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Effect of KH570 modified barium titanate on the properties of SPEEK proton exchange membrane

Authors： DONG Cuicui, WANG Yijie, SUN Jin, ZHOU Qiong

Units： 1Sinopec Dalian Research Institute of Petroleum and Petrochemicals, 2China University of Petroleum-Beijing

KeyWords： proton conductivity, SPEEK, silane coupling agent, barium titanate

ClassificationCode：TM911.48

year,volume(issue):pagination： 2020,40(4):55-61

Abstract：

Barium titanate (BT) was modified by KH570 to improve its dispersion in polymers. The sulfonated poly(ether ether ketone) (SPEEK)/KH570 modified barium titanate (KH570-BT) composite proton exchange membrane was prepared by solution casting method. The dispersion of BT and KH570-BT in SPEEK was observed by TEM. The influences of KH570-BT on the properties of composite membrane was studied systematically. The results show that the incorporation of KH570-BT can improve the proton conductivity, methanol permeability, thermal stability and selectivity of SPEEK. The proton conductivity of the SPEEK/KH570-BT-1.0 composite membrane reached 63.7 ms/cm, higher than SPEEK/BT-1.0 (σ = 57.7 ms/cm) and SPEEK (σ = 58.6 ms/cm) , the selectivity of SPEEK/KH570-BT-1.0 was 20.9×104 S s/cm3, which was 21.5% and 18.1% higher than SPEEK/BT-1.0 and SPEEK respectively.

Funds：

国家重点研发计划（2016YFC0303700）；国家科技重大专项（201505017-002）

AuthorIntro：

第一作者简介：董翠翠（1985-），女，辽宁省人，博士，主要从事质子交换膜燃料电池的研究，E-mail：dongcuicui.fshy@sinopec.com 通讯作者，E-mail：zhouqiong_cn@163.com

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