A polytetrafluoroethylene porous membrane and dimethylhexadecylamine quaternized poly (vinyl benzyl chloride) composite membrane for intermediate temperature fuel cells
A polytetrafluoroethylene porous membrane and dimethylhexadecylamine quaternized poly (vinyl benzyl chloride) composite membrane for intermediate temperature fuel cells
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DOI：
10.1016/j.jpowsour.2015.06.113
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发表时间：
2015-10-30
影响因子：
9.2
通讯作者：
Liu, Jiyan
中科院分区：
文献类型：
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作者：
Cao, Yuan-Cheng;Xu, Chenxi;Liu, Jiyan
采用多孔聚四氟乙烯（PTFE）薄膜制备了磷酸（PA）负载膜复合材料。合成了N，N-二甲基十六烷基胺部分季铵化聚乙烯基苄基氯（qPVBzCl（-））作为磷酸负载聚合物膜的基底。SEM观察表明孔被qPVBzCI（-）填充。最大PA负载水平计算为平均每个重复单元4.67-5.12。热重分析结果表明，所得复合膜在100 ℃ ~ 200 ℃的中温下是稳定的。复合膜的拉伸应力为56.23MPa，杨氏模量为0.25GPa，断裂伸长率为23%。PA添加后的复合膜（H3PO4@PTFE/qPVBzCl（-））的电导率从105 ℃到180 ℃从0.085 S cm（-1）增加到0.11 S cm（-1）。H2/O2在175 ℃低湿度条件下的峰值功率密度（
A composite material for phosphoric acid (PA) loaded membrane was prepared using a porous polytetrafluoroethylene (PTFE) thin film. N, N-Dimethylhexadecylamine partially quaternized poly (vinyl benzyl chloride) (qPVBzCI(-)) was synthesized as the substrate for the phosphoric acid loaded polymer membrane. SEM observation indicated that the pores were filled with the qPVBzCI(-). The maximum PA loading level was calculated to be 4.67-5.12 per repeat unit on average. TGA results showed that resultant composite membrane was stable in the intermediate temperature from 100 degrees C to 200 degrees C. The composite membrane tensile stress was 56.23 MPa, and the Young's Modulus was 0.25 GPa, and the fractured elongation was 23%. The conductivity of the composite membrane after the PA addition (H3PO4@PTFE/qPVBzCI(-)) increased from 0.085 S cm(-1) to 0.11 S cm(-1) from 105 degrees C to 180 degrees C. The peak power density of the H-2/O-2 at 175 degrees C under low humidity condition (