Electroreduction of oxygen on palladium nanoparticles supported on nitrogen-doped graphene nanosheets

Jukk, Kristel; Kongi, Nadežda; Matisen, Leonard; Kallio, Tanja; Kontturi, Kyösti; Tammeveski, Kaido

doi:10.1016/j.electacta.2014.06.020

Cited by 65 publications

(32 citation statements)

References 67 publications

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“…6(A) and 6 (B), respectively, and the corresponding kinetic parameters of the ORR are shown in Table 3. It can be observed that the Tafel slopes can be divided into two regions: (1) at low overpotentials, the Tafel slopes of the PdO/C-xh (x = 2, 4,8)catalysts are about -60 mV dec À1 , comparable to those observed on the bulk Pd, Pd film and the commercial Pd/C [47,50]; (2) at high overpotentials, the Tafel slope of the Pd/C is about À123 mV dec À1 , close to the value reported by Jiang et al [19,47], while the slopes of the PdO/C-4h and PdO/C increase up to about À138 mV dec À1 , the slightly higher values were also observed on cubic and spherical Pd nanoparticles [27,51]. The Tafel slopes of the PdO/C-0.5 h and PdO/CÀ1 h are all lower than those of Pd/C.…”

Section: Catalystssupporting

confidence: 88%

“…At present, the research about Pd used as the ORR catalyst mainly focused on the effects of the size [19,20] and shape [21,22] of Pd particles, the addition of other metals [23][24][25] and various support material, such as graphene [26,27], multi-walled carbon nanotube composites [13,14], manganese oxides [28,29], Co 3 W 3 C [16], et al on the ORR activity. However, the valence states of Pd involved in all these work mentioned above are metallic.…”

Section: Introductionmentioning

confidence: 99%

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Carbon supported PdO with improved activity and stability for oxygen reduction reaction in alkaline solution

Rao

Yuan

et al. 2014

Electrochimica Acta

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Section: Catalystssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Carbon supported PdO with improved activity and stability for oxygen reduction reaction in alkaline solution

Rao

Yuan

et al. 2014

Electrochimica Acta

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“…[50][51][52][53][54][55] Figure 10 represents Tafel plots constructed on the basis of the RDE data shown in Figure 9. It has been reported previously, that pyridinic and/or graphitic N are actually responsible for the high ORR performance of N-doped carbon materials.…”

Section: Electrochemical Reduction Of Oxygenmentioning

confidence: 99%

Oxygen Electroreduction on Pt Nanoparticles Deposited on Reduced Graphene Oxide and N‐doped Reduced Graphene Oxide Prepared by Plasma‐assisted Synthesis in Aqueous Solution

et al. 2018

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Platinum nanoparticles were deposited on reduced graphene oxide (rGO) and nitrogen-doped rGO (rGOÀN) by He/H 2 plasma jet treatment of H 2 PtCl 6 aqueous solution for electroreduction of oxygen. Physical characterization of the prepared catalysts was performed by scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. Electrochemical characterization was carried out by cyclic voltammetry and CO-stripping techniques. The oxygen reduction reaction (ORR) activity of the prepared Pt/rGO and Pt/ rGOÀN catalyst materials was investigated using the rotating disk electrode method in 0.1 M KOH and 0.05 M H 2 SO 4 . In both acidic and alkaline electrolytes, the catalyst materials prepared by the plasma jet method demonstrated superior electrocatalytic properties compared to that of commercial 20 wt% Pt/ C catalyst. Specific activity values for the ORR in acid electrolyte were 2-fold and in alkaline media more than 3-fold higher than that obtained for commercial Pt/C catalyst.

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“…This was suggested to be due to nitrogen interactions with palladium [18]. However, Jukk et al successfully prepared PdNP/nitrogendoped graphene composites that exhibited excellent electrocatalytic activity towards the ORR [19]. Pd nanoparticles supported on N-doped ordered mesoporous graphitic carbon nanospheres also showed enhanced electrocatalytic activity and stability, thanks to enriched mesopores, large active surface area and homogeneous nanoparticles distribution [20].…”

Section: Introductionmentioning

confidence: 99%

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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Electroreduction of oxygen on palladium nanoparticles supported on nitrogen-doped graphene nanosheets

Cited by 65 publications

References 67 publications

Carbon supported PdO with improved activity and stability for oxygen reduction reaction in alkaline solution

Carbon supported PdO with improved activity and stability for oxygen reduction reaction in alkaline solution

Oxygen Electroreduction on Pt Nanoparticles Deposited on Reduced Graphene Oxide and N‐doped Reduced Graphene Oxide Prepared by Plasma‐assisted Synthesis in Aqueous Solution

Oxygen electroreduction on carbon-supported Pd nanocubes in acid solutions

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