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A new catalyst layer based on in situ pore generation of sulfonated poly(ether ether ketone) for PEMFC |
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| Authors: | Wan-Keun Kim Kyung A Sung Keun-Hwan Oh Min-Ju Choo Kuk Young Cho Ki-Yun Cho Jung-Ki Park |
| Affiliation: | 1. Department of Chemical and Biomolecular Engineering and WCU Energy Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea;2. Division of Advanced Materials Engineering, Kongju National University, 275, Budae-dong, Cheonan, Chungnam 303-717, Republic of Korea;3. Fuel Cell Vehicle Team, Hyundai Motor Company and Kia Motors Corp., 104, Mabuk-Dong, Giheung-Gu, Yongin-Si, Gyunggi-Do 446-912, Republic of Korea |
| Abstract: | A new concept of in situ pore generation to reduce water flooding in cathode catalyst layer (CCL) of polymer electrolyte membrane fuel cell (PEMFC) is proposed with the introduction of water soluble poly(ethylene glycol) (PEG) as a porogen to CCL based on sulfonated poly(ether ether ketone) (sPEEK). In this new type of CCL, PEG is directly removed by water produced during the cathode reaction. The new CCL exhibited much higher cell performance especially in mass transport limitation region compared to the pristine sPEEK-CCL. In addition, the presence of PEG in the new CCL lowered the glass transition temperature of the sPEEK binder, and it could improve the transference of catalyst layer onto the polymer electrolyte membrane. |
| Keywords: | Polymer electrolyte membrane fuel cells In situ pore generation method Cathode catalyst layer Water flooding Poly(ethylene glycol) |
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