Synthesis and properties of sulfonated polyimides derived from bis(sulfophenoxy) benzidines
Synthesis and properties of sulfonated polyimides derived from bis(sulfophenoxy) benzidines
复制标题
DOI：
10.1002/pola.23123
复制
发表时间：
2009-03
期刊：
影响因子：
--
通讯作者：
Yoshiki Sutou;Yan Yin;Zhaoxia Hu;Shouwen Chen;H. Kita;K. Okamoto;Hongyuan Wang;H. Kawasato
中科院分区：
文献类型：
--
作者：
Yoshiki Sutou;Yan Yin;Zhaoxia Hu;Shouwen Chen;H. Kita;K. Okamoto;Hongyuan Wang;H. Kawasato
本文成功合成了一系列具有磺苯氧基侧基的芳香磺化聚酰亚胺（spi），并对其作为燃料电池聚合物电解质膜的应用进行了评价。SPIs具有高粘度，具有韧性和柔韧性。SPI膜在水中表现出各向异性的膜膨胀，在厚度方向上的尺寸变化比在平面上大得多。即使在较低的相对湿度（RH）范围内，它们也表现出比其他SPI膜更好的质子导电性能，例如，在50% RH和120°C下，它们的质子导电率高达0.05 S/cm。在130°C水中老化500 h后，仍保持较高的机械强度和导电性，与目前报道的主链型SPI膜和侧链型SPI膜相比，具有更好的水稳定性。在90°C和84 - 30%相对湿度下，聚合物电解质燃料电池（PEFC）表现出相当高的电池性能，具有很高的应用潜力。©2009 Wiley期刊公司[J] .化学工程学报，2009,31 (4):557 - 557
A series of aromatic sulfonated polyimides (SPIs) bearing sulfophenoxy side groups have been successfully synthesized and evaluated as polymer electrolyte membranes for fuel cell applications. The SPIs had high viscosity and gave tough and flexible membranes. The SPI membranes showed anisotropic membrane swelling in water with much larger dimensional change in thickness direction than in plane one. They showed the better proton-conducting performance even in the lower relative humidity (RH) range than the other SPI membranes, for example, a high proton conductivity of 0.05 S/cm at 50 % RH and 120 °C. They maintained high mechanical strength and conductivity after aging in water at 130 °C for 500 h, showing much better water stability compared with the main-chain-type SPI and side-chain-type SPI membranes reported so far. In polymer electrolyte fuel cells (PEFCs) operated at 90 °C and 84–30%RH, they showed fairly high cell performances and have high potential for PEFC applications. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 1463–1477, 2009