Tr?ger's Base型聚酰亚胺/磺化聚醚醚酮复合质子交换膜制备及性能 |
作者:骆鑫雨,姜忠义,陈 赞,吴 洪,于海斌,段翠佳,袁 标 |
单位: 1天津大学 化工学院绿色合成与转化教育部重点实验室,天津300072;2天津大学 化学化工协同创新中心,天津300072;3中海油 天津化工研究设计院有限公司,天津300130 |
关键词: 磺化聚醚醚酮;聚酰亚胺;质子交换膜;燃料电池 |
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出版年,卷(期):页码: 2023,43(1):91-98 |
摘要: |
为解决质子交换膜质子传导率与稳定性间相互制约的问题,设计合成了一种强碱性Tröger's Base型聚酰亚胺(PI-TB),通过与磺化聚醚醚酮(SPEEK)共混制备出复合质子交换膜。通过红外光谱分析(FT-IR)、热失重分析(TGA)、拉伸试验等表征了膜的化学结构、热稳定性和机械强度,考察了PI-TB加入量对膜的吸水率、溶胀度、离子交换容量和质子传导率的影响。结果表明,PI-TB与SPEEK之间存在的静电和氢键相互作用提高了膜的机械强度和结构稳定性。当PI-TB共混量为20 %(质量分数)时,复合膜(PS-20)的质子传导率为102 mS/cm(60oC、100% RH);拉伸强度达93.13MPa,为纯SPEEK膜的2.4倍;60oC、60% RH下,PS-20膜的质子传导率为6.78 mS/cm,是纯SPEEK膜的4.6倍。 |
Abstract: In order to solve the problem of mutual restriction between proton conductivity and stability of proton exchange membrane, a strong basic Tröger's Base polyimide (PI-TB) was designed and blended with sulfonated poly(ether ether ketone) (SPEEK) to prepare a composite proton exchange membrane in this paper. Chemical structure, thermal stability and mechanical strength of the membranes were characterized by FT-IR, TGA, mechanical strength testing machine. Besides, the water uptake, swelling ratio, ion exchange capacity and proton conductivity of the membrane were tested. The electrostatic and hydrogen bonding interactions between PI-TB and SPEEK enhance the mechanical strength and structural stability of the membrane. When the blending amount of PI-TB was 20 %, the proton conductivity of the composite membrane (PS-20) was 102 mS/cm (60oC, 100% RH); the tensile strength of PS-20 membrane was 93.13MPa, 2.4 times that of the SPEEK membrane; at 60% RH, the proton conductivity of PS-20 was 6.78mS/cm, 4.6 times as high as that of the SPEEK membrane. |
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作者简介: |
骆鑫雨(1998-),男,河北衡水人,硕士研究生,从事质子交换膜材料方面的研究;E-mail:lxy0220@tju.edu.cn |
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