One-pot synthesis of transition metal ion-chelating ordered mesoporous carbon/carbon nanotube composites for active and durable fuel cell catalysts
Artikel i vetenskaplig tidskrift, 2017

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.

Cyanamide

PEM fuel cell

Carbon nanotubes

Ordered mesoporous carbon

Non-precious metal catalyst

Författare

Johanna Dombrovskis

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Teknisk ytkemi

Anders Palmqvist

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Teknisk ytkemi

Journal of Power Sources

0378-7753 (ISSN)

Vol. 357 87-96

Ämneskategorier

Oorganisk kemi

Materialkemi

DOI

10.1016/j.jpowsour.2017.04.038

Mer information

Skapat

2017-10-08