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New binders for Lithium-Sulfur-Batteries

Pascucci, Brigitta and Wagner, Norbert and Friedrich, Andreas (2013) New binders for Lithium-Sulfur-Batteries. 2ND INTERNATIONAL CONFERENCE ON MATERIALS FOR ENERGY - ENMAT I I, 13.-16. Mai 2013, Karlsruhe.

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Abstract

New binders for Lithium-Sulfur-Batteries Brigitta Pascucci, Norbert Wagner, K. Andreas Friedrich German Aerospace Center, Institute of Technical Thermodynamics, Stuttgart, Germany A common binder for sulfur-cathodes is PVDF. PVDF requires toxic and/or low-volatile solvents. The drying conditions of such cathodes are either extreme, with loss of active material by sublimation or ambient, which would enhance fabrication cost. Influence of Slurry Composition on Lithium-Sulfur-Battery Performance Only few binder systems have been studied for the application on Li-S batteries. Basically these are PTFE-CMC; PTFE-PVA and PVP [1]; gelatin [2], [3]; Nafion, PANi/CMC and PTFE [4], [5] and SBR/CMC [6]. Due to economically viable application processes, enhanced substrate adhesion, mechanical strength, chemical resistance to battery electrolyte, material and fabrication costs there is a broader variety of suitable binders. For example phenolic-, polyurethane-, epoxy- and silicon-based binders could be studied. To limit the amount of suitable binders, electrochemical stability should be tested first. The electrochemical reduction of polymer chains is often a complicated process with several influencing factors. Not only the thermodynamic behavior of the system is decisive. Kinetic factors, such as the surface of the electrode, the scan rate and the concentration of the solute species influence the outcome. Therefore, in the present work potential binder materials and its electrochemical behaviour are analysed, considering real operation conditions in the electrochemical cell.

Item URL in elib:https://elib.dlr.de/83082/
Document Type:Conference or Workshop Item (Speech)
Title:New binders for Lithium-Sulfur-Batteries
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pascucci, BrigittaBrigitta.Pascucci (at) dlr.deUNSPECIFIED
Wagner, NorbertTTUNSPECIFIED
Friedrich, AndreasTTUNSPECIFIED
Date:16 May 2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Li-Schwefel-Batterie Binder
Event Title:2ND INTERNATIONAL CONFERENCE ON MATERIALS FOR ENERGY - ENMAT I I
Event Location:Karlsruhe
Event Type:international Conference
Event Dates:13.-16. Mai 2013
Organizer:DECHEMA
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: Sievert, Brigitta
Deposited On:23 Jul 2013 16:37
Last Modified:23 Jul 2013 16:37

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