Exploring the capability of mayenite (12CaO·7Al2O3) as hydrogen storage material

Abstract We utilized nanoporous mayenite (12CaO·7Al2O3), a cost-effective material, in the hydride state (H−) to explore the possibility of its use for hydrogen storage and transportation. Hydrogen desorption occurs by a simple reaction of mayenite with water, and the nanocage structure transforms i...

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Autores principales:	Heidy Visbal, Takuya Omura, Kohji Nagashima, Takanori Itoh, Tsukuru Ohwaki, Hideto Imai, Toru Ishigaki, Ayaka Maeno, Katsuaki Suzuki, Hironori Kaji, Kazuyuki Hirao
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4c7ad8d673cf4bcda5c394e9f1a19926
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spelling	oai:doaj.org-article:4c7ad8d673cf4bcda5c394e9f1a199262021-12-02T17:05:46ZExploring the capability of mayenite (12CaO·7Al2O3) as hydrogen storage material10.1038/s41598-021-85540-82045-2322https://doaj.org/article/4c7ad8d673cf4bcda5c394e9f1a199262021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85540-8https://doaj.org/toc/2045-2322Abstract We utilized nanoporous mayenite (12CaO·7Al2O3), a cost-effective material, in the hydride state (H−) to explore the possibility of its use for hydrogen storage and transportation. Hydrogen desorption occurs by a simple reaction of mayenite with water, and the nanocage structure transforms into a calcium aluminate hydrate. This reaction enables easy desorption of H− ions trapped in the structure, which could allow the use of this material in future portable applications. Additionally, this material is 100% recyclable because the cage structure can be recovered by heat treatment after hydrogen desorption. The presence of hydrogen molecules as H− ions was confirmed by 1H-NMR, gas chromatography, and neutron diffraction analyses. We confirmed the hydrogen state stability inside the mayenite cage by the first-principles calculations to understand the adsorption mechanism and storage capacity and to provide a key for the use of mayenite as a portable hydrogen storage material. Further, we succeeded in introducing H− directly from OH− by a simple process compared with previous studies that used long treatment durations and required careful control of humidity and oxygen gas to form O2 species before the introduction of H−.Heidy VisbalTakuya OmuraKohji NagashimaTakanori ItohTsukuru OhwakiHideto ImaiToru IshigakiAyaka MaenoKatsuaki SuzukiHironori KajiKazuyuki HiraoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Heidy Visbal Takuya Omura Kohji Nagashima Takanori Itoh Tsukuru Ohwaki Hideto Imai Toru Ishigaki Ayaka Maeno Katsuaki Suzuki Hironori Kaji Kazuyuki Hirao Exploring the capability of mayenite (12CaO·7Al2O3) as hydrogen storage material
description	Abstract We utilized nanoporous mayenite (12CaO·7Al2O3), a cost-effective material, in the hydride state (H−) to explore the possibility of its use for hydrogen storage and transportation. Hydrogen desorption occurs by a simple reaction of mayenite with water, and the nanocage structure transforms into a calcium aluminate hydrate. This reaction enables easy desorption of H− ions trapped in the structure, which could allow the use of this material in future portable applications. Additionally, this material is 100% recyclable because the cage structure can be recovered by heat treatment after hydrogen desorption. The presence of hydrogen molecules as H− ions was confirmed by 1H-NMR, gas chromatography, and neutron diffraction analyses. We confirmed the hydrogen state stability inside the mayenite cage by the first-principles calculations to understand the adsorption mechanism and storage capacity and to provide a key for the use of mayenite as a portable hydrogen storage material. Further, we succeeded in introducing H− directly from OH− by a simple process compared with previous studies that used long treatment durations and required careful control of humidity and oxygen gas to form O2 species before the introduction of H−.
format	article
author	Heidy Visbal Takuya Omura Kohji Nagashima Takanori Itoh Tsukuru Ohwaki Hideto Imai Toru Ishigaki Ayaka Maeno Katsuaki Suzuki Hironori Kaji Kazuyuki Hirao
author_facet	Heidy Visbal Takuya Omura Kohji Nagashima Takanori Itoh Tsukuru Ohwaki Hideto Imai Toru Ishigaki Ayaka Maeno Katsuaki Suzuki Hironori Kaji Kazuyuki Hirao
author_sort	Heidy Visbal
title	Exploring the capability of mayenite (12CaO·7Al2O3) as hydrogen storage material
title_short	Exploring the capability of mayenite (12CaO·7Al2O3) as hydrogen storage material
title_full	Exploring the capability of mayenite (12CaO·7Al2O3) as hydrogen storage material
title_fullStr	Exploring the capability of mayenite (12CaO·7Al2O3) as hydrogen storage material
title_full_unstemmed	Exploring the capability of mayenite (12CaO·7Al2O3) as hydrogen storage material
title_sort	exploring the capability of mayenite (12cao·7al2o3) as hydrogen storage material
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/4c7ad8d673cf4bcda5c394e9f1a19926
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Exploring the capability of mayenite (12CaO·7Al2O3) as hydrogen storage material

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