Eun-Sil Yoo, K. Nahm, D. Yoo
Dec 30, 2016
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Journal
Journal of Energy Engineering-asce
Abstract
구동하기 위해 대하여 연구하였다 . Bis(4-fluorophenyl)phenyl phosphine oxide 를 발연 황산을 이용하여 을 수 있는 술폰산기를 치환시켜 주었다 . 친수성 올리고머와 소수성 올리고머를 각각 합성하고 , 블록 올리고머를 방향족 치환반응에 의해 제조하였다 . 블록 공중합체의 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 1 H-NMR and gel permeation chromatography(GPC) analysis. Thermal stability was confirmed by thermogravimetric analysis(TGA), block copolymer was stable at high temperature(>200 ℃ ), 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.