膜科学与技术

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Preparation and properties of Tr?ger's base polyimide/sulfonated poly(ether ether ketone) composite proton exchange membrane

Authors： Luo Xinyu ，Wu Hong，Duan Cuijia，Yuan Biao， Jiang Zhongyi，Chen Zan

Units： 1 Tianjin university，Tianjin 300072，China；2 CenerTech Tianjin Chemical Research and Design Institute Co.，Ltd.，Tianjin 300130，China

KeyWords： sulfonated poly(ether ether ketone); polyimide; proton exchange membrane; fuel cell

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year,volume(issue):pagination： 2023,43(1):91-98

Abstract：

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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AuthorIntro：

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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