Designing a Highly Active Metal-Free Oxygen Reduction Catalyst in Membrane Electrode Assemblies for Alkaline Fuel Cells: Effects of Pore Size and Doping-Site Position
- Authors
- Lee, Seonggyu; Choun, Myounghoon; Ye, Youngjin; Lee, Jaeyoung; Mun, Yeongdong; Kang, Eunae; Hwang, Jongkook; Lee, Young-Ho; Shin, Chae-Ho; Moon, Seung-Hyeon; Kim, Soo-Kil; Lee, Eunsung; Lee, Jinwoo
- Issue Date
- Aug-2015
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- electrocatalysis; fuel cells; mesoporous materials; metal-free catalysts; oxygen reduction reaction
- Citation
- ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.54, no.32, pp 9230 - 9234
- Pages
- 5
- Journal Title
- ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
- Volume
- 54
- Number
- 32
- Start Page
- 9230
- End Page
- 9234
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/9239
- DOI
- 10.1002/anie.201501590
- ISSN
- 1433-7851
1521-3773
- Abstract
- To promote the oxygen reduction reaction of metal-free catalysts, the introduction of porous structure is considered as a desirable approach because the structure can enhance mass transport and host many catalytic active sites. However, most of the previous studies reported only half-cell characterization; therefore, studies on membrane electrode assembly (MEA) are still insufficient. Furthermore, the effect of doping-site position in the structure has not been investigated. Here, we report the synthesis of highly active metal-free catalysts in MEAs by controlling pore size and doping-site position. Both influence the accessibility of reactants to doping sites, which affects utilization of doping sites and mass-transport properties. Finally, an N,P-codoped ordered mesoporous carbon with a large pore size and precisely controlled doping-site position showed a remarkable on-set potential and produced 70% of the maximum power density obtained using Pt/C.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of ICT Engineering > School of Integrative Engineering > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/9239)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.