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个人信息Personal Information
教授
博士生导师
硕士生导师
性别:女
毕业院校:大连理工大学
学位:博士
所在单位:化工学院
学科:膜科学与技术. 化学工程
办公地点:大连理工大学西部校区 化工实验楼D407
大连理工大学盘锦校区 D01 221
联系方式:📱/微信:13940978991
电子邮箱:xuemeiw@dlut.edu.cn
SPEEK proton exchange membranes modified with silica sulfuric acid nanoparticles
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论文类型:期刊论文
发表时间:2012-08-01
发表刊物:INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
收录刊物:SCIE、EI
卷号:37
期号:16
页面范围:11853-11861
ISSN号:0360-3199
关键字:Proton exchange membrane; Silica sulfuric acid; SPEEK; Composite membrane
摘要:In order to increase both of the water uptake and conductivity, the proton exchange membranes were fabricated by sulfonated poly(ether ether ketone) (SPEEK) doped with varied contents of silica sulfuric acid (SSA) which is obtained by treating SiO2 nanoparticles with more volatile SO2Cl2. SEM images of the composite membranes show that SSA nanoparticles are dispersed within the membranes uniformly, indicating the good organic compatibility of SSA particles. TEM images show that the composite membranes have improved ionic clusters distribution. The water uptakes of the composite membranes in water and under low relative humidities are all higher than that of the pristine SPEEK membrane. The addition of SSA enhances the conductivity obviously. The composite membrane containing 5wt.% SSA exhibits the highest conductivity of 0.13 Scm(-1) at 80 degrees C, approximately 18.6% higher than that of the pristine SPEEK membrane and 8.6% higher than that of Nafion117. The composite membranes also show good thermal stability. These results imply the potential application of the SPEEK/SSA composite membranes as improved PEMs in PEMFC. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.