Design and Optimization of a Hyper-Branched Polyimide Proton Exchange Membrane with Ultra-High Methanol-Permeation Resistivity for Direct Methanol Fuel Cells Applications

A hyper-branched sulfonated polyimide (s-PI) was synthesized successfully and composited with polyvinylidene fluoride (PVDF) to achieve ultra-high methanol-permeation resistive for direct methanol fuel cell application. The optimized s-PI-PVDF composite membrane exhibited methanol resistivity low to...

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Autores principales: Ma, Liying, Xu, Guoxiao, Li, Shuai, Ma, Jiao, Li, Jing, Cai, Weiwei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6403707/
https://www.ncbi.nlm.nih.gov/pubmed/30961100
http://dx.doi.org/10.3390/polym10101175
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author Ma, Liying
Xu, Guoxiao
Li, Shuai
Ma, Jiao
Li, Jing
Cai, Weiwei
author_facet Ma, Liying
Xu, Guoxiao
Li, Shuai
Ma, Jiao
Li, Jing
Cai, Weiwei
author_sort Ma, Liying
collection PubMed
description A hyper-branched sulfonated polyimide (s-PI) was synthesized successfully and composited with polyvinylidene fluoride (PVDF) to achieve ultra-high methanol-permeation resistive for direct methanol fuel cell application. The optimized s-PI-PVDF composite membrane exhibited methanol resistivity low to 1.80 × 10(−8) cm(2)/s, two orders of magnitude lower than the value of the commercial Nafion 117 membrane (60 × 10(−7) cm(2)/s). At the same time, the tensile strength of the composite membrane is 22 MPa, which is comparable to the value of the Nafion 117 membrane. Therefore, the composite membrane is promising for application in direct methanol fuel cell.
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spelling pubmed-64037072019-04-02 Design and Optimization of a Hyper-Branched Polyimide Proton Exchange Membrane with Ultra-High Methanol-Permeation Resistivity for Direct Methanol Fuel Cells Applications Ma, Liying Xu, Guoxiao Li, Shuai Ma, Jiao Li, Jing Cai, Weiwei Polymers (Basel) Article A hyper-branched sulfonated polyimide (s-PI) was synthesized successfully and composited with polyvinylidene fluoride (PVDF) to achieve ultra-high methanol-permeation resistive for direct methanol fuel cell application. The optimized s-PI-PVDF composite membrane exhibited methanol resistivity low to 1.80 × 10(−8) cm(2)/s, two orders of magnitude lower than the value of the commercial Nafion 117 membrane (60 × 10(−7) cm(2)/s). At the same time, the tensile strength of the composite membrane is 22 MPa, which is comparable to the value of the Nafion 117 membrane. Therefore, the composite membrane is promising for application in direct methanol fuel cell. MDPI 2018-10-22 /pmc/articles/PMC6403707/ /pubmed/30961100 http://dx.doi.org/10.3390/polym10101175 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ma, Liying
Xu, Guoxiao
Li, Shuai
Ma, Jiao
Li, Jing
Cai, Weiwei
Design and Optimization of a Hyper-Branched Polyimide Proton Exchange Membrane with Ultra-High Methanol-Permeation Resistivity for Direct Methanol Fuel Cells Applications
title Design and Optimization of a Hyper-Branched Polyimide Proton Exchange Membrane with Ultra-High Methanol-Permeation Resistivity for Direct Methanol Fuel Cells Applications
title_full Design and Optimization of a Hyper-Branched Polyimide Proton Exchange Membrane with Ultra-High Methanol-Permeation Resistivity for Direct Methanol Fuel Cells Applications
title_fullStr Design and Optimization of a Hyper-Branched Polyimide Proton Exchange Membrane with Ultra-High Methanol-Permeation Resistivity for Direct Methanol Fuel Cells Applications
title_full_unstemmed Design and Optimization of a Hyper-Branched Polyimide Proton Exchange Membrane with Ultra-High Methanol-Permeation Resistivity for Direct Methanol Fuel Cells Applications
title_short Design and Optimization of a Hyper-Branched Polyimide Proton Exchange Membrane with Ultra-High Methanol-Permeation Resistivity for Direct Methanol Fuel Cells Applications
title_sort design and optimization of a hyper-branched polyimide proton exchange membrane with ultra-high methanol-permeation resistivity for direct methanol fuel cells applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6403707/
https://www.ncbi.nlm.nih.gov/pubmed/30961100
http://dx.doi.org/10.3390/polym10101175
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