한국신재생에너지학회:학술대회논문집
- 2009.11a
- /
- Pages.149-149
- /
- 2009
Developement of a PEFC electrodes under the high temperature and low humidified conditions
고온/저 가습 운전을 위한 고분자 전해질 연료전지용 전극 개발
- Ryu, Sung-Kwan ;
-
Choi, Young-Woo
;
-
Park, Jin-Soo
;
-
Yim, Sung-Dae
;
-
Yang, Tae-Hyun
;
-
Kim, Han-Sung
;
-
Kim, Chang-Soo
- 류성관 (한국에너지기술연구원) ;
-
최영우
(한국에너지기술연구원) ;
-
박진수
(상명대학교) ;
-
임성대
(한국에너지기술연구원) ;
-
양태현
(한국에너지기술연구원) ;
-
김한성
(연세대학교) ;
-
김창수
(한국에너지기술연구원)
- Published : 2009.11.25
Abstract
Generally, Nafion ionomer is used in the polymer electrolyte fuel cell (PEFC) electrodes to achieve high power density. At the high temperature operation of PEFC, however, ionic conductivity of Nafion remarkably decreased due to the evaporation of water in Nafion polymer. Recently, many researchers have focused on using the Ionic Liquids(ILs) instead of water in Nafion polymer. ILs have intrinsic properties such as good electrochemical stability, high ionic conductivity, and non-flammability. Especially, ILs play a crucial role in proton conduction by the Grottuss mechanism and act as water in water-free Nafion polymer. However, it was found that the ILs was leached out of the polymer matrix easily. In this study, we prepared membrane electrode assemblies with various contents of ILs. The effect of ILs in the electrode of each designed was investigated by a cyclic voltammetry measurement and the cell performance obtained through a single cell test using H2/Air gases. Electrodes with different contents of ILs in catalyst layer were examined at high temperature and low humidified condition.
Keywords