Platinum Group Metal-Free NiMo Hydrogen Oxidation Catalysts: High Performance and Durability in Alkaline Exchange Membrane Fuel Cells Научная публикация
Журнал |
Journal of Materials Chemistry A, Materials for Energy and Sustainability
ISSN: 2050-7488 , E-ISSN: 2050-7496 |
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Вых. Данные | Год: 2017, Том: 5, Номер: 46, Страницы: 24433-24443 Страниц : 11 DOI: 10.1039/c7ta08718g | ||||||||||||||
Ключевые слова | REDUCTION REACTION CATALYSTS; EVOLUTION REACTION; CATHODE CATALYST; OXYGEN; OXIDE; WATER; ACID; ELECTROCATALYSTS; ELECTROLYTES; STABILITY | ||||||||||||||
Авторы |
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Организации |
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Информация о финансировании (1)
1 | Office of Energy Efficiency and Renewable Energy | DE-EE0006962 |
Реферат:
We introduce a new platinum group metal-free (PGM-free) hydrogen oxidation electrocatalyst with superior performance in anodes of alkaline exchange membrane fuel cells (AEMFCs). A carbon-supported bimetallic nickel-molybdenum catalyst was synthesized by thermal reduction of transition metal precursors on the surface of a carbon support (KetjenBlack 600J). The mass-weighted activity of 4.5 A gMe-1 determined in a liquid electrolyte 0.1 M NaOH using a rotating disk electrode (RDE) technique is comparable to the value reported for Pd/C with a comparable particle size under similar conditions. This NiMo/KB catalyst was integrated in a membrane electrode assembly (MEA) using an alkaline exchange membrane and ionomer. Single AEMFC tests performed in a H2/O2 configuration resulted in a record power density output of 120 mW cm-2 at 0.5 V, the MEA was found to be durable under the conditions of potential hold of 0.7 V for 115 h. For the first time, operando X-ray computed tomography (CT) experiments were performed demonstrating liquid water formation at the PGM-free anode during cell operation, and in situ ambient pressure X-ray photoelectron spectroscopy (APXPS) and X-ray absorption spectroscopy (APXAS) were used to study the role of molybdenum in hydrogen adsorption.
Библиографическая ссылка:
Kabir S.
, Lemire K.
, Artyushkova K.
, Roy A.
, Odgaard M.
, Schlueter D.
, Oshchepkov A.
, Bonnefont A.
, Savinova E.
, Sabarirajan D.C.
, Mandal P.
, Crumlin E.J.
, Zenyuk I.V.
, Atanassov P.
, Serov A.
Platinum Group Metal-Free NiMo Hydrogen Oxidation Catalysts: High Performance and Durability in Alkaline Exchange Membrane Fuel Cells
Journal of Materials Chemistry A, Materials for Energy and Sustainability. 2017. V.5. N46. P.24433-24443. DOI: 10.1039/c7ta08718g WOS Scopus РИНЦ
Platinum Group Metal-Free NiMo Hydrogen Oxidation Catalysts: High Performance and Durability in Alkaline Exchange Membrane Fuel Cells
Journal of Materials Chemistry A, Materials for Energy and Sustainability. 2017. V.5. N46. P.24433-24443. DOI: 10.1039/c7ta08718g WOS Scopus РИНЦ
Даты:
Поступила в редакцию: | 2 окт. 2017 г. |
Принята к публикации: | 6 нояб. 2017 г. |
Опубликована online: | 6 нояб. 2017 г. |
Опубликована в печати: | 14 дек. 2017 г. |
Идентификаторы БД:
Web of science | WOS:000416340300047 |
Scopus | 2-s2.0-85036478940 |
РИНЦ | 35480236 |
Chemical Abstracts | 2017:1789116 |
Chemical Abstracts (print) | 168:7390 |
OpenAlex | W2767458687 |