PtPdCo ternary electrocatalyst for methanol tolerant oxygen reduction reaction in direct methanol fuel cell

Autor:	Ok-Hee Kim, Yong-Hun Cho, Dong Young Chung, Heeman Choe, Yoon-Hwan Cho, Yung-Eun Sung
Rok vydání:	2014
Předmět:	Process Chemistry and Technology Inorganic chemistry Membrane electrode assembly Electrocatalyst Catalysis Sodium borohydride chemistry.chemical_compound Direct methanol fuel cell chemistry Methanol Rotating disk electrode Methanol fuel General Environmental Science
Zdroj:	Applied Catalysis B: Environmental. :309-315
ISSN:	0926-3373
DOI:	10.1016/j.apcatb.2014.02.016
Popis:	a b s t r a c t Carbon-supported PtPdCo/C ternary electrocatalysts were prepared by using the sodium borohydride method for use as a cathode catalyst in direct methanol fuel cells (DMFCs). The electrocatalyst particles with a size of 2-3 nm were uniformly dispersed on carbon supports. PtPdCo/C showed a similar per- formance compared to commercial Pt/C in the oxygen reduction reaction (ORR) tests conducted with a rotating disk electrode (RDE). On the other hand, PtPdCo/C showed higher methanol tolerance than Pt/C in acidic media with methanol. In the single-cell tests, the performance of the PtPdCo/C electrocatalyst was approximately 50% higher than that of Pt/C owing to its enhanced methanol tolerance. In the long- term operation test with the single-cell, the maximum power density of PtPdCo/C decreased only by 14% from its initial value. These results indicate that the PtPdCo/C catalyst is potentially an alternative electrocatalyst for the cathode in DMFCs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b493b39a477d9b5f0385ed7aed61a9f8 https://doi.org/10.1016/j.apcatb.2014.02.016 Zobrazit plný text záznamu Full Text from ScienceDirect