Cañas, Natalia A. and Pascucci, Brigitta and Wagner, Norbert and Friedrich, K. Andreas (2014) On the understanding and improvement of high capacity lithium/sulfur (Li/S) batteries. 14th Ulm Electrochemical Talks (UECT), 2014-03-24 - 2014-03-25, Ulm, Germany.
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Abstract
Li/S batteries present many advantages including a high theoretical capacity (1675 Ah∙kg−1), high energy density (2500 Wh∙kg−1), and low cost of sulfur. However, degradation of the battery components at high cycle number and high discharge rates is still a problem. In this work, the investigations are focused on the understanding of the critical issues associated with the electrochemical and degradation processes occurring in Li-S batteries. For this, different characterization techniques and experimental procedures were studied: X-ray diffraction for detection and quantification of crystalline products Li2S and S8 [1], electrochemical impedance spectroscopy for analysis of electrolyte resistance, charge transfer resistance in the electrodes, and reaction and dissolution of Li2S and S8 [2], UV-Vis spectroscopy for detection and quantification of dissolved species (mainly polysulfides) [3], as well as thermal analysis (TG/DSC) and mass spectroscopy to study the degradation of components and morphological changes on the cathode. The development of components and fabrication processes applicable at large-scale production and at low cost is also a great challenge for the commercialization of Li/S batteries. Here, we present developments related with the fabrication of industrially-oriented cathodes and the main factors affecting the battery capacity. Moreover, a new approach is investigated for the retention of active material in the bulk of the cathode.
Item URL in elib: | https://elib.dlr.de/89621/ | ||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Poster) | ||||||||||||||||||||
Title: | On the understanding and improvement of high capacity lithium/sulfur (Li/S) batteries | ||||||||||||||||||||
Authors: |
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Date: | 24 June 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 batteres | ||||||||||||||||||||
Event Title: | 14th Ulm Electrochemical Talks (UECT) | ||||||||||||||||||||
Event Location: | Ulm, Germany | ||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||
Event Start Date: | 24 March 2014 | ||||||||||||||||||||
Event End Date: | 25 March 2014 | ||||||||||||||||||||
Organizer: | ZSW | ||||||||||||||||||||
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: | 14 Jul 2014 15:43 | ||||||||||||||||||||
Last Modified: | 24 Apr 2024 19:55 |
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