Crosslinked Sulfonated Polyphenylsulfone (CSPPSU) Membranes for Elevated-Temperature PEM Water Electrolysis

In order to reduce the burden on the environment, there is a need to develop non-fluorinated electrolyte membranes as alternatives to fluorinated electrolyte membranes, and water electrolysis using hydrocarbon-based electrolyte membranes has been studied in recent years. In this paper, for the first...

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Autores principales:	Jedeok Kim, Akihiro Ohira
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	engineering plastic PPSU hydrocarbon electrolytes CSPPSU membrane PEM water electrolysis elevated temperature Chemical technology TP1-1185 Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/1889407b87f64b70abce892a36d3992c
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spelling	oai:doaj.org-article:1889407b87f64b70abce892a36d3992c2021-11-25T18:19:53ZCrosslinked Sulfonated Polyphenylsulfone (CSPPSU) Membranes for Elevated-Temperature PEM Water Electrolysis10.3390/membranes111108612077-0375https://doaj.org/article/1889407b87f64b70abce892a36d3992c2021-11-01T00:00:00Zhttps://www.mdpi.com/2077-0375/11/11/861https://doaj.org/toc/2077-0375In order to reduce the burden on the environment, there is a need to develop non-fluorinated electrolyte membranes as alternatives to fluorinated electrolyte membranes, and water electrolysis using hydrocarbon-based electrolyte membranes has been studied in recent years. In this paper, for the first time, we report elevated-temperature water electrolysis properties of crosslinked sulfonated polyphenylsulfone (CSPPSU) membranes prepared by sulfonation and crosslinking of hydrocarbon-based PPSU engineering plastics. The sulfone groups of the CSPPSU membrane in water were stable at 85 °C (3600 h) and 150 °C (2184 h). In addition, the polymer structure of the CSPPSU membrane was stable during small-angle X-ray scattering (SAXS) measurements from room temperature to 180 °C. A current density of 456 mA/cm<sup>2</sup> was obtained at 150 °C and 1.8 V in water electrolysis using the CSPPSU membrane and IrO<sub>2</sub>/Ti as the catalytic electrode for oxygen evolution. The stability of the CSPPSU membrane at elevated temperatures with time was evaluated. There were some issues in the assembly of the CSPPSU membrane and the catalytic electrode. However, the CSPPSU membrane has the potential to be used as an electrolyte membrane for elevated-temperature water electrolysis.Jedeok KimAkihiro OhiraMDPI AGarticleengineering plastic PPSUhydrocarbon electrolytesCSPPSU membranePEM water electrolysiselevated temperatureChemical technologyTP1-1185Chemical engineeringTP155-156ENMembranes, Vol 11, Iss 861, p 861 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	engineering plastic PPSU hydrocarbon electrolytes CSPPSU membrane PEM water electrolysis elevated temperature Chemical technology TP1-1185 Chemical engineering TP155-156
spellingShingle	engineering plastic PPSU hydrocarbon electrolytes CSPPSU membrane PEM water electrolysis elevated temperature Chemical technology TP1-1185 Chemical engineering TP155-156 Jedeok Kim Akihiro Ohira Crosslinked Sulfonated Polyphenylsulfone (CSPPSU) Membranes for Elevated-Temperature PEM Water Electrolysis
description	In order to reduce the burden on the environment, there is a need to develop non-fluorinated electrolyte membranes as alternatives to fluorinated electrolyte membranes, and water electrolysis using hydrocarbon-based electrolyte membranes has been studied in recent years. In this paper, for the first time, we report elevated-temperature water electrolysis properties of crosslinked sulfonated polyphenylsulfone (CSPPSU) membranes prepared by sulfonation and crosslinking of hydrocarbon-based PPSU engineering plastics. The sulfone groups of the CSPPSU membrane in water were stable at 85 °C (3600 h) and 150 °C (2184 h). In addition, the polymer structure of the CSPPSU membrane was stable during small-angle X-ray scattering (SAXS) measurements from room temperature to 180 °C. A current density of 456 mA/cm<sup>2</sup> was obtained at 150 °C and 1.8 V in water electrolysis using the CSPPSU membrane and IrO<sub>2</sub>/Ti as the catalytic electrode for oxygen evolution. The stability of the CSPPSU membrane at elevated temperatures with time was evaluated. There were some issues in the assembly of the CSPPSU membrane and the catalytic electrode. However, the CSPPSU membrane has the potential to be used as an electrolyte membrane for elevated-temperature water electrolysis.
format	article
author	Jedeok Kim Akihiro Ohira
author_facet	Jedeok Kim Akihiro Ohira
author_sort	Jedeok Kim
title	Crosslinked Sulfonated Polyphenylsulfone (CSPPSU) Membranes for Elevated-Temperature PEM Water Electrolysis
title_short	Crosslinked Sulfonated Polyphenylsulfone (CSPPSU) Membranes for Elevated-Temperature PEM Water Electrolysis
title_full	Crosslinked Sulfonated Polyphenylsulfone (CSPPSU) Membranes for Elevated-Temperature PEM Water Electrolysis
title_fullStr	Crosslinked Sulfonated Polyphenylsulfone (CSPPSU) Membranes for Elevated-Temperature PEM Water Electrolysis
title_full_unstemmed	Crosslinked Sulfonated Polyphenylsulfone (CSPPSU) Membranes for Elevated-Temperature PEM Water Electrolysis
title_sort	crosslinked sulfonated polyphenylsulfone (csppsu) membranes for elevated-temperature pem water electrolysis
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/1889407b87f64b70abce892a36d3992c
work_keys_str_mv	AT jedeokkim crosslinkedsulfonatedpolyphenylsulfonecsppsumembranesforelevatedtemperaturepemwaterelectrolysis AT akihiroohira crosslinkedsulfonatedpolyphenylsulfonecsppsumembranesforelevatedtemperaturepemwaterelectrolysis
_version_	1718411304772829184

Crosslinked Sulfonated Polyphenylsulfone (CSPPSU) Membranes for Elevated-Temperature PEM Water Electrolysis

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