Effect of roll press on consolidation and electric/ionic-path formation of electrodes for all-solid-state battery

This study investigated unpressed and pressed electrodes with the synchrotron radiation X-ray computed laminography (CL) technique to clarify the relationship between the packing structure formation of an electrode processed with a roll press and the performance of all-solid-state batteries. Additio...

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Autores principales:	Maria Yokota, Takuro Matsunaga
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	00-01 99-00 Industrial electrochemistry TP250-261 Electric apparatus and materials. Electric circuits. Electric networks TK452-454.4
Acceso en línea:	https://doaj.org/article/2c1627f1070c49adbaebcc0e869af350
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spelling	oai:doaj.org-article:2c1627f1070c49adbaebcc0e869af3502021-11-18T04:51:50ZEffect of roll press on consolidation and electric/ionic-path formation of electrodes for all-solid-state battery2666-248510.1016/j.powera.2021.100078https://doaj.org/article/2c1627f1070c49adbaebcc0e869af3502021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666248521000330https://doaj.org/toc/2666-2485This study investigated unpressed and pressed electrodes with the synchrotron radiation X-ray computed laminography (CL) technique to clarify the relationship between the packing structure formation of an electrode processed with a roll press and the performance of all-solid-state batteries. Additionally, we evaluated the length and thickness of percolation paths constructed by the electrode particles using the 3-dimensional structure obtained by the X-ray CL measurement. The smallest packing fraction was in the cathode layers in both the pressed and unpressed electrodes. The cathode packing fraction had a non-uniform distribution shape as a function of the layer thickness. A similar distribution shape was maintained after pressing, except near the surface in contact with the pressing roller. Pressing caused the packing fraction of the cathode layer to become much larger than the unpressed one, especially near the surface where it significantly increased. The thickness of the percolation paths in the cathode layer also increased after pressing. Furthermore, we discovered that the cathode local path thickness, measured by using regions segmented by packing fraction values, had a linear relationship with the packing fraction. Consequently, the performance bottle neck is caused by the local layer that has the smallest packing fraction.Maria YokotaTakuro MatsunagaElsevierarticle00-0199-00Industrial electrochemistryTP250-261Electric apparatus and materials. Electric circuits. Electric networksTK452-454.4ENJournal of Power Sources Advances, Vol 12, Iss , Pp 100078- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	00-01 99-00 Industrial electrochemistry TP250-261 Electric apparatus and materials. Electric circuits. Electric networks TK452-454.4
spellingShingle	00-01 99-00 Industrial electrochemistry TP250-261 Electric apparatus and materials. Electric circuits. Electric networks TK452-454.4 Maria Yokota Takuro Matsunaga Effect of roll press on consolidation and electric/ionic-path formation of electrodes for all-solid-state battery
description	This study investigated unpressed and pressed electrodes with the synchrotron radiation X-ray computed laminography (CL) technique to clarify the relationship between the packing structure formation of an electrode processed with a roll press and the performance of all-solid-state batteries. Additionally, we evaluated the length and thickness of percolation paths constructed by the electrode particles using the 3-dimensional structure obtained by the X-ray CL measurement. The smallest packing fraction was in the cathode layers in both the pressed and unpressed electrodes. The cathode packing fraction had a non-uniform distribution shape as a function of the layer thickness. A similar distribution shape was maintained after pressing, except near the surface in contact with the pressing roller. Pressing caused the packing fraction of the cathode layer to become much larger than the unpressed one, especially near the surface where it significantly increased. The thickness of the percolation paths in the cathode layer also increased after pressing. Furthermore, we discovered that the cathode local path thickness, measured by using regions segmented by packing fraction values, had a linear relationship with the packing fraction. Consequently, the performance bottle neck is caused by the local layer that has the smallest packing fraction.
format	article
author	Maria Yokota Takuro Matsunaga
author_facet	Maria Yokota Takuro Matsunaga
author_sort	Maria Yokota
title	Effect of roll press on consolidation and electric/ionic-path formation of electrodes for all-solid-state battery
title_short	Effect of roll press on consolidation and electric/ionic-path formation of electrodes for all-solid-state battery
title_full	Effect of roll press on consolidation and electric/ionic-path formation of electrodes for all-solid-state battery
title_fullStr	Effect of roll press on consolidation and electric/ionic-path formation of electrodes for all-solid-state battery
title_full_unstemmed	Effect of roll press on consolidation and electric/ionic-path formation of electrodes for all-solid-state battery
title_sort	effect of roll press on consolidation and electric/ionic-path formation of electrodes for all-solid-state battery
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/2c1627f1070c49adbaebcc0e869af350
work_keys_str_mv	AT mariayokota effectofrollpressonconsolidationandelectricionicpathformationofelectrodesforallsolidstatebattery AT takuromatsunaga effectofrollpressonconsolidationandelectricionicpathformationofelectrodesforallsolidstatebattery
_version_	1718424964087939072

Effect of roll press on consolidation and electric/ionic-path formation of electrodes for all-solid-state battery

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