1.
Chem Commun (Camb)
; 46(47): 8950-2, 2010 Dec 21.
Artigo
em Inglês
| MEDLINE
| ID: mdl-20976331
RESUMO
Pd cathode catalysts for polymer electrolyte fuel cells have been covered with silica layers a few nanometres thick. The silica-coated Pd catalysts showed high activity and excellent durability for the oxygen reduction under the severe cathode conditions of PEFCs, while Pd catalysts without silica-coating were seriously deactivated under the same conditions. The coverage of Pd metal with silica prevents the diffusion of Pd species out of the silica layers.