High-Temperature Synthesis of High-Entropy Alloy PtPd_CoNiCu Nanoparticles as a Catalyst for the Oxygen Reduction Reaction
Научная публикация
| Журнал |
International Journal of Molecular Sciences
ISSN: 1422-0067
, E-ISSN: 1661-6596
|
| Вых. Данные |
Год: 2025,
Том: 26,
Номер: 23,
Номер статьи
: 11504,
Страниц
: 17
DOI:
10.3390/ijms262311504
|
| Ключевые слова |
platinum-based electrocatalysts; high-entropy alloys; multicomponent systems; high-temperature synthesis; heat treatment; oxygen reduction reaction; durability |
| Авторы |
Nevelskaya Alina
1,2
,
Gavrilova Anna
1
,
Lyanguzov Nikolay
3
,
Tolstunov Mikhail
2
,
Pankov Ilya
4
,
Kremneva Anna
5
,
Gerasimov Evgeny
5
,
Kokhanov Andrey
1
,
Belenov Sergey
1
|
| Организации |
| 1 |
Faculty of Chemistry, Southern Federal University, 7 Zorge St., Rostov-on-Don 344090, Russia
|
| 2 |
Federal Research Center the Southern Scientific Center of the Russian Academy of Sciences (SSC RAS), 41 Chekhov Ave., Rostov-on-Don 344006, Russia
|
| 3 |
Department of Physics, Southern Federal University, 5 Zorge St., Rostov-on-Don 344090, Russia
|
| 4 |
Research Institute of Physical Organic Chemistry, Southern Federal University, 194/2 Stachki St., Rostov-on-Don 344090, Russia
|
| 5 |
Boreskov Institute of Catalysis, Ac. Lavrentieva Ave. 5, Novosibirsk 630090, Russia
|
|
Информация о финансировании (1)
|
1
|
Российский научный фонд
|
25-79-20045 (125070307890-6)
|
The aim of this work was high-temperature synthesis of PtPdCoNiCu/C nanoparticles with high-entropy alloy (HEA) structure as catalysts for oxygen reduction reaction. The materials were synthesized using a highly dispersed PtPd/C support, which was impregnated with Cu, Ni, and Co precursors followed by their precipitation with an alkali. Subsequently, the material was subjected to thermal treatment in a tube furnace at 600 °C for 1 h in a stream of argon containing 5% hydrogen. In combination with HRTEM, element mapping and line scan, XRD, and XPS data, these results confirm the successful synthesis of five-component PtPdCoNiCu high-entropy alloy nanoparticles on the surface of the carbon support. The obtained materials are characterized by a high electrochemical surface area of up to 63 m2/g(PGM), as determined by hydrogen adsorption/desorption and CO-stripping, and a high specific oxygen reduction reaction (ORR) activity of approximately 269 A/g(PGM) at 0.9 V vs. RHE. The synthesized material demonstrated outstanding stability, as confirmed by an accelerated stress test of 10,000 cycles. After the test, the electrochemical surface area decreased by only 12%, while the catalytic activity for ORR even increased. The proposed synthetic strategy opens a new pathway for obtaining promising highly stable five-component HEA nanoparticles of various compositions for application in catalysts.