Journal
POLYMER
Volume 170, Issue -, Pages 31-42Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2019.02.051
Keywords
Fuel cell; Anion exchange membrane; Alkaline stability; Conductivity; Methanol permeability
Categories
Funding
- State's Key Project of Research and Development Plan [2016YFB1100900]
- Regional Key Program of Science and Technology Service Network Initiative from Chinese Academy of Sciences
- Fund of National Engineering Research Center for Optoelectronic Crystalline Materials
- STS Project of Fujian-CAS [2017T3005, 2018T3011, 2018T3026]
- Key Research Program of the Chinese Academy of Sciences [ZDRW-CN-2016-1]
- China Postdoctoral Science Foundation [2018M632590]
- UCAS Scholarship for International Students
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Geminal-imidazolium-type ionic liquid ([DimL] [OH] ILs) was synthesized. Then, a series of membranes (PVAFP/[DimL] [OH]) was prepared with pyridine functionalized poly(vinyl alcohol) (PVA-FP) as the polymer matrix. Characteristic results reveal that crystallinity of the aforementioned membrane was effectively reduced, the initial thermal degradation temperature was elevated 87 degrees C than that of unmodified PVA-GA membrane. And the maximum OH- conductivity is 5.8 x 10(-2)S. cm(-1) at 70 degrees C, only 4.6% decline of OH- conductivity can be observed after immersing it in 1 M KOH solution for 240 h, and only 13.1% decline under 6 M KOH solution was used. Besides, methanol permeability (1.1-5.1) x 10(-6 )cm(2).s(-1) was lower than that of Nafion (R) 117 (4.5-9.2) x 10(-6) cm(2).s(-1) at 30 degrees C. Finally, a peak power density of 48 mW cm(-2) at 70 degrees C can be obtained under a single cell test.
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