Proton-exchange Sulfonated Poly(ether ether ketone)/Sulfonated Phenolphthalein Poly(ether sulfone) Blend Membranes in DMFCs

高启君; 王宇新; 许莉; 王志涛; 卫国强

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Proton-exchange Sulfonated Poly(ether ether ketone)/Sulfonated Phenolphthalein Poly(ether sulfone) Blend Membranes in DMFCs

Updated：2026-01-06

- Proton-exchange Sulfonated Poly(ether ether ketone)/Sulfonated Phenolphthalein Poly(ether sulfone) Blend Membranes in DMFCs
- Proton-exchange Sulfonated Poly(ether ether ketone)/Sulfonated Phenolphthalein Poly(ether sulfone) Blend Membranes in DMFCs
- 中国化学工程学报（英文版） 2009年17卷第6期页码：934-941
- Affiliations：
  
  1. School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300072
  2. State Key Laboratory of Chemical Engineering,Tianjin,China,300072
- Author bio：
- Funds：
  
  Supported by the State Key Development Program for Basic Research of China (2008CB617502);the National Natural Science Foundation of China (20606025);Program for Changjiang Scholars and Innovative Research Team in University of China (IRT0641)
- DOI：
  中图分类号：
- 纸质出版：2009
- Accepted：
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高启君, 王宇新, 许莉, 等. Proton-exchange Sulfonated Poly(ether ether ketone)/Sulfonated Phenolphthalein Poly(ether sulfone) Blend Membranes in DMFCs[J]. 中国化学工程学报（英文版）, 2009,17(6):934-941.

GAO Qijun, WANG Yuxin, XU Li, WANG Zhitao, WEI Guoqiang. Proton-exchange Sulfonated Poly(ether ether ketone)/Sulfonated Phenolphthalein Poly(ether sulfone) Blend Membranes in DMFCs[J]. , 2009, 17(6): 934-941.
高启君, 王宇新, 许莉, 等. Proton-exchange Sulfonated Poly(ether ether ketone)/Sulfonated Phenolphthalein Poly(ether sulfone) Blend Membranes in DMFCs[J]. 中国化学工程学报（英文版）, 2009,17(6):934-941. DOI：

GAO Qijun, WANG Yuxin, XU Li, WANG Zhitao, WEI Guoqiang. Proton-exchange Sulfonated Poly(ether ether ketone)/Sulfonated Phenolphthalein Poly(ether sulfone) Blend Membranes in DMFCs[J]. , 2009, 17(6): 934-941. DOI：

摘要

Abstract

A sulfonated poly(ether ether ketone)(SPEEK) membrane with fairly high degree of sulfonation(DS) swells excessively and even dissolves at high temperature.To solve these problems

sulfonated phenolphthalein poly(ether sulfone)(SPES-C

DS=53.7%) is blended with the SPEEK matrix(DS=55.1%

61.7%) to prepare SPEEK/SPES-C blend membrane.The decrease in swelling degree and methanol permeability of the membrane is dose-dependent.Pure SPEEK(DS=61.7%) membrane dissolves completely in water at 70℃

whereas the swelling degree of the SPEEK(DS=61.7%)/SPES-C(40%

by mass) membrane is 29.7% at 80℃.From room temperature to 80oC

the methanol permeability of all SPEEK(DS=55.1%)/SPES-C blend membranes is about one order of magnitude lower than that of Nafion115.At higher temperature

the addition of SPES-C polymer increases the dimensional stability and greater proton conductivity can be achieved.The SPEEK(DS=55.1%)/SPES-C(40%

by mass) membrane can withstand temperatures up to 150℃.The proton conductivity of SPEEK(DS=55.1%)/SPES-C(30%

by mass) membrane approaches 0.16 S·cm

-1

matching that of Nafion 115 at 140℃ and 100% RH

while pure SPEEK(DS=55.1%) membrane dissolves at 90℃.The SPEEK/SPES-C blend membranes are promising for use in direct methanol fuel cells because of their good dimensional stability

high proton conductivity

and low methanol permeability.

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