Hydrocarbon-based electrode ionomer for proton exchange membrane fuel cells |
| |
| Affiliation: | 1. Center for Hydrogen and Fuel Cell Research, Korea Institute of Science and Technology (KIST), Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea;2. Department of Chemical and Biological Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul, 02841, Republic of Korea;1. Center for Hydrogen?Fuel Cell Research, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea;2. Graduate School of Energy and Environment (KU-KIST Green School), Korea University, Seoul 02841, Republic of Korea;3. Division of Energy & Environment Technology, KIST School, University of Science and Technology (UST), Seoul 02792, Republic of Korea;4. Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea;1. School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China;2. Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China;3. University of Chinese Academy of Sciences, Beijing, 100039, China;1. Graduate school of EEWS(Energy Environment Water Sustainability)(WCU), Korea Advanced Institute of Science and Technology (KAIST), 373-1, Guseong-dong, Yuseong-gu, Daejeon, 305-701, Republic of Korea;2. Department of Chemical & Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 373-1, Guseong-dong, Yuseong-gu, Daejeon, 305-701, Republic of Korea;3. Department of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 261 Cheomdan-gwagiro (Oryong-dong), Gwangju 500-712, Republic of Korea;1. Energy Materials Research Center, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, South Korea;2. Interface Materials and Chemical Engineering Research Center, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, South Korea;3. School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, South Korea;4. Hydrogen Mobility R&D Center, Korea Automotive Technology Institute, 303 Pungse-ro, Pungse-Myeon, Cheonan 31214, South Korea |
| |
| Abstract: | The electrode ionomer is a key factor that significantly affects the catalyst layer morphology and fuel cell performance. Herein, sulfonated poly(arylene ether sulfone)-based electrode ionomers with polymers of various molecular weights and alcohol/water mixtures were prepared, and those comprising the alcohol/water mixture showed a higher performance than the ones prepared using higher boiling solvents, such as dimethylacetamide; this is owing to the formation of the uniformly dispersed ionomer catalyst layer. The relation between ionomer molecular weight for the same polymer structure and the sulfonation degree was investigated. Because the chain length of polymer varies with molecular weight and chain entanglement degree, its molecular weight affects the electrode morphology. As the ionomer covered the catalyst, the agglomerates formed were of different morphologies according to their molecular weight, which could be deduced indirectly through dynamic light scattering and scanning electron microscopy. Additionally, the fuel cell performance was confirmed in the current-voltage curve. |
| |
| Keywords: | Hydrocarbon-based electrode ionomer Membrane-electrode assembly Polymer electrolyte Proton exchange membrane fuel cell Sulfonated poly(arylene ether sulfone) |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
