The synthesis and characteristic of an anion conductive polymer membrane for alkaline anion exchange fuel cells
The synthesis and characteristic of an anion conductive polymer membrane for alkaline anion exchange fuel cells
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DOI：
10.1016/j.jpowsour.2011.10.113
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发表时间：
2012-03
影响因子：
9.2
通讯作者：
Yuan-Cheng Cao;Xu Wang;K. Scott
中科院分区：
文献类型：
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作者：
Yuan-Cheng Cao;Xu Wang;K. Scott
以甲基乙烯基醚-马来酸酐共聚物（PMVMA）为原料，通过马来酸酐开环反应接枝季铵基团，制得碱性阴离子交换膜。FT-IR光谱表明，季铵基团成功地接枝在这种廉价的原料。TGA显示降解温度为150°C，这是由于季铵基团的损失。离子交换后所得膜的拉伸应力为9.0MPa，杨氏模量为0.14GPa，断裂伸长率为11%。在25-65°C的温度范围内，通过平面，阴离子电导率从1.9×10− 2变化到2.7×10−2Scm− 2。在15°C ~ 35°C范围内，电池的功率密度随工作温度的升高而增大。在膜电极组件（MEA）中离子交联聚合物负载量为15%的情况下，燃料电池中的功率密度对于O2（35°C）和空气（30°C）分别为115 mWcm − 2和40 mWcm − 2。
An alkaline anion exchange membrane has been developed from poly (methyl vinyl ether-alt-maleic anhydride) (PMVMA) by grafting quaternary ammonium groups through a maleic anhydride ring-open reaction. FT-IR spectra showed successful grafting of quaternary ammonium groups on this cheap raw material. TGA showed that the degradation temperature was 150°C which was due to the loss of the quaternary ammonium groups. The tensile stress of the resultant membrane after ion exchange was 9.0MPa, and the Young's modulus was 0.14GPa with a fractured elongation 11%. The through plane, anion conductivity varied from 1.9×10−2to 2.7×10−2Scm−2in the temperature range of 25–65°C. The power density of a fuel cell with the membrane increased with the operation temperature in the range from 15°C to 35°C. With an ionomer loading of 15% in membrane electrode assemblies (MEA), the power density in the fuel cell was 115mWcm−2and 40mWcm−2for O2(35°C) and air (30°C), respectively.