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Development of Low Melting Temperature Molten Halogen Salt Electrolytes for Na-Based Liquid Metal Batteries with Low Operating Temperatures below 400°C

Ding, Wenjin and Gong, Qing and Bauer, Thomas (2021) Development of Low Melting Temperature Molten Halogen Salt Electrolytes for Na-Based Liquid Metal Batteries with Low Operating Temperatures below 400°C. Minisymposium Liquid Metal Batteries @ WCCM ECCOMAS 2020 (held in 2021.01 due to COVID), Jan. 2021, Virtual (Paris, France).

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Abstract

Molten halogen salts are promising electrolytes for LMBs due to their high stability, superior conductivity and low prices. This work aims to develop molten halogen salts as low temperature and sodium solubility electrolytes for sodium-based LMBs. The molten halogen salt electrolytes are screened and selected by regarding the properties (such as melting temperature, Na solubility related to self-discharge rate, Na+ ionic conductivity) and the material cost. In this work, current research progress on selection of the best molten salt electrolytes for low-cost low-temperature (<450°C) Na-based LMBs will be presented. Based on thermodynamic calculations of the phase diagrams, melting point measurements (via Differential Scanning Calorimetry (DSC) [5] and OptiMelt) and Na solubility measurements, the most promising molten halogen salt electrolytes are selected. Moreover, the test results of these selected molten halogen salt electrolytes in the Na-based LMB test cell will be presented.

Item URL in elib:https://elib.dlr.de/147674/
Document Type:Conference or Workshop Item (Speech)
Additional Information:This research has been performed within the DFG-NSFC Sino-German project (DFG Project Mumber 411450529): ‘Study on Corrosion Control and Low-Temperature Electrolytes for Low-Cost Na-based Liquid Metal Batteries’, which is funded by Deutsche Forschungsgemeinschaft (DFG) and National Natural Science Foundation of China (NSFC).
Title:Development of Low Melting Temperature Molten Halogen Salt Electrolytes for Na-Based Liquid Metal Batteries with Low Operating Temperatures below 400°C
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Ding, WenjinWenjin.Ding (at) dlr.deUNSPECIFIED
Gong, QingQing.Gong (at) dlr.deUNSPECIFIED
Bauer, ThomasThomas.Bauer (at) dlr.deUNSPECIFIED
Date:January 2021
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Molten salt battery, molten salt electrolyte, grid storage
Event Title:Minisymposium Liquid Metal Batteries @ WCCM ECCOMAS 2020 (held in 2021.01 due to COVID)
Event Location:Virtual (Paris, France)
Event Type:international Conference
Event Dates:Jan. 2021
Organizer:ECCOMAS
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:23 Dec 2021 10:32
Last Modified:23 Dec 2021 10:32

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