Operando Monitoring of Charging Processes in Battery Cathodes by Magnetometry and Positron Annihilation

Gregor Klinser; Heinz Krenn; Roland Würschum

doi:10.4028/www.scientific.net/msf.1016.1647

Operando Monitoring of Charging Processes in Battery Cathodes by Magnetometry and Positron Annihilation

Gregor Klinser, Heinz Krenn, Roland Würschum

Institute of Materials Physics (5170)

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Abstract

Research in the field of modern battery materials demands characterization techniques which allow an inspection of atomistic processes during battery charging and discharging. Two powerful tools for this purpose are magnetometry and positron-electron annihilation. The magnetic moment serves as highly sensitive fingerprint for the oxidation state of the transition metal ions, thus enabling to identify the electrochemical “active” ions. The positron lifetime on the other hand, is sensitive to open volume defects of the size of a few missing atoms down to single vacancies providing an unique insight into lattice defects induced by charging and discharging. An overview will be given on operando magnetometry studies of the important class of LiNiCoMn-oxide cathode materials (so-called NMC with Ni:Co:Mn ratios of 1:1:1 and 3:1:1) as well as of sodium vanadium phosphate cathodes. First operando positron annihilation studies on a battery cathode material (NMC 1:1:1) demonstrate the capability of this technique for battery research.

Original language	English
Title of host publication	THERMEC 2021 - International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications
Editors	Mihail Ionescu, Christof Sommitsch, Cecilia Poletti, Ernst Kozeschnik, Tara Chandra
Pages	1647-1652
Number of pages	6
DOIs	https://doi.org/10.4028/www.scientific.net/msf.1016.1647
Publication status	Published - Jan 2021

Publication series

Name	Materials Science Forum
Publisher	Trans Tech Publications Ltd.
Volume	1016
ISSN (Print)	0255-5476

Keywords

Atomic defects
Battery cathode
Battery charging
Lattice vacancies
Li-ion battery
Magnetometry
Na-ion battery
Operando technique
Positron annihilation

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
General Materials Science

Fields of Expertise

Advanced Materials Science

Access to Document

10.4028/www.scientific.net/msf.1016.1647

Cite this

Klinser, G., Krenn, H., & Würschum, R. (2021). Operando Monitoring of Charging Processes in Battery Cathodes by Magnetometry and Positron Annihilation. In M. Ionescu, C. Sommitsch, C. Poletti, E. Kozeschnik, & T. Chandra (Eds.), THERMEC 2021 - International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications (pp. 1647-1652). (Materials Science Forum; Vol. 1016). https://doi.org/10.4028/www.scientific.net/msf.1016.1647

Operando Monitoring of Charging Processes in Battery Cathodes by Magnetometry and Positron Annihilation. / Klinser, Gregor; Krenn, Heinz; Würschum, Roland.
THERMEC 2021 - International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications. ed. / Mihail Ionescu; Christof Sommitsch; Cecilia Poletti; Ernst Kozeschnik; Tara Chandra. 2021. p. 1647-1652 (Materials Science Forum; Vol. 1016).

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Klinser, G, Krenn, H & Würschum, R 2021, Operando Monitoring of Charging Processes in Battery Cathodes by Magnetometry and Positron Annihilation. in M Ionescu, C Sommitsch, C Poletti, E Kozeschnik & T Chandra (eds), THERMEC 2021 - International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications. Materials Science Forum, vol. 1016, pp. 1647-1652. https://doi.org/10.4028/www.scientific.net/msf.1016.1647

Klinser G, Krenn H, Würschum R. Operando Monitoring of Charging Processes in Battery Cathodes by Magnetometry and Positron Annihilation. In Ionescu M, Sommitsch C, Poletti C, Kozeschnik E, Chandra T, editors, THERMEC 2021 - International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications. 2021. p. 1647-1652. (Materials Science Forum). doi: 10.4028/www.scientific.net/msf.1016.1647

Klinser, Gregor ; Krenn, Heinz ; Würschum, Roland. / Operando Monitoring of Charging Processes in Battery Cathodes by Magnetometry and Positron Annihilation. THERMEC 2021 - International Conference on Processing and Manufacturing of Advanced Materials Processing, Fabrication, Properties, Applications. editor / Mihail Ionescu ; Christof Sommitsch ; Cecilia Poletti ; Ernst Kozeschnik ; Tara Chandra. 2021. pp. 1647-1652 (Materials Science Forum).

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abstract = "Research in the field of modern battery materials demands characterization techniques which allow an inspection of atomistic processes during battery charging and discharging. Two powerful tools for this purpose are magnetometry and positron-electron annihilation. The magnetic moment serves as highly sensitive fingerprint for the oxidation state of the transition metal ions, thus enabling to identify the electrochemical “active” ions. The positron lifetime on the other hand, is sensitive to open volume defects of the size of a few missing atoms down to single vacancies providing an unique insight into lattice defects induced by charging and discharging. An overview will be given on operando magnetometry studies of the important class of LiNiCoMn-oxide cathode materials (so-called NMC with Ni:Co:Mn ratios of 1:1:1 and 3:1:1) as well as of sodium vanadium phosphate cathodes. First operando positron annihilation studies on a battery cathode material (NMC 1:1:1) demonstrate the capability of this technique for battery research.",

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AB - Research in the field of modern battery materials demands characterization techniques which allow an inspection of atomistic processes during battery charging and discharging. Two powerful tools for this purpose are magnetometry and positron-electron annihilation. The magnetic moment serves as highly sensitive fingerprint for the oxidation state of the transition metal ions, thus enabling to identify the electrochemical “active” ions. The positron lifetime on the other hand, is sensitive to open volume defects of the size of a few missing atoms down to single vacancies providing an unique insight into lattice defects induced by charging and discharging. An overview will be given on operando magnetometry studies of the important class of LiNiCoMn-oxide cathode materials (so-called NMC with Ni:Co:Mn ratios of 1:1:1 and 3:1:1) as well as of sodium vanadium phosphate cathodes. First operando positron annihilation studies on a battery cathode material (NMC 1:1:1) demonstrate the capability of this technique for battery research.

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Operando Monitoring of Charging Processes in Battery Cathodes by Magnetometry and Positron Annihilation

Abstract

Publication series

Keywords

ASJC Scopus subject areas

Fields of Expertise

Access to Document

Other files and links

Fingerprint

Battery materials: Structure and charging processes

Energy Materials & Nanomaterials

Cite this

Operando Monitoring of Charging Processes in Battery Cathodes by Magnetometry and Positron Annihilation

Abstract

Publication series

Keywords

ASJC Scopus subject areas

Fields of Expertise

Access to Document

Other files and links

Fingerprint

Projects

Battery materials: Structure and charging processes

Energy Materials & Nanomaterials

Cite this