3D‐Zipped Interface: In Situ Covalent‐Locking for High Performance of Anion Exchange Membrane Fuel Cells

Abstract Polymer electrolyte membrane fuel cells can generate high power using a potentially green fuel (H2) and zero emissions of greenhouse gas (CO2). However, significant mass transport resistances in the interface region of the membrane electrode assemblies (MEAs), between the membrane and the c...

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Autores principales:	Xian Liang, Xiaolin Ge, Yubin He, Mai Xu, Muhammad A. Shehzad, Fangmeng Sheng, Rachida Bance‐Soualhi, Jianjun Zhang, Weisheng Yu, Zijuan Ge, Chengpeng Wei, Wanjie Song, Jinlan Peng, John R. Varcoe, Liang Wu, Tongwen Xu
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	catalyst layers fuel cells membrane electrode assembly interfaces ionomers Science Q
Acceso en línea:	https://doaj.org/article/ce57317d7e644e758d5b7a0344fe6e07
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spelling	oai:doaj.org-article:ce57317d7e644e758d5b7a0344fe6e072021-11-17T08:40:31Z3D‐Zipped Interface: In Situ Covalent‐Locking for High Performance of Anion Exchange Membrane Fuel Cells2198-384410.1002/advs.202102637https://doaj.org/article/ce57317d7e644e758d5b7a0344fe6e072021-11-01T00:00:00Zhttps://doi.org/10.1002/advs.202102637https://doaj.org/toc/2198-3844Abstract Polymer electrolyte membrane fuel cells can generate high power using a potentially green fuel (H2) and zero emissions of greenhouse gas (CO2). However, significant mass transport resistances in the interface region of the membrane electrode assemblies (MEAs), between the membrane and the catalyst layers remains a barrier to achieving MEAs with high power densities and long‐term stabilities. Here, a 3D‐interfacial zipping concept is presented to overcome this challenge. Vinylbenzyl‐terminated bi‐cationic quaternary‐ammonium‐based polyelectrolyte is employed as both the anionomer in the anion‐exchange membrane (AEM) and catalyst layers. A quaternary‐ammonium‐containing covalently locked interface is formed by thermally induced inter‐crosslinking of the terminal vinyl groups. Ex situ evaluation of interfacial bonding strength and in situ durability tests demonstrate that this 3D‐zipped interface strategy prevents interfacial delamination without any sacrifice of fuel cell performance. A H2/O2 AEMFC test demonstration shows promisingly high power densities (1.5 W cm−2 at 70 °C with 100% RH and 0.2 MPa backpressure gas feeds), which can retain performances for at least 120 h at a usefully high current density of 0.6 A cm−2.Xian LiangXiaolin GeYubin HeMai XuMuhammad A. ShehzadFangmeng ShengRachida Bance‐SoualhiJianjun ZhangWeisheng YuZijuan GeChengpeng WeiWanjie SongJinlan PengJohn R. VarcoeLiang WuTongwen XuWileyarticlecatalyst layersfuel cellsmembrane electrode assemblyinterfacesionomersScienceQENAdvanced Science, Vol 8, Iss 22, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	catalyst layers fuel cells membrane electrode assembly interfaces ionomers Science Q
spellingShingle	catalyst layers fuel cells membrane electrode assembly interfaces ionomers Science Q Xian Liang Xiaolin Ge Yubin He Mai Xu Muhammad A. Shehzad Fangmeng Sheng Rachida Bance‐Soualhi Jianjun Zhang Weisheng Yu Zijuan Ge Chengpeng Wei Wanjie Song Jinlan Peng John R. Varcoe Liang Wu Tongwen Xu 3D‐Zipped Interface: In Situ Covalent‐Locking for High Performance of Anion Exchange Membrane Fuel Cells
description	Abstract Polymer electrolyte membrane fuel cells can generate high power using a potentially green fuel (H2) and zero emissions of greenhouse gas (CO2). However, significant mass transport resistances in the interface region of the membrane electrode assemblies (MEAs), between the membrane and the catalyst layers remains a barrier to achieving MEAs with high power densities and long‐term stabilities. Here, a 3D‐interfacial zipping concept is presented to overcome this challenge. Vinylbenzyl‐terminated bi‐cationic quaternary‐ammonium‐based polyelectrolyte is employed as both the anionomer in the anion‐exchange membrane (AEM) and catalyst layers. A quaternary‐ammonium‐containing covalently locked interface is formed by thermally induced inter‐crosslinking of the terminal vinyl groups. Ex situ evaluation of interfacial bonding strength and in situ durability tests demonstrate that this 3D‐zipped interface strategy prevents interfacial delamination without any sacrifice of fuel cell performance. A H2/O2 AEMFC test demonstration shows promisingly high power densities (1.5 W cm−2 at 70 °C with 100% RH and 0.2 MPa backpressure gas feeds), which can retain performances for at least 120 h at a usefully high current density of 0.6 A cm−2.
format	article
author	Xian Liang Xiaolin Ge Yubin He Mai Xu Muhammad A. Shehzad Fangmeng Sheng Rachida Bance‐Soualhi Jianjun Zhang Weisheng Yu Zijuan Ge Chengpeng Wei Wanjie Song Jinlan Peng John R. Varcoe Liang Wu Tongwen Xu
author_facet	Xian Liang Xiaolin Ge Yubin He Mai Xu Muhammad A. Shehzad Fangmeng Sheng Rachida Bance‐Soualhi Jianjun Zhang Weisheng Yu Zijuan Ge Chengpeng Wei Wanjie Song Jinlan Peng John R. Varcoe Liang Wu Tongwen Xu
author_sort	Xian Liang
title	3D‐Zipped Interface: In Situ Covalent‐Locking for High Performance of Anion Exchange Membrane Fuel Cells
title_short	3D‐Zipped Interface: In Situ Covalent‐Locking for High Performance of Anion Exchange Membrane Fuel Cells
title_full	3D‐Zipped Interface: In Situ Covalent‐Locking for High Performance of Anion Exchange Membrane Fuel Cells
title_fullStr	3D‐Zipped Interface: In Situ Covalent‐Locking for High Performance of Anion Exchange Membrane Fuel Cells
title_full_unstemmed	3D‐Zipped Interface: In Situ Covalent‐Locking for High Performance of Anion Exchange Membrane Fuel Cells
title_sort	3d‐zipped interface: in situ covalent‐locking for high performance of anion exchange membrane fuel cells
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/ce57317d7e644e758d5b7a0344fe6e07
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3D‐Zipped Interface: In Situ Covalent‐Locking for High Performance of Anion Exchange Membrane Fuel Cells

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