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http://dx.doi.org/10.5855/ENERGY.2016.25.4.176

Synthesis and characterization of polymer electrolyte membrane for fuel cell including sulfonated bis (4-fluorophenyl) phenylphosphine oxide  

Yoo, Eun Sil (Graduate school, Department of Energy Storage.Conversion Engineering, Hydrogen & Fuel Cell Research Center, Chonbuk National University)
Nahm, Kee Suk (Graduate school, Department of Energy Storage.Conversion Engineering, Hydrogen & Fuel Cell Research Center, Chonbuk National University)
Yoo, Dong Jin (Graduate school, Department of Energy Storage.Conversion Engineering, Hydrogen & Fuel Cell Research Center, Chonbuk National University)
Publication Information
Abstract
This study relates to a polymer electrolyte membrane for improved performance fuel cell, were researched with respect to properties required for driving a fuel cell. The bis(4-fluorophenyl)phenyl phosphine oxide was sulfonated using fuming sulfuric acid. Synthetic hydrophilic oligomer and the hydrophobic oligomer and the block copolymers were prepared via aromatic nucleophilic substitution polycondensation. A block copolymer structure and degree of sulfonation was analyzed by $^1H$-NMR and gel permeation chromatography(GPC) analysis. Thermal stability was confirmed by thermogravimetric analysis(TGA), block copolymer was stable at high temperature(>$200^{\circ}C$), The ion conductivity was measured in order to demonstrate the performance of fuel cell. Synthesis membrane was the increase of temperature was improved conductivity up to 58 mS/cm due to the influence of the developed ion clusters. The phase separation of the polymer was observed to make AFM analysis.
Keywords
Fuel cell; polymer electrolyte membrane; bis(4-fluorophenyl)phenyl phosphine oxide; block copolymer;
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