LiBr-coated Air Electrodes for Li-air Batteries

Li–air batteries (LAB) have a theoretical energy density as high as 3500 Wh kg−1; however, many problems remain to be addressed before their practical application. Introduction of a redox mediator (RM) is commonly applied to reduce the high overpotential of the air electrode (AE) during the charge p...

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Autores principales:	Yoshiya HAYASHI, Reo HONDA, Itsuki MORO, Mika FUKUNISHI, Hiromi OTSUKA, Yoshimi KUBO, Tatsuo HORIBA, Morihiro SAITO
Formato:	article
Lenguaje:	EN JA
Publicado:	The Electrochemical Society of Japan 2021
Materias:	li-air batteries charge overpotential redox mediator libr Technology T Physical and theoretical chemistry QD450-801
Acceso en línea:	https://doaj.org/article/a514970a5b394aadb9a830217b24f5da
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spelling	oai:doaj.org-article:a514970a5b394aadb9a830217b24f5da2021-11-05T00:17:27ZLiBr-coated Air Electrodes for Li-air Batteries2186-245110.5796/electrochemistry.21-00096https://doaj.org/article/a514970a5b394aadb9a830217b24f5da2021-11-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/electrochemistry/89/6/89_21-00096/_html/-char/enhttps://doaj.org/toc/2186-2451Li–air batteries (LAB) have a theoretical energy density as high as 3500 Wh kg−1; however, many problems remain to be addressed before their practical application. Introduction of a redox mediator (RM) is commonly applied to reduce the high overpotential of the air electrode (AE) during the charge process. We try to fix an RM on the AE by coating it with a slurry of carbon black and binder on a carbon paper substrate to enable us not only to suppress the shuttle effect but also to concentrate the RM on the surface of the AE where it works. We use LiBr as the RM in this study and compare two types of LAB cells: one with a LiBr-coated AE and the other with LiBr dissolved in the electrolyte solution. The cell with the LiBr-coated AE exhibits a better cell performance than that with the dissolved LiBr.Yoshiya HAYASHIReo HONDAItsuki MOROMika FUKUNISHIHiromi OTSUKAYoshimi KUBOTatsuo HORIBAMorihiro SAITOThe Electrochemical Society of Japanarticleli-air batteriescharge overpotentialredox mediatorlibrTechnologyTPhysical and theoretical chemistryQD450-801ENJAElectrochemistry, Vol 89, Iss 6, Pp 557-561 (2021)
institution	DOAJ
collection	DOAJ
language	EN JA
topic	li-air batteries charge overpotential redox mediator libr Technology T Physical and theoretical chemistry QD450-801
spellingShingle	li-air batteries charge overpotential redox mediator libr Technology T Physical and theoretical chemistry QD450-801 Yoshiya HAYASHI Reo HONDA Itsuki MORO Mika FUKUNISHI Hiromi OTSUKA Yoshimi KUBO Tatsuo HORIBA Morihiro SAITO LiBr-coated Air Electrodes for Li-air Batteries
description	Li–air batteries (LAB) have a theoretical energy density as high as 3500 Wh kg−1; however, many problems remain to be addressed before their practical application. Introduction of a redox mediator (RM) is commonly applied to reduce the high overpotential of the air electrode (AE) during the charge process. We try to fix an RM on the AE by coating it with a slurry of carbon black and binder on a carbon paper substrate to enable us not only to suppress the shuttle effect but also to concentrate the RM on the surface of the AE where it works. We use LiBr as the RM in this study and compare two types of LAB cells: one with a LiBr-coated AE and the other with LiBr dissolved in the electrolyte solution. The cell with the LiBr-coated AE exhibits a better cell performance than that with the dissolved LiBr.
format	article
author	Yoshiya HAYASHI Reo HONDA Itsuki MORO Mika FUKUNISHI Hiromi OTSUKA Yoshimi KUBO Tatsuo HORIBA Morihiro SAITO
author_facet	Yoshiya HAYASHI Reo HONDA Itsuki MORO Mika FUKUNISHI Hiromi OTSUKA Yoshimi KUBO Tatsuo HORIBA Morihiro SAITO
author_sort	Yoshiya HAYASHI
title	LiBr-coated Air Electrodes for Li-air Batteries
title_short	LiBr-coated Air Electrodes for Li-air Batteries
title_full	LiBr-coated Air Electrodes for Li-air Batteries
title_fullStr	LiBr-coated Air Electrodes for Li-air Batteries
title_full_unstemmed	LiBr-coated Air Electrodes for Li-air Batteries
title_sort	libr-coated air electrodes for li-air batteries
publisher	The Electrochemical Society of Japan
publishDate	2021
url	https://doaj.org/article/a514970a5b394aadb9a830217b24f5da
work_keys_str_mv	AT yoshiyahayashi librcoatedairelectrodesforliairbatteries AT reohonda librcoatedairelectrodesforliairbatteries AT itsukimoro librcoatedairelectrodesforliairbatteries AT mikafukunishi librcoatedairelectrodesforliairbatteries AT hiromiotsuka librcoatedairelectrodesforliairbatteries AT yoshimikubo librcoatedairelectrodesforliairbatteries AT tatsuohoriba librcoatedairelectrodesforliairbatteries AT morihirosaito librcoatedairelectrodesforliairbatteries
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LiBr-coated Air Electrodes for Li-air Batteries

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