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Development of molten chloride salt electrolytes in Na-ZnCl2 batteries for large-scale energy storage

Kumar, Sumit (2021) Development of molten chloride salt electrolytes in Na-ZnCl2 batteries for large-scale energy storage. Master's, University of Stuttgart.

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Abstract

This thesis aims to develop an efficient molten salt electrolyte mixture for Na-Zn liquid metal batteries to increase the life span, performance, and safety of the battery. Two types of batteries are studied. First is solid electrolyte battery, which is similar to the ZEBRA battery with beta alumina membrane and AlCl3-ZnCl2-NaCl as a salt mixture and second is the all-liquid battery, which has a diaphragm in the middle and liquid salt mixture CaCl2-ZnCl2-NaCl. The selected salt mixtures will be studied with the help of thermodynamic simulation software and the promising low melting point mixtures are selected. Moreover, the melting point will be measured by Differential Scanning Calorimetry(DSC) and OptiMelt, the mixtures will be tested for ionic conductivity with the help of Electrochemical Impedance Spectroscopy(EIS) and finally, the unit storage cost(USD/kWh) calculation will be done based on the simulation and experimental results to find the optimum salt mixture.

Item URL in elib:https://elib.dlr.de/147607/
Document Type:Thesis (Master's)
Additional Information:Supervised by Prof. Dr. Oliver Clemens (University of Stuttgart) Dr.-Ing. Wenjin Ding (DLR)
Title:Development of molten chloride salt electrolytes in Na-ZnCl2 batteries for large-scale energy storage
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kumar, SumitSumit.Kumar (at) dlr.deUNSPECIFIED
Date:December 2021
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:87
Status:Published
Keywords:Grid storage, High temperature battery, Molten salt battery, molten salt electrolyte
Institution:University of Stuttgart
Department:Department of Chemistry
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:High-Temperature Thermal Technologies
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Thermochemical Processes
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Thermal Process Technology
Deposited By: Ding, Wenjin
Deposited On:21 Dec 2021 09:55
Last Modified:21 Dec 2021 09:55

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