膜科学与技术

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Preparation and properties of amphoteric SPEEK composite
membrane for hydrogen production from electrolytic water

Authors： CHEN Fuhai1,2, WANG Lihua2, HAN Xutong1

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

KeyWords： sulfonated poly(ether ether ketone); amphoteric SPEEK polymer; composite membrane； electrolysis water for producing hydrogen

ClassificationCode：TQ317； TQ116.2+1

year,volume(issue):pagination： 2025,45(3):1-8

Abstract：

In this study, the aminated molecular side link branch was linked to sulfonated polyetheretherketone (SPEEK), and amphoteric SPEEK polymer (SNPEEK) containing sulfonic group and aminated group in the molecular chain was prepared. A series of amphoteric SPEEK composite membranes (AMPEEK) were prepared by adjusting the ratio of SPEEK and SNPEEK. The mechanical properties, proton conductivity, water absorption and swelling rate of AMPEEK membrane were tested. It was found that when the proportion of SNPEEK was 30%, the comprehensive performance of AMPEEK30 membrane was the best. When it was assembled into a membrane electrode for proton exchange membrane water electrolysis (PEMWE), the high current density of 1.15 A/cm2 was achieved at a voltage of 2 V, which was 2.3 times that of SPEEK membrane and 3.3 times that of Nafion115 membrane. The performance of pemwe was greatly improved.

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AuthorIntro：

陈福海（1999-），男，山西大同人，硕士研究生，主要研究方向为质子交换膜

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