Реферат: Insufficient understanding of the mechanism of the cathodic oxygen reduction reaction puts constraints on the improvement of the efficiency of polymer electrolyte fuel cells (PEMFCs). We apply ordered catalytic layers based on vertically aligned carbon nanofilaments and combine experimental rotating ring-disk studies with mathematical modeling for shedding light on the mechanism of the oxygen reduction reaction on Pt nanoparticles. Based on the experimental and simulation evidence we propose a dual path ORR mechanism which comprises a “direct 4e−” and a “series 2e− + 2e−” pathway and explains switching between the two. For the first time we show that below 0.8 V the “direct” path may be discarded and the ORR predominantly occurs via H2O2 mediated pathway, while in the potential interval between ca. 0.8 V and the onset of the ORR the “direct” path is dominating.

Библиографическая ссылка: Ruvinskiy P.S. , Bonnefont A. , Pham-Huu C. , Savinova E.R.
Using Ordered Carbon Nanomaterials for Shedding Light on the Mechanism of the Cathodic Oxygen Reduction Reaction
Langmuir. 2011. V.27. N14. P.9018-9027. DOI: 10.1021/la2006343 WOS Scopus РИНЦ CAPlusCA OpenAlex

Даты:

Поступила в редакцию:	17 февр. 2011 г.
Принята к публикации:	18 апр. 2011 г.
Опубликована online:	14 июн. 2011 г.
Опубликована в печати:	19 июл. 2011 г.

Идентификаторы БД:

Web of science:	WOS:000292617800051
Scopus:	2-s2.0-79960285284
РИНЦ:	28611398
Chemical Abstracts:	2011:751094
Chemical Abstracts (print):	155:107706
OpenAlex:	W2318122794

Цитирование в БД:

БД	Цитирований
Web of science	73
Scopus	74
OpenAlex	78

Альметрики: