Development of Tailored High-Performance and Durable Electrocatalysts for Advanced PEM Fuel Cells.

0473748 - ÚCHP 2018 RIV GB eng J - Článek v odborném periodiku
Larsen, M.J. - Morales, I.J. - Cavaliere, S. - Zajac, J. - Jones, J.D. - Rozière, J. - Kaluža, Luděk - Gulková, Daniela - Odgaard, M.
Development of Tailored High-Performance and Durable Electrocatalysts for Advanced PEM Fuel Cells.
International Journal of Hydrogen Energy. Roč. 42, č. 10 (2017), s. 7166-7176. ISSN 0360-3199. E-ISSN 1879-3487.
[International Conference on Innovative Electrochemical Energy Materials and Technologies (EEMT). Nanjing, 08.11.2015-11.11.2015]
Grant CEP: GA MŠMT(CZ) 7HX13003
GRANT EU: European Commission(XE) 303466 - IMMEDIATE
Institucionální podpora: RVO:67985858
Klíčová slova: fuel-cell catalyst * platinum deposition * oxygen reduction
Obor OECD: Physical chemistry
Impakt faktor: 4.229, rok: 2017

A family of novel carbon materials with intermediate surface area and varying morphology and surface chemistry were used to prepare Pt/C catalysts by two different preparation procedures, a chemical impregnation method and a microwave-assisted polyol method. The catalysts were thoroughly characterized, and their electrochemical performance and stability were investigated with rotating disc electrode (RDE) cyclic voltammetric (CV) measurements. The intermediate-surface-area carbon supports gave catalysts with much greater support stability than a widely used standard catalyst. The novel catalysts had lower electrochemical surface area than the reference, but their specific electrocatalytic activity towards the oxygen-reduction reaction (ORR) was much higher, and some of them also featured higher mass-specific ORR activity than the reference. The series of catalysts prepared by the microwave-assisted polyol method featured smaller Pt nanoparticles and higher activities than those prepared by impregnation. On the other hand, the impregnated catalysts showed better durability of the Pt particles. The most promising catalysts were selected and elaborated in further optimized preparation procedures to obtain quantities sufficient for their use in proton-exchange membrane fuel cells (PEMFCs).
Trvalý link: http://hdl.handle.net/11104/0270890