Effect of the Composition and Structure of Pt(Cu)/C Electrocatalysts on Their Stability under Different Stress Test Conditions
- Авторлар: Moguchikh E.1, Alekseenko A.1, Guterman V.1, Novikovsky N.1, Tabachkova N.2, Menshchikov V.1
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Мекемелер:
- Faculty of Chemistry
- National University of Science and Technology MISiS
- Шығарылым: Том 54, № 11 (2018)
- Беттер: 979-989
- Бөлім: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/189879
- DOI: https://doi.org/10.1134/S102319351813030X
- ID: 189879
Дәйексөз келтіру
Аннотация
Stability is one of the most important characteristics of electrocatalysts used in low-temperature fuel cells with a proton exchange membrane. The corrosion-morphological stability of supported electrocatalysts containing platinum and platinum-copper nanoparticles with ~20 wt % Pt was evaluated under the conditions of voltammetry stress testing corresponding to different degradation mechanisms. The effect of the difference in the architecture of Pt–Cu nanoparticles on the stability of catalysts and changes in their composition as a result of stress tests were studied. At close values of the electrochemically active surface area (ECAS), the carbon-supported bimetallic catalysts demonstrated significantly higher stability compared to the commercial Pt/C catalysts. The Pt(Cu)/C catalyst obtained by sequential deposition of copper and platinum showed the highest resistance to the degradation and selective dissolution of copper during the testing.
Авторлар туралы
E. Moguchikh
Faculty of Chemistry
Email: an-an-alekseenko@yandex.ru
Ресей, Rostov-on-Don, 344090
A. Alekseenko
Faculty of Chemistry
Хат алмасуға жауапты Автор.
Email: an-an-alekseenko@yandex.ru
Ресей, Rostov-on-Don, 344090
V. Guterman
Faculty of Chemistry
Email: an-an-alekseenko@yandex.ru
Ресей, Rostov-on-Don, 344090
N. Novikovsky
Faculty of Chemistry
Email: an-an-alekseenko@yandex.ru
Ресей, Rostov-on-Don, 344090
N. Tabachkova
National University of Science and Technology MISiS
Email: an-an-alekseenko@yandex.ru
Ресей, Moscow, 119991
V. Menshchikov
Faculty of Chemistry
Email: an-an-alekseenko@yandex.ru
Ресей, Rostov-on-Don, 344090