The effect of the side-chain ratio on main-chain-type and side-chain-type sulfonated poly(ether ether ketone) for direct methanol fuel cell applications

Chien Kung Lin, Jie Cheng Tsai

研究成果: Article

12 引文 (Scopus)

摘要

A series of side-chain ratios of novel main-chain-type and side-chain-type sulfonated poly(ether ether ketone)s (MS-SPEEKs) were synthesised by reaction of the sulfonic acid groups of pristine SPEEKs with 2-aminoethanesulfonic acid to improve the nano-phase separated morphology of the material. 1H NMR and FT-IR spectroscopy was employed to determine the structure and composition of main-chain-type and side-chain-type sulfonated polymers. Flexible and tough membranes with reasonable thermal properties were obtained. The MS-SPEEKs showed good hydrolytic stability, and water uptake values that range from 17% to 25% were observed. Compared to Nafion® 117, the methanol permeability of the MS-SPEEKs was dramatically reduced to between 9.97 × 10 -8 cm 2 s -1 and 1.51 × 10 -7 cm 2 s -1. The proton conductivity increased with increasing temperature and reached 0.031-0.099 S cm -1. A maximum power density and open-circuit voltage of 142 mW cm -2 and 0.79 V, respectively, were obtained at 70 °C, which were significantly greater than the values generated with Nafion® 117. The introduction of pendent side-chain-type sulfonic acid groups with a side-chain ratio of 8% showed the best cell performance; thus, the lower water diffusivity, lower methanol permeability and higher cell performance indicated that MS-SPEEK was a promising candidate for DMFC applications.

原文English
頁(從 - 到)9244-9252
頁數9
期刊Journal of Materials Chemistry
22
發行號18
DOIs
出版狀態Published - 2012 五月 14

指紋

Polyether ether ketones
Sulfonic Acids
Direct methanol fuel cells (DMFC)
Methanol
Proton conductivity
Acids
Water
Open circuit voltage
Infrared spectroscopy
Polymers
Thermodynamic properties
Nuclear magnetic resonance
Membranes
Chemical analysis
Temperature
perfluorosulfonic acid

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

引用此文

@article{2d9ccc7ac5c941e1af0c952711d19b4c,
title = "The effect of the side-chain ratio on main-chain-type and side-chain-type sulfonated poly(ether ether ketone) for direct methanol fuel cell applications",
abstract = "A series of side-chain ratios of novel main-chain-type and side-chain-type sulfonated poly(ether ether ketone)s (MS-SPEEKs) were synthesised by reaction of the sulfonic acid groups of pristine SPEEKs with 2-aminoethanesulfonic acid to improve the nano-phase separated morphology of the material. 1H NMR and FT-IR spectroscopy was employed to determine the structure and composition of main-chain-type and side-chain-type sulfonated polymers. Flexible and tough membranes with reasonable thermal properties were obtained. The MS-SPEEKs showed good hydrolytic stability, and water uptake values that range from 17{\%} to 25{\%} were observed. Compared to Nafion{\circledR} 117, the methanol permeability of the MS-SPEEKs was dramatically reduced to between 9.97 × 10 -8 cm 2 s -1 and 1.51 × 10 -7 cm 2 s -1. The proton conductivity increased with increasing temperature and reached 0.031-0.099 S cm -1. A maximum power density and open-circuit voltage of 142 mW cm -2 and 0.79 V, respectively, were obtained at 70 °C, which were significantly greater than the values generated with Nafion{\circledR} 117. The introduction of pendent side-chain-type sulfonic acid groups with a side-chain ratio of 8{\%} showed the best cell performance; thus, the lower water diffusivity, lower methanol permeability and higher cell performance indicated that MS-SPEEK was a promising candidate for DMFC applications.",
author = "Lin, {Chien Kung} and Tsai, {Jie Cheng}",
year = "2012",
month = "5",
day = "14",
doi = "10.1039/c2jm16326h",
language = "English",
volume = "22",
pages = "9244--9252",
journal = "Journal of Materials Chemistry",
issn = "0959-9428",
publisher = "Royal Society of Chemistry",
number = "18",

}

TY - JOUR

T1 - The effect of the side-chain ratio on main-chain-type and side-chain-type sulfonated poly(ether ether ketone) for direct methanol fuel cell applications

AU - Lin, Chien Kung

AU - Tsai, Jie Cheng

PY - 2012/5/14

Y1 - 2012/5/14

N2 - A series of side-chain ratios of novel main-chain-type and side-chain-type sulfonated poly(ether ether ketone)s (MS-SPEEKs) were synthesised by reaction of the sulfonic acid groups of pristine SPEEKs with 2-aminoethanesulfonic acid to improve the nano-phase separated morphology of the material. 1H NMR and FT-IR spectroscopy was employed to determine the structure and composition of main-chain-type and side-chain-type sulfonated polymers. Flexible and tough membranes with reasonable thermal properties were obtained. The MS-SPEEKs showed good hydrolytic stability, and water uptake values that range from 17% to 25% were observed. Compared to Nafion® 117, the methanol permeability of the MS-SPEEKs was dramatically reduced to between 9.97 × 10 -8 cm 2 s -1 and 1.51 × 10 -7 cm 2 s -1. The proton conductivity increased with increasing temperature and reached 0.031-0.099 S cm -1. A maximum power density and open-circuit voltage of 142 mW cm -2 and 0.79 V, respectively, were obtained at 70 °C, which were significantly greater than the values generated with Nafion® 117. The introduction of pendent side-chain-type sulfonic acid groups with a side-chain ratio of 8% showed the best cell performance; thus, the lower water diffusivity, lower methanol permeability and higher cell performance indicated that MS-SPEEK was a promising candidate for DMFC applications.

AB - A series of side-chain ratios of novel main-chain-type and side-chain-type sulfonated poly(ether ether ketone)s (MS-SPEEKs) were synthesised by reaction of the sulfonic acid groups of pristine SPEEKs with 2-aminoethanesulfonic acid to improve the nano-phase separated morphology of the material. 1H NMR and FT-IR spectroscopy was employed to determine the structure and composition of main-chain-type and side-chain-type sulfonated polymers. Flexible and tough membranes with reasonable thermal properties were obtained. The MS-SPEEKs showed good hydrolytic stability, and water uptake values that range from 17% to 25% were observed. Compared to Nafion® 117, the methanol permeability of the MS-SPEEKs was dramatically reduced to between 9.97 × 10 -8 cm 2 s -1 and 1.51 × 10 -7 cm 2 s -1. The proton conductivity increased with increasing temperature and reached 0.031-0.099 S cm -1. A maximum power density and open-circuit voltage of 142 mW cm -2 and 0.79 V, respectively, were obtained at 70 °C, which were significantly greater than the values generated with Nafion® 117. The introduction of pendent side-chain-type sulfonic acid groups with a side-chain ratio of 8% showed the best cell performance; thus, the lower water diffusivity, lower methanol permeability and higher cell performance indicated that MS-SPEEK was a promising candidate for DMFC applications.

UR - http://www.scopus.com/inward/record.url?scp=84859823342&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84859823342&partnerID=8YFLogxK

U2 - 10.1039/c2jm16326h

DO - 10.1039/c2jm16326h

M3 - Article

AN - SCOPUS:84859823342

VL - 22

SP - 9244

EP - 9252

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

SN - 0959-9428

IS - 18

ER -