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Preparation of SPEEK/PEI@ILs composite proton exchange membranes and properties of PEMWE

Authors： CHEN Gefeng,WANG Lihua,HAN Xutong

Units： 1. Key Laboratory of Polymer in Extreme Environment, Institute of Chemistry, Chinese Academy of Science,Beijing 100190, China;2.School of Material Science and Engineering, Tiangong University，Tianjin 300387，China;

KeyWords： sulfonated poly(ether ether ketone); proton exchange membrane; water electrolysis to produce hydrogen; membrane electrode assembly; proton conductivity

ClassificationCode：TQ028；TB383

year,volume(issue):pagination： 2023,43(6):29-34

Abstract：

SPEEK/PEI@ILs acid-base composite membrane was prepared by adding polyetherimide (PEI) and ionic liquid (ILs) to 75% sulfonated poly(ether ether ketone) (SPEEK), which was used in proton exchange membrane water electrolysis to produce hydrogen (PEMWE). The SPEEK/PEI@ILs composite membranes were characterized by FT-IR and SEM, and their water absorption, swelling rate, proton conductivity, thermal stability and mechanical properties were measured. The results show that the SPEEK/PEI@ILs composite membrane has similar proton conductivity and swelling degree compared with the commercial Nafion117 membrane, indicating that the addition of PEI enhances the dimensional stability of the composite membrane. The performance of PEMWE was tested for the SPEEK/PEI@ILs composite membrane and Nafion membranes. The results indicated that the SPEEK/PEI@ILs membrane based MEA could run stably for 10h at 0.5A/cm2@1.96V (±0.03), which would replace Nafion117 membrane in proton exchange membrane electrolysis water hydrogen production and had a better application prospect.

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AuthorIntro：

陈葛锋（1997-），男，安徽省安庆市人，硕士，主要研究方向为质子交换膜和膜电极。E-mail：2296729534@qq.com

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