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On the Improvement of High Capacity Lithium-Sulfur Batteries and the Understanding of Degradation

Friedrich, K. Andreas and Cañas, Natalia A. and Freitag, Thomas Oliver and Wagner, Norbert (2015) On the Improvement of High Capacity Lithium-Sulfur Batteries and the Understanding of Degradation. MRS 2015, 6.-10. Apr. 2015, San Fransisco, USA.

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Abstract

Lithium sulfur (Li-S) cells are promising batteries both for automotive and stationary applications. 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 (S) and other materials. However, degradation of the cathode, electrolyte decomposition, self-discharge and low sulfur fraction in the cathode are major problems for the technical realization of this novel battery. In addition, effective manufacturing with high output is required. Regarding the cycling stability several parallel reactions and phase changes which occur during cycling, as well as the different solubility of sulfur and its polysulfide reaction intermediates, negatively affect the cycling stability of the cell. However, significant progress in the last five years has been reported recently, especially with regard to continuous improvement on the cycling stability1,2. In this contribution we will discuss shortly the status of the development in general, present the in-situ and ex-situ techniques that have been already developed to get a deeper understanding on reaction mechanisms and degradation processes1-5. 1. A. Manthiram, Y.-Z. Fu, S.-H. Chung, C. Zu, and Y.-S. Su, Chemical Reviews, 2014, 114, 11751-11787. 2. M.-K. Song, E. J. Cairns, and Y. Zhang, Nanoscale, 2013, 5, 2186–204. 3.N. A. Cañas, K. Hirose, B. Pascucci, N. Wagner, K. A. Friedrich, and R. Hiesgen, Electrochim. Acta, 2013, 97, 42–51. 4. N. A. Cañas, S. Wolf, N. Wagner, and K. A. Friedrich, J. Power Sources, 2013, 226, 313–319. 5. N. A. Cañas, D. N. Fronczek, N. Wagner, A. Latz, and K. A. Friedrich, J. Phys. Chem. C, 2014, 118, 12106–12114.

Item URL in elib:https://elib.dlr.de/100909/
Document Type:Conference or Workshop Item (Speech)
Title:On the Improvement of High Capacity Lithium-Sulfur Batteries and the Understanding of Degradation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Cañas, Natalia A.natalia.canas (at) dlr.deUNSPECIFIED
Freitag, Thomas OliverThomas.Freitag (at) dlr.deUNSPECIFIED
Wagner, Norbertnorbert.wagner (at) dlr.deUNSPECIFIED
Date:7 April 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Li-S Batteries, degradation, spectroscopic mehtods
Event Title:MRS 2015
Event Location:San Fransisco, USA
Event Type:international Conference
Event Dates:6.-10. Apr. 2015
Organizer:MRS
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: Friedrich, Prof.Dr. Kaspar Andreas
Deposited On:14 Dec 2015 08:49
Last Modified:14 Dec 2015 08:49

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