Preparation of nitrated sulfonated poly(ether ether ketone) membranes for reducing methanol permeability in direct methanol fuel cell applications

Chien Kung Lin; Jen Feng Kuo; Chuh Yung Chen

doi:10.1016/j.jpowsour.2008.11.008

Preparation of nitrated sulfonated poly(ether ether ketone) membranes for reducing methanol permeability in direct methanol fuel cell applications

Department of Chemical Engineering

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

25 Citations (Scopus)

Abstract

Sulfonated poly(ether ether ketone)s (SPEEKs) were further substituted on the polymer main chain by nitration. All sulfonation and nitration were achieved with an inexpensive and simple post substitute reaction. The nitrated SPEEKs have a high glass transition temperature and thermal decomposition temperature, and a lower water uptake than SPEEK, which provides sufficient mechanical strength without swelling in the direct methanol fuel cell (DMFC) application. The methanol permeability of nitrated SPEEKS is reduced to 1.76 × 10^-7 cm² s^-1 for S53N22 and 1.86 × 10^-7 cm² s^-1 for S63N17 with no loss of conductivity in the DMFC application, and a proton conductivity that reached 0.026 S cm^-1. The nitrated SPEEK membranes satisfy the requirements of proton-exchange membranes for the DMFC.

Original language	English
Pages (from-to)	341-347
Number of pages	7
Journal	Journal of Power Sources
Volume	187
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2008.11.008
Publication status	Published - 2009 Feb 15

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

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10.1016/j.jpowsour.2008.11.008

Cite this

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title = "Preparation of nitrated sulfonated poly(ether ether ketone) membranes for reducing methanol permeability in direct methanol fuel cell applications",

abstract = "Sulfonated poly(ether ether ketone)s (SPEEKs) were further substituted on the polymer main chain by nitration. All sulfonation and nitration were achieved with an inexpensive and simple post substitute reaction. The nitrated SPEEKs have a high glass transition temperature and thermal decomposition temperature, and a lower water uptake than SPEEK, which provides sufficient mechanical strength without swelling in the direct methanol fuel cell (DMFC) application. The methanol permeability of nitrated SPEEKS is reduced to 1.76 × 10-7 cm2 s-1 for S53N22 and 1.86 × 10-7 cm2 s-1 for S63N17 with no loss of conductivity in the DMFC application, and a proton conductivity that reached 0.026 S cm-1. The nitrated SPEEK membranes satisfy the requirements of proton-exchange membranes for the DMFC.",

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AU - Kuo, Jen Feng

AU - Chen, Chuh Yung

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Y1 - 2009/2/15

N2 - Sulfonated poly(ether ether ketone)s (SPEEKs) were further substituted on the polymer main chain by nitration. All sulfonation and nitration were achieved with an inexpensive and simple post substitute reaction. The nitrated SPEEKs have a high glass transition temperature and thermal decomposition temperature, and a lower water uptake than SPEEK, which provides sufficient mechanical strength without swelling in the direct methanol fuel cell (DMFC) application. The methanol permeability of nitrated SPEEKS is reduced to 1.76 × 10-7 cm2 s-1 for S53N22 and 1.86 × 10-7 cm2 s-1 for S63N17 with no loss of conductivity in the DMFC application, and a proton conductivity that reached 0.026 S cm-1. The nitrated SPEEK membranes satisfy the requirements of proton-exchange membranes for the DMFC.

AB - Sulfonated poly(ether ether ketone)s (SPEEKs) were further substituted on the polymer main chain by nitration. All sulfonation and nitration were achieved with an inexpensive and simple post substitute reaction. The nitrated SPEEKs have a high glass transition temperature and thermal decomposition temperature, and a lower water uptake than SPEEK, which provides sufficient mechanical strength without swelling in the direct methanol fuel cell (DMFC) application. The methanol permeability of nitrated SPEEKS is reduced to 1.76 × 10-7 cm2 s-1 for S53N22 and 1.86 × 10-7 cm2 s-1 for S63N17 with no loss of conductivity in the DMFC application, and a proton conductivity that reached 0.026 S cm-1. The nitrated SPEEK membranes satisfy the requirements of proton-exchange membranes for the DMFC.

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JO - Journal of Power Sources

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IS - 2

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Preparation of nitrated sulfonated poly(ether ether ketone) membranes for reducing methanol permeability in direct methanol fuel cell applications

Abstract

UN SDGs

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