Acid-base blend membranes based on Nafion®/aminated SPEEK for reducing methanol permeability

Jie Cheng Tsai; Chien Kung Lin

doi:10.1016/j.jtice.2010.07.003

Acid-base blend membranes based on Nafion^®/aminated SPEEK for reducing methanol permeability

Jie Cheng Tsai, Chien Kung Lin

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Sulfonated poly(ether ether ketone)s (SPEEKs) were further substituted on the polymer main chain by amino groups to form an acid-basic polymer, and blended with acid polymeric Nafion^® to create composite membranes. The acid-base blend membranes containing ionic crosslinking exhibited lower water uptake than recast Nafion^®, and the methanol permeability was reduced significantly for various contents of aminated SPEEK, with a maximum proton conductivity of ~0.063Scm^-1 at 30°C. The single-cell performance of the blend membranes with various contents of aminated SPEEK showed 20-26mWcm^-2 for S45A47 at 80°C. Both the power density and open circuit voltage were higher than those of Nafion^® 115 and recast Nafion^®. The acid-base blend membranes satisfy the requirements for proton exchange membranes in the context of direct methanol fuel cell (DMFC) applications.

Original language	English
Pages (from-to)	281-285
Number of pages	5
Journal	Journal of the Taiwan Institute of Chemical Engineers
Volume	42
Issue number	2
DOIs	https://doi.org/10.1016/j.jtice.2010.07.003
Publication status	Published - 2011 Mar

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering

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10.1016/j.jtice.2010.07.003

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title = "Acid-base blend membranes based on Nafion{\textregistered}/aminated SPEEK for reducing methanol permeability",

abstract = "Sulfonated poly(ether ether ketone)s (SPEEKs) were further substituted on the polymer main chain by amino groups to form an acid-basic polymer, and blended with acid polymeric Nafion{\textregistered} to create composite membranes. The acid-base blend membranes containing ionic crosslinking exhibited lower water uptake than recast Nafion{\textregistered}, and the methanol permeability was reduced significantly for various contents of aminated SPEEK, with a maximum proton conductivity of ~0.063Scm-1 at 30°C. The single-cell performance of the blend membranes with various contents of aminated SPEEK showed 20-26mWcm-2 for S45A47 at 80°C. Both the power density and open circuit voltage were higher than those of Nafion{\textregistered} 115 and recast Nafion{\textregistered}. The acid-base blend membranes satisfy the requirements for proton exchange membranes in the context of direct methanol fuel cell (DMFC) applications.",

author = "Tsai, {Jie Cheng} and Lin, {Chien Kung}",

year = "2011",

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AU - Tsai, Jie Cheng

AU - Lin, Chien Kung

PY - 2011/3

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N2 - Sulfonated poly(ether ether ketone)s (SPEEKs) were further substituted on the polymer main chain by amino groups to form an acid-basic polymer, and blended with acid polymeric Nafion® to create composite membranes. The acid-base blend membranes containing ionic crosslinking exhibited lower water uptake than recast Nafion®, and the methanol permeability was reduced significantly for various contents of aminated SPEEK, with a maximum proton conductivity of ~0.063Scm-1 at 30°C. The single-cell performance of the blend membranes with various contents of aminated SPEEK showed 20-26mWcm-2 for S45A47 at 80°C. Both the power density and open circuit voltage were higher than those of Nafion® 115 and recast Nafion®. The acid-base blend membranes satisfy the requirements for proton exchange membranes in the context of direct methanol fuel cell (DMFC) applications.

AB - Sulfonated poly(ether ether ketone)s (SPEEKs) were further substituted on the polymer main chain by amino groups to form an acid-basic polymer, and blended with acid polymeric Nafion® to create composite membranes. The acid-base blend membranes containing ionic crosslinking exhibited lower water uptake than recast Nafion®, and the methanol permeability was reduced significantly for various contents of aminated SPEEK, with a maximum proton conductivity of ~0.063Scm-1 at 30°C. The single-cell performance of the blend membranes with various contents of aminated SPEEK showed 20-26mWcm-2 for S45A47 at 80°C. Both the power density and open circuit voltage were higher than those of Nafion® 115 and recast Nafion®. The acid-base blend membranes satisfy the requirements for proton exchange membranes in the context of direct methanol fuel cell (DMFC) applications.

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Acid-base blend membranes based on Nafion^®/aminated SPEEK for reducing methanol permeability

Abstract

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