Influence of Carbon Support on the Performance of Platinum Based Oxygen Reduction Catalysts in a Polymer Electrolyte Fuel Cell
Full article
| Общее |
Language:
Английский,
Genre:
Full article,
Status:
Published,
Source type:
Original
|
| Journal |
Journal of Applied Electrochemistry
ISSN: 0021-891X
, E-ISSN: 1572-8838
|
| Output data |
Year: 2007,
Volume: 37,
Number: 12,
Pages: 1429-1437
Pages count
: 9
DOI:
10.1007/s10800-007-9356-7
|
| Tags |
Carbon support, Oxygen reduction, PEMFC, Platinum catalyst |
| Authors |
Kaiser Jörg
1,2
,
Simonov Pavel A.
3
,
Zaikovskii Vladimir I.
3
,
Hartnig Christoph
1
,
Jörissen Ludwig
1
,
Savinova Elena R.
3
|
| Affiliations |
| 1 |
Division 3 Electrochemical Energy Storage and Conversion, Center for Solar Energy and Hydrogen Research, Baden-Wu¨rttemberg, Helmholtzstrasse 8, 89081 Ulm, Germany
|
| 2 |
Degussa-Initiators GmbH & Co. KG, Dr.-Gustav-Adolph-Str. 3, 82049 Pullach, Germany
|
| 3 |
Boreskov Institute of Catalysis, Russian Academy of Sciences, Pr. Akademika Lavrentieva 5, Novosibirsk 630090, Russia
|
|
Funding (2)
|
1
|
Federal Ministry of Education and Research
|
01 SF 0302
|
|
2
|
Russian Foundation for Basic Research
|
06-03-32737
|
Novel carbons from the Sibunit family prepared via pyrolysis of hydrocarbons [Yermakov YI, Surovikin VF, Plaksin GV, Semikolenov VA, Likholobov VA, Chuvilin AL, Bogdanov SV (1987) React Kinet Catal Lett 33:435] possess a number of attractive properties for fuel cell applications. In this work Sibunit carbons with BET surface areas ranging from ca. 20 to 420 m2 g−1 were used as supports for platinum and the obtained catalysts were tested as cathodes in a polymer electrolyte fuel cell. The metal loading per unit surface area of carbon support was kept constant in order to maintain similar metal dispersions (∼0.3). Full cell tests revealed a strong influence of the carbon support texture on cell performance. The highest mass specific activities at 0.85 V were achieved for the 40 and 30 wt.% Pt catalysts prepared on the basis of Sibunit carbons with BET surface areas of 415 and 292 m2 g−1. These exceeded the mass specific activities of conventional 20 wt.% Pt/Vulcan XC-72 catalyst by a factor of ca. 4 in oxygen and 6 in air feed. Analysis of the I–U curves revealed that the improved cell performance was related to the improved mass transport in the cathode layers. The mass transport overvoltages were found to depend strongly on the specific surface area and the texture of the support.