Operando acoustic emission monitoring of degradation processes in lithium-ion batteries with a high-entropy oxide anode

Abstract In recent years, high-entropy oxides are receiving increasing attention for electrochemical energy-storage applications. Among them, the rocksalt (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O (HEO) has been shown to be a promising high-capacity anode material. Because high-entropy oxides constitute a new cl...

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Autores principales:	Simon Schweidler, Sören Lukas Dreyer, Ben Breitung, Torsten Brezesinski
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fc9403ab02d24e41abe260f0136285fd
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spelling	oai:doaj.org-article:fc9403ab02d24e41abe260f0136285fd2021-12-05T12:13:10ZOperando acoustic emission monitoring of degradation processes in lithium-ion batteries with a high-entropy oxide anode10.1038/s41598-021-02685-22045-2322https://doaj.org/article/fc9403ab02d24e41abe260f0136285fd2021-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02685-2https://doaj.org/toc/2045-2322Abstract In recent years, high-entropy oxides are receiving increasing attention for electrochemical energy-storage applications. Among them, the rocksalt (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O (HEO) has been shown to be a promising high-capacity anode material. Because high-entropy oxides constitute a new class of electrode materials, systematic understanding of their behavior during ion insertion and extraction is yet to be established. Here, we probe the conversion-type HEO material in lithium half-cells by acoustic emission (AE) monitoring. Especially the clustering of AE signals allows for correlations of acoustic events with various processes. The initial cycle was found to be the most acoustically active because of solid-electrolyte interphase formation and chemo-mechanical degradation. In the subsequent cycles, AE was mainly detected during delithiation, a finding we attribute to the progressive crack formation and propagation. Overall, the data confirm that the AE technology as a non-destructive operando technique holds promise for gaining insight into the degradation processes occurring in battery cells during cycling.Simon SchweidlerSören Lukas DreyerBen BreitungTorsten BrezesinskiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Simon Schweidler Sören Lukas Dreyer Ben Breitung Torsten Brezesinski Operando acoustic emission monitoring of degradation processes in lithium-ion batteries with a high-entropy oxide anode
description	Abstract In recent years, high-entropy oxides are receiving increasing attention for electrochemical energy-storage applications. Among them, the rocksalt (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O (HEO) has been shown to be a promising high-capacity anode material. Because high-entropy oxides constitute a new class of electrode materials, systematic understanding of their behavior during ion insertion and extraction is yet to be established. Here, we probe the conversion-type HEO material in lithium half-cells by acoustic emission (AE) monitoring. Especially the clustering of AE signals allows for correlations of acoustic events with various processes. The initial cycle was found to be the most acoustically active because of solid-electrolyte interphase formation and chemo-mechanical degradation. In the subsequent cycles, AE was mainly detected during delithiation, a finding we attribute to the progressive crack formation and propagation. Overall, the data confirm that the AE technology as a non-destructive operando technique holds promise for gaining insight into the degradation processes occurring in battery cells during cycling.
format	article
author	Simon Schweidler Sören Lukas Dreyer Ben Breitung Torsten Brezesinski
author_facet	Simon Schweidler Sören Lukas Dreyer Ben Breitung Torsten Brezesinski
author_sort	Simon Schweidler
title	Operando acoustic emission monitoring of degradation processes in lithium-ion batteries with a high-entropy oxide anode
title_short	Operando acoustic emission monitoring of degradation processes in lithium-ion batteries with a high-entropy oxide anode
title_full	Operando acoustic emission monitoring of degradation processes in lithium-ion batteries with a high-entropy oxide anode
title_fullStr	Operando acoustic emission monitoring of degradation processes in lithium-ion batteries with a high-entropy oxide anode
title_full_unstemmed	Operando acoustic emission monitoring of degradation processes in lithium-ion batteries with a high-entropy oxide anode
title_sort	operando acoustic emission monitoring of degradation processes in lithium-ion batteries with a high-entropy oxide anode
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/fc9403ab02d24e41abe260f0136285fd
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_version_	1718372172433457152

Operando acoustic emission monitoring of degradation processes in lithium-ion batteries with a high-entropy oxide anode

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