標題: Poly(ethylene glycol) modified activated carbon for high performance proton exchange membrane fuel cells
作者: Tsai, Li-Duan
Chien, Hung-Chung
Wang, Cheng-Hong
Lai, Chien-Ming
Lin, Jiunn-Nan
Zhu, Chao-Yuan
Chang, Feng-Chih
應用化學系
Department of Applied Chemistry
關鍵字: Nafion;Activated carbon;Water uptake;Proton exchange membrane fuel cell
公開日期: 30-Aug-2013
摘要: A high water retention membrane is developed by co-assembling poly(ethylene glycol) (PEG) grafted activated carbon (AC-PEG) with Nafion. The AC-PEG is prepared via a sol gel process. The use of PEG as a transporting medium in AC-PEG shows a largely improved water retention ability, a higher proton conductivity and a reduced swelling ratio, making it well suited for proton exchange membrane fuel cells (PEMFCs). Further, the composite membranes show improved mechanical properties at high temperature, thus ensuring the structural stability of membranes during the fuel cell operation. Compositional optimized AC-PEG/Nafion composite membrane (15 wt% compared to Nafion) demonstrates a better performance than the commercially available counterpart, Nafion 212, in fuel cell measurements. To identify the key factor of the improved performance, current interrupt technique is used to quantitatively verify the changes of resistance under different relative humidity environment. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.ijhydene.2013.06.054
http://hdl.handle.net/11536/22794
ISSN: 0360-3199
DOI: 10.1016/j.ijhydene.2013.06.054
期刊: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume: 38
Issue: 26
起始頁: 11331
結束頁: 11339
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