Search: id:"swepub:oai:DiVA.org:su-95081" >
Ordered mesoporous ...
Ordered mesoporous porphyrinic carbons with very high electrocatalytic activity for the oxygen reduction reaction
-
Cheon, Jae Yeong (author)
-
Kim, Taeyoung (author)
-
Choi, YongMan (author)
-
show more...
-
Jeong, Hu Young (author)
-
Kim, Min Gyu (author)
-
Sa, Young Jin (author)
-
Kim, Jaesik (author)
-
Lee, Zonghoon (author)
-
Yang, Tae-Hyun (author)
-
Kwon, Kyungjung (author)
-
- Terasaki, Osamu (author)
- Stockholms universitet,Avdelningen för oorganisk kemi och strukturkemi,Korea Advanced Institute of Science and Technology, Republic of Korea
-
Park, Gu-Gon (author)
-
Adzic, Radoslav R. (author)
-
Joo, Sang Hoon (author)
-
show less...
-
(creator_code:org_t)
- 2013-09-23
- 2013
- English.
-
In: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 3, s. 2715-
- Related links:
-
https://doi.org/10.1...
-
show more...
-
https://www.nature.c...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- The high cost of the platinum-based cathode catalysts for the oxygen reduction reaction (ORR) has impeded the widespread application of polymer electrolyte fuel cells. We report on a new family of non-precious metal catalysts based on ordered mesoporous porphyrinic carbons (M-OMPC; M = Fe, Co, or FeCo) with high surface areas and tunable pore structures, which were prepared by nanocasting mesoporous silica templates with metalloporphyrin precursors. The FeCo-OMPC catalyst exhibited an excellent ORR activity in an acidic medium, higher than other non-precious metal catalysts. It showed higher kinetic current at 0.9 V than Pt/C catalysts, as well as superior long-term durability and MeOH-tolerance. Density functional theory calculations in combination with extended X-ray absorption fine structure analysis revealed a weakening of the interaction between oxygen atom and FeCo-OMPC compared to Pt/C. This effect and high surface area of FeCo-OMPC appear responsible for its significantly high ORR activity.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
-
Cheon, Jae Yeong
-
Kim, Taeyoung
-
Choi, YongMan
-
Jeong, Hu Young
-
Kim, Min Gyu
-
Sa, Young Jin
-
show more...
-
Kim, Jaesik
-
Lee, Zonghoon
-
Yang, Tae-Hyun
-
Kwon, Kyungjung
-
Terasaki, Osamu
-
Park, Gu-Gon
-
Adzic, Radoslav ...
-
Joo, Sang Hoon
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Chemical Science ...
- Articles in the publication
-
Scientific Repor ...
- By the university
-
Stockholm University