Modifications on Promoting the Proton Conductivity of Polybenzimidazole-Based Polymer Electrolyte Membranes in Fuel Cells

Hydrogen-air proton exchange membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs) are excellent fuel cells with high limits of energy density. However, the low carbon monoxide (CO) tolerance of the Pt electrode catalyst in hydrogen-air PEMFCs and methanol permanent in DMFCs greatly hi...

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Autores principales:	Junyu Chen, Jiamu Cao, Rongji Zhang, Jing Zhou, Shimin Wang, Xu Liu, Tinghe Zhang, Xinyuan Tao, Yufeng Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	polybenzimidazole polymer electrolyte membrane proton exchange membrane PEMFC DMFC proton conductivity Chemical technology TP1-1185 Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/2d48c8e50a54412aa175f2b85a1aaa30
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spelling	oai:doaj.org-article:2d48c8e50a54412aa175f2b85a1aaa302021-11-25T18:19:38ZModifications on Promoting the Proton Conductivity of Polybenzimidazole-Based Polymer Electrolyte Membranes in Fuel Cells10.3390/membranes111108262077-0375https://doaj.org/article/2d48c8e50a54412aa175f2b85a1aaa302021-10-01T00:00:00Zhttps://www.mdpi.com/2077-0375/11/11/826https://doaj.org/toc/2077-0375Hydrogen-air proton exchange membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs) are excellent fuel cells with high limits of energy density. However, the low carbon monoxide (CO) tolerance of the Pt electrode catalyst in hydrogen-air PEMFCs and methanol permanent in DMFCs greatly hindered their extensive use. Applying polybenzimidazole (PBI) membranes can avoid these problems. The high thermal stability allows PBI membranes to work at elevated temperatures when the CO tolerance can be significantly improved; the excellent methanol resistance also makes it suitable for DMFCs. However, the poor proton conductivity of pristine PBI makes it hard to be directly applied in fuel cells. In the past decades, researchers have made great efforts to promote the proton conductivity of PBI membranes, and various effective modification methods have been proposed. To provide engineers and researchers with a basis to further promote the properties of fuel cells with PBI membranes, this paper reviews critical researches on the modification of PBI membranes in both hydrogen-air PEMFCs and DMFCs aiming at promoting the proton conductivity. The modification methods have been classified and the obtained properties have been included. A guide for designing modifications on PBI membranes for high-performance fuel cells is provided.Junyu ChenJiamu CaoRongji ZhangJing ZhouShimin WangXu LiuTinghe ZhangXinyuan TaoYufeng ZhangMDPI AGarticlepolybenzimidazolepolymer electrolyte membraneproton exchange membranePEMFCDMFCproton conductivityChemical technologyTP1-1185Chemical engineeringTP155-156ENMembranes, Vol 11, Iss 826, p 826 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	polybenzimidazole polymer electrolyte membrane proton exchange membrane PEMFC DMFC proton conductivity Chemical technology TP1-1185 Chemical engineering TP155-156
spellingShingle	polybenzimidazole polymer electrolyte membrane proton exchange membrane PEMFC DMFC proton conductivity Chemical technology TP1-1185 Chemical engineering TP155-156 Junyu Chen Jiamu Cao Rongji Zhang Jing Zhou Shimin Wang Xu Liu Tinghe Zhang Xinyuan Tao Yufeng Zhang Modifications on Promoting the Proton Conductivity of Polybenzimidazole-Based Polymer Electrolyte Membranes in Fuel Cells
description	Hydrogen-air proton exchange membrane fuel cells (PEMFCs) and direct methanol fuel cells (DMFCs) are excellent fuel cells with high limits of energy density. However, the low carbon monoxide (CO) tolerance of the Pt electrode catalyst in hydrogen-air PEMFCs and methanol permanent in DMFCs greatly hindered their extensive use. Applying polybenzimidazole (PBI) membranes can avoid these problems. The high thermal stability allows PBI membranes to work at elevated temperatures when the CO tolerance can be significantly improved; the excellent methanol resistance also makes it suitable for DMFCs. However, the poor proton conductivity of pristine PBI makes it hard to be directly applied in fuel cells. In the past decades, researchers have made great efforts to promote the proton conductivity of PBI membranes, and various effective modification methods have been proposed. To provide engineers and researchers with a basis to further promote the properties of fuel cells with PBI membranes, this paper reviews critical researches on the modification of PBI membranes in both hydrogen-air PEMFCs and DMFCs aiming at promoting the proton conductivity. The modification methods have been classified and the obtained properties have been included. A guide for designing modifications on PBI membranes for high-performance fuel cells is provided.
format	article
author	Junyu Chen Jiamu Cao Rongji Zhang Jing Zhou Shimin Wang Xu Liu Tinghe Zhang Xinyuan Tao Yufeng Zhang
author_facet	Junyu Chen Jiamu Cao Rongji Zhang Jing Zhou Shimin Wang Xu Liu Tinghe Zhang Xinyuan Tao Yufeng Zhang
author_sort	Junyu Chen
title	Modifications on Promoting the Proton Conductivity of Polybenzimidazole-Based Polymer Electrolyte Membranes in Fuel Cells
title_short	Modifications on Promoting the Proton Conductivity of Polybenzimidazole-Based Polymer Electrolyte Membranes in Fuel Cells
title_full	Modifications on Promoting the Proton Conductivity of Polybenzimidazole-Based Polymer Electrolyte Membranes in Fuel Cells
title_fullStr	Modifications on Promoting the Proton Conductivity of Polybenzimidazole-Based Polymer Electrolyte Membranes in Fuel Cells
title_full_unstemmed	Modifications on Promoting the Proton Conductivity of Polybenzimidazole-Based Polymer Electrolyte Membranes in Fuel Cells
title_sort	modifications on promoting the proton conductivity of polybenzimidazole-based polymer electrolyte membranes in fuel cells
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2d48c8e50a54412aa175f2b85a1aaa30
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Modifications on Promoting the Proton Conductivity of Polybenzimidazole-Based Polymer Electrolyte Membranes in Fuel Cells

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