International Journal of Hydrogen Energy, volume 43, issue 7, pages 3676-3687
Pt/C electrocatalysts based on the nanoparticles with the gradient structure
Alekseenko A. A.
1
,
Guterman V. E.
1
,
Belenov Sergey
1
,
Menshikov V S
1
,
Tabachkova, N. Yu.
2
,
Safronenko O I
1
,
Moguchikh E A
1
Publication type: Journal Article
Publication date: 2018-02-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 7.2
ISSN: 03603199
Condensed Matter Physics
Energy Engineering and Power Technology
Fuel Technology
Renewable Energy, Sustainability and the Environment
Abstract
The architecture of bimetallic nanoparticles has strong influence on durability and activity of PtM/C electrocatalysts in the oxygen electroreduction (ORR) and the methanol electrooxidation reactions (MOR). In the present study the Pt0.8(Cu)/C electrocatalyst was obtained by the methods of successive multistage reduction of platinum and copper from the solutions of their precursors while platinum concentration in the matrix solution was increasing step by step. The composition, structural characteristics and electrochemical behavior of this material were compared with the Pt1.0Cu/C catalyst based on the nanoparticles of a solid solution, which was obtained by the combined single-step chemical reduction of precursors, as well as with a commercial Pt/C sample with the same Pt-loading (20% by weight). The catalyst based on the Pt–Cu gradient nanoparticles demonstrated the highest corrosion-morphological stability in the stress-test, as well as the highest activity in ORR and MOR in the HClO4 solutions. Both of the studied bimetallic catalysts lose a significant amount of copper during the standardizing cycling and the stress-test. In the stabilized composition of the “gradient catalyst” the residual copper content, however, is considerably higher than that of the catalyst with the solid solution nanoparticles. The positive features of the electrochemical behavior of Pt0.8(Cu)/C catalyst arise apparently due to the faster formation of a durable protective layer of platinum on the surface of nanoparticles in the process of functioning, compared to the analogue based on the nanoparticles of the solid solution. High stability and activity of Pt0.8(Cu)/C compared to the Pt/C analogue are associated with the larger size of the nanoparticles and the promoting influence of residual copper on the catalytical activity of platinum.
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- We do not take into account publications that without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Alekseenko A. A. et al. Pt/C electrocatalysts based on the nanoparticles with the gradient structure // International Journal of Hydrogen Energy. 2018. Vol. 43. No. 7. pp. 3676-3687.
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Alekseenko A. A., Guterman V. E., Belenov S., Menshikov V. S., Tabachkova, N. Y., Safronenko O. I., Moguchikh E. A. Pt/C electrocatalysts based on the nanoparticles with the gradient structure // International Journal of Hydrogen Energy. 2018. Vol. 43. No. 7. pp. 3676-3687.
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TY - JOUR
DO - 10.1016/j.ijhydene.2017.12.143
UR - https://doi.org/10.1016%2Fj.ijhydene.2017.12.143
TI - Pt/C electrocatalysts based on the nanoparticles with the gradient structure
T2 - International Journal of Hydrogen Energy
AU - Alekseenko, A. A.
AU - Guterman, V. E.
AU - Belenov, Sergey
AU - Menshikov, V S
AU - Tabachkova,, N. Yu.
AU - Safronenko, O I
AU - Moguchikh, E A
PY - 2018
DA - 2018/02/01 00:00:00
PB - Elsevier
SP - 3676-3687
IS - 7
VL - 43
SN - 0360-3199
ER -
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@article{2018_Alekseenko,
author = {A. A. Alekseenko and V. E. Guterman and Sergey Belenov and V S Menshikov and N. Yu. Tabachkova, and O I Safronenko and E A Moguchikh},
title = {Pt/C electrocatalysts based on the nanoparticles with the gradient structure},
journal = {International Journal of Hydrogen Energy},
year = {2018},
volume = {43},
publisher = {Elsevier},
month = {feb},
url = {https://doi.org/10.1016%2Fj.ijhydene.2017.12.143},
number = {7},
pages = {3676--3687},
doi = {10.1016/j.ijhydene.2017.12.143}
}
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MLA
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Alekseenko, A. A., et al. “Pt/C electrocatalysts based on the nanoparticles with the gradient structure.” International Journal of Hydrogen Energy, vol. 43, no. 7, Feb. 2018, pp. 3676-3687. https://doi.org/10.1016%2Fj.ijhydene.2017.12.143.