOR/HER activity in acid than in base, which is largely attributed to their smaller hydrogen binding energy in acid evidenced by the lower potential of the underpotential deposited hydrogen (Hupd) peak in CVs as well as the smaller activation energy in acid.

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“…Figure 5 shows the Levich plots for the GNC multilayer electrode before and after Pd deposition using the data at −600 mV of figure 4. Linear relations are obtained in both cases with the slopes corresponding to the 2-and 4-electron ORR processes described below for the former and the latter, respectively [39]: Thus, a submonolayer amount of Pd on GNCs significantly enhanced the ORR activity, and the activity of the present Pd modified GNC electrode was superior to those of Pd(111) and carbon-supported Pd nanoparticles [35,40,41]. For a more quantitative analysis, one needs to obtain the potential dependent rate constant of the ORR.…”

Section: Catalytic Activity Of the Multilayer Of Bare And Pd Modifiedmentioning

confidence: 99%

Construction of multilayers of bare and Pd modified gold nanoclusters and their electrocatalytic properties for oxygen reduction

Harada

Noguchi

Zanetakis

et al. 2011

Science and Technology of Advanced Materials

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Multilayers of gold nanoclusters (GNCs) coated with a thin Pd layer were constructed using GNCs modified with self-assembled monolayers (SAMs) of mercaptoundecanoic acid and a polyallylamine hydrochloride (PAH) multilayer assembly, which has been reported to act as a three-dimensional electrode. SAMs were removed from GNCs by electrochemical anodic decomposition and then a small amount of Pd was electrochemically deposited on the GNCs. The kinetics of the oxygen reduction reaction (ORR) on the Pd modified GNC/PAH multilayer assembly was studied using a rotating disk electrode, and a significant increase in the ORR rate was observed after Pd deposition. Electrocatalytic activities in alkaline and acidic solutions were compared both for the GNC multilayer electrode and Pd modified GNC electrode.

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Size-Dependent Activity of Palladium Nanoparticles for Oxygen Electroreduction in Alkaline Solutions

Cited by 188 publications

References 33 publications

Oxygen electroreduction on carbon-supported Pd nanocubes in acid solutions

Oxygen electroreduction on carbon-supported Pd nanocubes in acid solutions

Size-Dependent Hydrogen Oxidation and Evolution Activities on Supported Palladium Nanoparticles in Acid and Base

Construction of multilayers of bare and Pd modified gold nanoclusters and their electrocatalytic properties for oxygen reduction

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