A Composite Anion Conducting Membrane Based on Quaternized Cellulose and Poly(Phenylene Oxide) for Alkaline Fuel Cell Applications

A Composite Anion Conducting Membrane Based on Quaternized Cellulose and Poly(Phenylene Oxide) for Alkaline Fuel Cell Applications

In this study, composite anion exchange membranes (AEMs) were synthesized by cross-linking poly(phenylene oxide) (PPO) with cellulose functionalized by 1,4-diazabicyclo[2.2.2]-octane (DABCO) or di-guanidine (DG). The structural and morphological characteristics of the synthesized AEMs were character...

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Main Authors: Dong Ho Kang, Gautam Das, Hyon Hee Yoon, Il Tae Kim
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Polymers
Subjects:
anion exchange membrane
urea fuel cell
quaternized cellulose
composite
cross-linking
Online Access:https://www.mdpi.com/2073-4360/12/11/2676
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spelling doaj-877cb13c1dbc4e33bfddd869d1433f402020-11-25T04:06:01ZengMDPI AGPolymers2073-43602020-11-01122676267610.3390/polym12112676A Composite Anion Conducting Membrane Based on Quaternized Cellulose and Poly(Phenylene Oxide) for Alkaline Fuel Cell ApplicationsDong Ho Kang0Gautam Das1Hyon Hee Yoon2Il Tae Kim3Department of Chemical and Biological Engineering, Gachon University, Seongnam-si 461-701, KoreaDepartment of Chemical Engineering, Hanyang University (Erica Campus), Ansan-si 15588, KoreaDepartment of Chemical and Biological Engineering, Gachon University, Seongnam-si 461-701, KoreaDepartment of Chemical and Biological Engineering, Gachon University, Seongnam-si 461-701, KoreaIn this study, composite anion exchange membranes (AEMs) were synthesized by cross-linking poly(phenylene oxide) (PPO) with cellulose functionalized by 1,4-diazabicyclo[2.2.2]-octane (DABCO) or di-guanidine (DG). The structural and morphological characteristics of the synthesized AEMs were characterized by FTIR, <sup>1</sup>H-NMR, SEM, TEM, and AFM, while their performance was evaluated in terms of ionic conductivity, water uptake, ion exchange capacity, and tensile strength with respect to the loading of the quaternized cellulose in the quaternized PPO (qPPO) matrix. The composite AEMs exhibited considerably enhanced mechanical and alkaline stability as well as good anion conductivity. The composite AEM with 7 wt% of cellulose functionalized with DG in the qPPO matrix (qPPO/DG-Cel7) exhibited a maximum hydroxide conductivity of 0.164 S cm⁻<sup>1</sup>. Furthermore, a urea/O<sub>2</sub> fuel cell prepared using this composite membrane showed a maximum power density of 12.3 mW cm⁻<sup>2</sup>. The results indicated that the cellulose-based composite membranes showed a satisfactory performance in alkaline fuel cell applications.https://www.mdpi.com/2073-4360/12/11/2676anion exchange membraneurea fuel cellquaternized cellulosecompositecross-linking
collection DOAJ
language English
format Article
sources DOAJ
author Dong Ho Kang
Gautam Das
Hyon Hee Yoon
Il Tae Kim
spellingShingle Dong Ho Kang
Gautam Das
Hyon Hee Yoon
Il Tae Kim
A Composite Anion Conducting Membrane Based on Quaternized Cellulose and Poly(Phenylene Oxide) for Alkaline Fuel Cell Applications
Polymers
anion exchange membrane
urea fuel cell
quaternized cellulose
composite
cross-linking
author_facet Dong Ho Kang
Gautam Das
Hyon Hee Yoon
Il Tae Kim
author_sort Dong Ho Kang
title A Composite Anion Conducting Membrane Based on Quaternized Cellulose and Poly(Phenylene Oxide) for Alkaline Fuel Cell Applications
title_short A Composite Anion Conducting Membrane Based on Quaternized Cellulose and Poly(Phenylene Oxide) for Alkaline Fuel Cell Applications
title_full A Composite Anion Conducting Membrane Based on Quaternized Cellulose and Poly(Phenylene Oxide) for Alkaline Fuel Cell Applications
title_fullStr A Composite Anion Conducting Membrane Based on Quaternized Cellulose and Poly(Phenylene Oxide) for Alkaline Fuel Cell Applications
title_full_unstemmed A Composite Anion Conducting Membrane Based on Quaternized Cellulose and Poly(Phenylene Oxide) for Alkaline Fuel Cell Applications
title_sort composite anion conducting membrane based on quaternized cellulose and poly(phenylene oxide) for alkaline fuel cell applications
publisher MDPI AG
series Polymers
issn 2073-4360
publishDate 2020-11-01
description In this study, composite anion exchange membranes (AEMs) were synthesized by cross-linking poly(phenylene oxide) (PPO) with cellulose functionalized by 1,4-diazabicyclo[2.2.2]-octane (DABCO) or di-guanidine (DG). The structural and morphological characteristics of the synthesized AEMs were characterized by FTIR, <sup>1</sup>H-NMR, SEM, TEM, and AFM, while their performance was evaluated in terms of ionic conductivity, water uptake, ion exchange capacity, and tensile strength with respect to the loading of the quaternized cellulose in the quaternized PPO (qPPO) matrix. The composite AEMs exhibited considerably enhanced mechanical and alkaline stability as well as good anion conductivity. The composite AEM with 7 wt% of cellulose functionalized with DG in the qPPO matrix (qPPO/DG-Cel7) exhibited a maximum hydroxide conductivity of 0.164 S cm⁻<sup>1</sup>. Furthermore, a urea/O<sub>2</sub> fuel cell prepared using this composite membrane showed a maximum power density of 12.3 mW cm⁻<sup>2</sup>. The results indicated that the cellulose-based composite membranes showed a satisfactory performance in alkaline fuel cell applications.
topic anion exchange membrane
urea fuel cell
quaternized cellulose
composite
cross-linking
url https://www.mdpi.com/2073-4360/12/11/2676
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