Canas, Natalia and Friedrich, K. Andreas and Hirose, Kei and Wagner, Norbert and Pascucci, Brigitta and Hiesgen, Renate (2013) Investigation of rechargeable lithium-sulfur batteries by in-situ techniques: Insight into interfacial processes. 64th Annual Meeting Int. Society of Electrochemistry, 16.-19. Sept. 2013, Queretaro, Mexiko.
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Abstract
The lithium-sulfur (Li-S) battery is currently of great interest for the research community. This battery promises with its high theoretical capacity (1675 mA h-1) and energy density (2600 Wh kg-1) to be one of the energy storage systems of the future. Nevertheless, the electrochemical processes and degradation mechanisms of the cell are still not well understood. In this work, in-situ characterization methods were applied for the characterization of reaction products and changes in the electrode properties. By means of XRD, the formation of reaction products during charging and discharging was monitored in operando. The formation of di-lithium sulfide and the recrystallization of sulfur have been semi-quantitatively determined. The electrochemical behavior of the cell was also investigated using electrochemical impedance spectroscopy (EIS) at different depths of discharge and charge; and up to 50 cycles. An electrical circuit is proposed to quantify the impedance contribution of the cell. Changes in the electrolyte resistance and charge transfer resistance due layer formation on the electrode are amongst others the analyzed processes in this research. Furthermore, ex-situ atomic force microscopy (AFM) measurements provide information about changes in the electrical conductivity of the cathode surface
Item URL in elib: | https://elib.dlr.de/84594/ | |||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Poster) | |||||||||||||||||||||
Title: | Investigation of rechargeable lithium-sulfur batteries by in-situ techniques: Insight into interfacial processes | |||||||||||||||||||||
Authors: |
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Date: | 20 September 2013 | |||||||||||||||||||||
Refereed publication: | No | |||||||||||||||||||||
Open Access: | Yes | |||||||||||||||||||||
Gold Open Access: | No | |||||||||||||||||||||
In SCOPUS: | No | |||||||||||||||||||||
In ISI Web of Science: | No | |||||||||||||||||||||
Status: | Published | |||||||||||||||||||||
Keywords: | Lithium-Schwefelbatterie In-situ XRD | |||||||||||||||||||||
Event Title: | 64th Annual Meeting Int. Society of Electrochemistry | |||||||||||||||||||||
Event Location: | Queretaro, Mexiko | |||||||||||||||||||||
Event Type: | international Conference | |||||||||||||||||||||
Event Dates: | 16.-19. Sept. 2013 | |||||||||||||||||||||
Organizer: | Int. Society of Electrochemistry (ISE) | |||||||||||||||||||||
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: | Wagner, Dr.rer.nat. Norbert | |||||||||||||||||||||
Deposited On: | 23 Oct 2013 10:59 | |||||||||||||||||||||
Last Modified: | 31 Jul 2019 19:42 |
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