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Important Aspects on the Fabrication and Characterization of Lithium-Sulfur

Canas, Natalia and Wagner, Norbert and Friedrich, K. Andreas (2014) Important Aspects on the Fabrication and Characterization of Lithium-Sulfur. 65th Annual Meeting of the International Society of Electrochemistry, 31. Aug. -5. Sept. 2014, Lausanne, Schweiz.

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Abstract

The lithium sulfur (Li-S) battery is a promising system for the future generation of rechargeable batteries. The main advantages of this type of cell are the high theoretical capacity (1675 Ah∙kg−1), high energy density (2500 Wh∙kg−1) and low cost of sulfur. However, degradation of the cathode is difficult to alleviate because of the complex electrochemistry of the Li-S system. In these work, simple approaches on the battery fabrication and it influences on the stability of the cell are presented. Furthermore, these investigations aim to understand the critical issues associated with the electrochemical processes occurring in Li-S batteries, establishing methods and procedures necessary to investigate this system. The result obtained through the use of the following characterization techniques are compared and analyzed: (a) X-ray diffraction for detection and quantification of crystalline products Li2S and S8 [1], (b) electrochemical impedance spectroscopy for analysis of electrolyte resistance, charge transfer resistance in the electrodes, and reaction and dissolution Li2S and S8 [2], (c) UV-Vis spectroscopy for detection and quantification of dissolved species (mainly polysulfides) [3], (d) Atomic force microscopy for surface analysis and formation of isolating layers, (e) Thermal analysis (TG/DSC) and mass spectroscopy to study the degradation of components and morphological changes on the cathode.

Item URL in elib:https://elib.dlr.de/90595/
Document Type:Conference or Workshop Item (Speech)
Title:Important Aspects on the Fabrication and Characterization of Lithium-Sulfur
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Canas, Natalianatalia.canas (at) dlr.deUNSPECIFIED
Wagner, Norbertnorbert.wagner (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Date:4 September 2014
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Lithium sulfur, batteries, Characterization, EIS, X-ray diffraction
Event Title:65th Annual Meeting of the International Society of Electrochemistry
Event Location:Lausanne, Schweiz
Event Type:international Conference
Event Dates:31. Aug. -5. Sept. 2014
Organizer: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 - Electrochemical Processes (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Cañas, Natalia Andrea
Deposited On:17 Dec 2014 17:37
Last Modified:31 Jul 2019 19:47

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