IrPtRu Electrocatalysts: Surface Composition and Nanostructural Enhancements for Efficient Oxygen Evolution in PEMEL | Sciact - CRIS-система Института катализа

IrPtRu Electrocatalysts: Surface Composition and Nanostructural Enhancements for Efficient Oxygen Evolution in PEMEL Научная публикация

Журнал

International Journal of Hydrogen Energy
ISSN: 0360-3199 , E-ISSN: 1879-3487

Вых. Данные

Год: 2024, Том: 110, Страницы: 487-494 Страниц : 8 DOI: 10.1016/j.ijhydene.2025.02.244

Ключевые слова

Electrocatalyst; Oxygen evolution reaction; Ir−based electrocatalyst; Surface composition; Nanostructure; Electrochemical performance; Nanoparticle synthesis; Electrocatalysis

Авторы

Moguchikh E.A. ¹ , Pavlets A.S. ¹ , Novomlinskaya I.A. ¹ , Pankov I.V. ² , Aydakov E.E. ³ , Kaichev V.V. ³ , Nikolskiy A.V. ⁴ , Kozakov A.T. ⁴ , Alekseenko D.V. ¹ , Alekseenko A.A. ¹

Организации

1	Faculty of Chemistry, Southern Federal University, 7 Zorge St., Rostov-on-Don, 344090, Russia
2	Research Institute of Physical Organic Chemistry, Southern Federal University, 194/2 Stachki St., Rostov-on-Don, 344090, Russia
3	Department of Catalysis Research, Boreskov Institute of Catalysis, Prospect Ac. Lavrentieva 5, Novosibirsk, 630090, Russia
4	Southern Federal University, Research Institute of Physics, 194 Stachki st., Rostov-on-Don, 344090, Russia

Информация о финансировании (1)

Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)

FENW-2023-0016

Proton-exchange membrane electrolyzers (PEMELs) represent an efficient solution for converting water to “green” hydrogen. To enhance the profitability of PEMEL utilization, there is a need to reduce an iridium loading at the anode. In this study, we propose a simple one-pot wet synthesis for obtaining an IrPtRu catalyst with an iridium content of less than 60 wt%. The structure of the obtained trimetallic catalyst has thoroughly been investigated using various microscopy techniques (SEI, TEM, HRTEM, STEM, HAADF-STEM, and EDX). In addition, we have studied the surface chemical composition by XPS. The alloy catalyst is characterized by a uniform distribution of metal components, a narrow particle size dispersion, and a smaller nanoparticle size. The morphology of the synthesized material provides 1.9 times higher mass activity (A/gIr) in the oxygen evolution reaction at E = 1.53 V compared to the commercial iridium black, with an overpotential of 306 mV vs. 321 mV, respectively. Our study highlights the prospects of using trimetallic catalysts to enhance the efficiency of oxygen evolution reactions and reduce the consumption of rare metals.

Moguchikh E.A. , Pavlets A.S. , Novomlinskaya I.A. , Pankov I.V. , Aydakov E.E. , Kaichev V.V. , Nikolskiy A.V. , Kozakov A.T. , Alekseenko D.V. , Alekseenko A.A.
IrPtRu Electrocatalysts: Surface Composition and Nanostructural Enhancements for Efficient Oxygen Evolution in PEMEL
International Journal of Hydrogen Energy. 2024. V.110. P.487-494. DOI: 10.1016/j.ijhydene.2025.02.244 WOS Scopus OpenAlex

Опубликована в печати:	18 мар. 2024 г.
Поступила в редакцию:	16 дек. 2024 г.
Принята к публикации:	14 февр. 2025 г.
Опубликована online:	20 февр. 2025 г.

Web of science:	WOS:001444190600001
Scopus:	2-s2.0-85217953994
OpenAlex:	W4407778250

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