Fluorinated naphthalene-based poly(arylene ether ketone)s containing pendant groups for direct methanol fuel cells

Tianyi Na; Ke Shao; Jing Zhu; Zhongguo Liu; Hongcheng Sun; Christopher M. Lew; Zhuoqi Zhang; Gang Zhang

doi:10.1016/j.polymer.2012.08.008

Fluorinated naphthalene-based poly(arylene ether ketone)s containing pendant groups for direct methanol fuel cells

Tianyi Na, Ke Shao, Jing Zhu, Zhongguo Liu, Hongcheng Sun, Christopher M. Lew, Zhuoqi Zhang, Gang Zhang

Materials Science and Engineering

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

11 Scopus citations

Abstract

A novel series of naphthalene-based poly(arylene ether ketone) copolymers containing methoxy groups and hexafluoroisopropylidene diphenyl moieties (6F-MNPAEKs) were successfully synthesized by aromatic nucleophilic polycondensation. Chain-type fluorinated and sulfonated naphthalene-based poly(arylene ether ketone) copolymers (6F-SNPAEKs) were subsequently synthesized by demethylation and sulfobutylation. The chemical structures of 6F-SNPAEKs were confirmed by ¹H NMR. The 6F-SNPAEKs in acid form showed excellent thermal stability at elevated temperatures. The 6F-SNPAEK membranes were easily obtained by solution casting and properties for fuel cells were investigated in detail. The water uptake, swelling ratio and proton conductivity increased with degree of sulfonation (DS) and temperature. 6F-SNPAEK-90 showed the highest conductivity of 0.181 S cm^-1 at 80 °C. The methanol permeability of the membranes was in the range of 0.238-6.49 × 10 ^-7 cm² s^-1, compared to 1.55 × 10 ^-6 cm² s^-1 for Nafion 117. The membranes also showed excellent mechanical properties: the elongation at break was greater than 15%. These results indicate that the 6F-SNPAEK membranes are a promising candidate for use in direct methanol fuel cell (DMFC) applications.

Original language	English (US)
Pages (from-to)	4413-4419
Number of pages	7
Journal	Polymer
Volume	53
Issue number	20
DOIs	https://doi.org/10.1016/j.polymer.2012.08.008
State	Published - Sep 12 2012

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/j.polymer.2012.08.008

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title = "Fluorinated naphthalene-based poly(arylene ether ketone)s containing pendant groups for direct methanol fuel cells",

abstract = "A novel series of naphthalene-based poly(arylene ether ketone) copolymers containing methoxy groups and hexafluoroisopropylidene diphenyl moieties (6F-MNPAEKs) were successfully synthesized by aromatic nucleophilic polycondensation. Chain-type fluorinated and sulfonated naphthalene-based poly(arylene ether ketone) copolymers (6F-SNPAEKs) were subsequently synthesized by demethylation and sulfobutylation. The chemical structures of 6F-SNPAEKs were confirmed by 1H NMR. The 6F-SNPAEKs in acid form showed excellent thermal stability at elevated temperatures. The 6F-SNPAEK membranes were easily obtained by solution casting and properties for fuel cells were investigated in detail. The water uptake, swelling ratio and proton conductivity increased with degree of sulfonation (DS) and temperature. 6F-SNPAEK-90 showed the highest conductivity of 0.181 S cm-1 at 80 °C. The methanol permeability of the membranes was in the range of 0.238-6.49 × 10 -7 cm2 s-1, compared to 1.55 × 10 -6 cm2 s-1 for Nafion 117. The membranes also showed excellent mechanical properties: the elongation at break was greater than 15%. These results indicate that the 6F-SNPAEK membranes are a promising candidate for use in direct methanol fuel cell (DMFC) applications.",

author = "Tianyi Na and Ke Shao and Jing Zhu and Zhongguo Liu and Hongcheng Sun and Lew, {Christopher M.} and Zhuoqi Zhang and Gang Zhang",

note = "Funding Information: This work was supported by the National Nature Science Foundation of China (Grant No. 21074044 & 51101073 ) and Special Fund for Basic Scientific Research of Central Colleges, Jilin University (No. 201103088 ) and Doctoral Program of Higher Education of China (No. 20110061120019 )",

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month = sep,

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doi = "10.1016/j.polymer.2012.08.008",

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T1 - Fluorinated naphthalene-based poly(arylene ether ketone)s containing pendant groups for direct methanol fuel cells

AU - Na, Tianyi

AU - Shao, Ke

AU - Zhu, Jing

AU - Liu, Zhongguo

AU - Sun, Hongcheng

AU - Lew, Christopher M.

AU - Zhang, Zhuoqi

AU - Zhang, Gang

N1 - Funding Information: This work was supported by the National Nature Science Foundation of China (Grant No. 21074044 & 51101073 ) and Special Fund for Basic Scientific Research of Central Colleges, Jilin University (No. 201103088 ) and Doctoral Program of Higher Education of China (No. 20110061120019 )

PY - 2012/9/12

Y1 - 2012/9/12

N2 - A novel series of naphthalene-based poly(arylene ether ketone) copolymers containing methoxy groups and hexafluoroisopropylidene diphenyl moieties (6F-MNPAEKs) were successfully synthesized by aromatic nucleophilic polycondensation. Chain-type fluorinated and sulfonated naphthalene-based poly(arylene ether ketone) copolymers (6F-SNPAEKs) were subsequently synthesized by demethylation and sulfobutylation. The chemical structures of 6F-SNPAEKs were confirmed by 1H NMR. The 6F-SNPAEKs in acid form showed excellent thermal stability at elevated temperatures. The 6F-SNPAEK membranes were easily obtained by solution casting and properties for fuel cells were investigated in detail. The water uptake, swelling ratio and proton conductivity increased with degree of sulfonation (DS) and temperature. 6F-SNPAEK-90 showed the highest conductivity of 0.181 S cm-1 at 80 °C. The methanol permeability of the membranes was in the range of 0.238-6.49 × 10 -7 cm2 s-1, compared to 1.55 × 10 -6 cm2 s-1 for Nafion 117. The membranes also showed excellent mechanical properties: the elongation at break was greater than 15%. These results indicate that the 6F-SNPAEK membranes are a promising candidate for use in direct methanol fuel cell (DMFC) applications.

AB - A novel series of naphthalene-based poly(arylene ether ketone) copolymers containing methoxy groups and hexafluoroisopropylidene diphenyl moieties (6F-MNPAEKs) were successfully synthesized by aromatic nucleophilic polycondensation. Chain-type fluorinated and sulfonated naphthalene-based poly(arylene ether ketone) copolymers (6F-SNPAEKs) were subsequently synthesized by demethylation and sulfobutylation. The chemical structures of 6F-SNPAEKs were confirmed by 1H NMR. The 6F-SNPAEKs in acid form showed excellent thermal stability at elevated temperatures. The 6F-SNPAEK membranes were easily obtained by solution casting and properties for fuel cells were investigated in detail. The water uptake, swelling ratio and proton conductivity increased with degree of sulfonation (DS) and temperature. 6F-SNPAEK-90 showed the highest conductivity of 0.181 S cm-1 at 80 °C. The methanol permeability of the membranes was in the range of 0.238-6.49 × 10 -7 cm2 s-1, compared to 1.55 × 10 -6 cm2 s-1 for Nafion 117. The membranes also showed excellent mechanical properties: the elongation at break was greater than 15%. These results indicate that the 6F-SNPAEK membranes are a promising candidate for use in direct methanol fuel cell (DMFC) applications.

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JO - Polymer

JF - Polymer

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ER -

Fluorinated naphthalene-based poly(arylene ether ketone)s containing pendant groups for direct methanol fuel cells

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