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Operando X-ray diffraction during battery cycling at elevated temperatures: A quantitative analysis of lithium-graphite intercalation compounds

Cañas, Natalia A. and Einsiedel, Phillipp and Freitag, Thomas Oliver and Heim, Christopher and Steinhauer, Miriam and Park, Dong Won and Friedrich, K. Andreas (2017) Operando X-ray diffraction during battery cycling at elevated temperatures: A quantitative analysis of lithium-graphite intercalation compounds. Carbon, 116, pp. 255-263. Elsevier. DOI: 10.1016/j.carbon.2017.02.002 ISSN 0008-6223

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Abstract

The application of in situ or operando characterization techniques is highly important to gain a deeper nderstanding of the electrochemical and degradation processes that occur during battery cycling. This work presents the first results of operando X-ray diffraction (XRD) studies of a battery at elevated temperatures. Our in situ-cell was developed to simultaneously investigate the structural and electrochemical behaviors of batteries at room temperature and elevated temperatures. The cell design was applied to high temperature operando XRD measurements of graphite half-cells (vs. Li/Liþ). New results on the structural behavior of graphite during lithium intercalation and deintercalation were obtained at elevated temperature (30 �C and 47 �C). At these peratures, the classical staging mechanisms does not occur, and instead, several stages coexist. The average spacing between the graphene layers was calculated for phases in the single-stage region and those at which several stages coexist for different depths of charge and discharge and at different C-rates. Through this work, we aim to stimulate further operando XRD studies on battery materials' temperature behavior during cycling.

Item URL in elib:https://elib.dlr.de/117118/
Document Type:Article
Title:Operando X-ray diffraction during battery cycling at elevated temperatures: A quantitative analysis of lithium-graphite intercalation compounds
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Cañas, Natalia A.natalia.canas (at) dlr.deUNSPECIFIED
Einsiedel, PhillippUNSPECIFIEDUNSPECIFIED
Freitag, Thomas OliverThomas.Freitag (at) dlr.deUNSPECIFIED
Heim, ChristopherChristopher.Heim (at) dlr.deUNSPECIFIED
Steinhauer, Miriammiriam.steinhauer (at) dlr.deUNSPECIFIED
Park, Dong WonDong-Won.Park (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Date:February 2017
Journal or Publication Title:Carbon
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:116
DOI :10.1016/j.carbon.2017.02.002
Page Range:pp. 255-263
Publisher:Elsevier
ISSN:0008-6223
Status:Published
Keywords:In situ Operando X-ray diffraction Batteries Graphite Elevated temperature
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Electrochemical Energy Storage
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Electrochemical Prcesses (Batteries)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Friedrich, Prof.Dr. Kaspar Andreas
Deposited On:21 Dec 2017 15:41
Last Modified:21 Dec 2017 15:41

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