CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

One-pot synthesis of transition metal ion-chelating ordered mesoporous carbon/carbon nanotube composites for active and durable fuel cell catalysts

Johanna Dombrovskis (Institutionen för kemi och kemiteknik, Teknisk ytkemi) ; Anders Palmqvist (Institutionen för kemi och kemiteknik, Teknisk ytkemi)
Journal of Power Sources (03787753). Vol. 357 (2017), p. 87-96.
[Artikel, refereegranskad vetenskaplig]

Development of non-precious metal catalysts for the oxygen reduction reaction (ORR) in proton exchange membrane (PEM) fuel cells with high activity and durability and with optimal water management properties is of outmost technological importance and highly challenging. Here we study the possibilities offered through judicious selection of small molecular precursors used for the formation of ordered mesoporous carbon-based non-precious metal ORR catalysts. By combining two complementary precursors, we present a one-pot synthesis that leads to a composite material consisting of transition metal ion-chelating ordered mesoporous carbon and multi-walled carbon nanotubes (TM-OMC/CNT). The resulting composite materials show high specific surface areas and a carbon structure that exhibits graphitic signatures. The synthesis procedure allows for tuning of the carbon structure, the surface area, the pore volume and the ratio of the two components of the composite. The TM-OMC/CNT composites were processed into membrane electrode assemblies and evaluated in single cell fuel cell measurements where they showed a combination of good ORR activity and very high durability.

Nyckelord: Carbon nanotubes, Cyanamide, Non-precious metal catalyst, Ordered mesoporous carbon, PEM fuel cell



Denna post skapades 2017-06-14. Senast ändrad 2017-07-20.
CPL Pubid: 249783

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för kemi och kemiteknik, Teknisk ytkemi

Ämnesområden

Materialkemi
Oorganisk kemi

Chalmers infrastruktur