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Spatially resolved in operando neutron scattering studies on Li-ion batteries

Senyshyn, Anatoliy and Mühlbauer, M. J. and Dolotko, O. and Hofmann, M. and Pirling, Thilo and Ehrenberg, Helmut (2014):
Spatially resolved in operando neutron scattering studies on Li-ion batteries.
In: Journal of Power Sources, pp. 678-683, 245, ISSN 03787753,
[Online-Edition: http://dx.doi.org/10.1016/j.jpowsour.2013.06.158],
[Article]

Abstract

Spatially-resolved neutron diffraction has been applied to probe the lithium distribution in radial direction of a commercial Li-ion cell of 18650-type. The spatial evolution of selected Bragg reflections for LiCoO2 (positive electrode, “cathode”) and graphite and lithium intercalated graphite (negative electrode, “anode”) was observed and evaluated by taking beam attenuation and cell geometry effects into account. No evidences for lithium inhomogeneities have been found for the investigated set of cells. Computed neutron tomography using a monochromatic neutron beam confirmed the homogeneous lithium distribution. The relevance of the monochromatic beam to neutron imaging studies of Li-ion cells is discussed.

Item Type: Article
Erschienen: 2014
Creators: Senyshyn, Anatoliy and Mühlbauer, M. J. and Dolotko, O. and Hofmann, M. and Pirling, Thilo and Ehrenberg, Helmut
Title: Spatially resolved in operando neutron scattering studies on Li-ion batteries
Language: English
Abstract:

Spatially-resolved neutron diffraction has been applied to probe the lithium distribution in radial direction of a commercial Li-ion cell of 18650-type. The spatial evolution of selected Bragg reflections for LiCoO2 (positive electrode, “cathode”) and graphite and lithium intercalated graphite (negative electrode, “anode”) was observed and evaluated by taking beam attenuation and cell geometry effects into account. No evidences for lithium inhomogeneities have been found for the investigated set of cells. Computed neutron tomography using a monochromatic neutron beam confirmed the homogeneous lithium distribution. The relevance of the monochromatic beam to neutron imaging studies of Li-ion cells is discussed.

Journal or Publication Title: Journal of Power Sources
Volume: 245
Uncontrolled Keywords: Li-ion battery; In operando studies; Fatigue effect; Spatial lithium distribution; Neutron powder diffraction; Neutron radiography and tomography
Divisions: Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > T - Transfer projects
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > T - Transfer projects > Subproject T1: in operando“ studies of materials fatigue in commercial battery-types by neutron tomography and diffraction
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 28 Apr 2014 09:47
Official URL: http://dx.doi.org/10.1016/j.jpowsour.2013.06.158
Additional Information:

SFB 595 T2

Identification Number: doi:10.1016/j.jpowsour.2013.06.158
Funders: This work was supported by Deutsche Forschungsgemeinschaft (Research Collaborative Centre 595 “Electrical Fatigue in Functional Materials”).
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