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Investigations of lithium–sulfur batteries using electrochemical impedance spectroscopy

Canas, Natalia and Hirose, Kei and Pascucci, Brigitta and Wagner, Norbert and Friedrich, K. Andreas and Hiesgen, Renate (2013) Investigations of lithium–sulfur batteries using electrochemical impedance spectroscopy. Electrochimica Acta, 97, pp. 41-51. Elsevier. DOI: [10.1016/j.electacta. 2013.02.101] ISSN 0013-4686

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Official URL: http://www.elsevier.com/locate/electacta

Abstract

The electrochemical behavior of lithium–sulfur (Li–S) batteries was investigated by means of electrochemical impedance spectroscopy (EIS). Measurements were performed in equidistant charge intervals at different depths of discharge and charge during the first cycle. Additionally, the degradation of the cells was analyzed for up to 50 cycles. An equivalent electrical circuit is proposed to simulate the electrochemical processes and to quantify the impedance contributions of Li–S batteries. EIS as a function of the cycle number shows an increased capacity for fading correlated with a decrease in the charge transfer resistance of the cathode. Atomic force microscopy (AFM) was also used to provide information about changes in the electrical conductivity of the cathode surface as they are related to the building of isolating films.

Item URL in elib:https://elib.dlr.de/86908/
Document Type:Article
Title:Investigations of lithium–sulfur batteries using electrochemical impedance spectroscopy
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Canas, Natalianatalia.canas (at) dlr.deUNSPECIFIED
Hirose, Keikei.hirose (at) dlr.deUNSPECIFIED
Pascucci, Brigittabrigitta.psacucci (at) dlr.deUNSPECIFIED
Wagner, Norbertnorbert.wagner (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Hiesgen, Renaterenate.hiesgen (at) hs-esslingen.deUNSPECIFIED
Date:March 2013
Journal or Publication Title:Electrochimica Acta
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:97
DOI :[10.1016/j.electacta. 2013.02.101]
Page Range:pp. 41-51
Publisher:Elsevier
ISSN:0013-4686
Status:Published
Keywords:Lithium–sulfur battery Electrochemical impedance spectroscopy Degradation
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Fuel Cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Elektrochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Friedrich, Prof.Dr. Kaspar Andreas
Deposited On:18 Dec 2013 09:15
Last Modified:06 Sep 2019 15:16

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