This title appears in the Scientific Report :
2023
Please use the identifier:
http://dx.doi.org/10.1002/batt.202200038 in citations.
Please use the identifier: http://hdl.handle.net/2128/34070 in citations.
Selection of Electrolyte Additive Quantities for Lithium‐Ion Batteries Using Bayesian Optimization
Selection of Electrolyte Additive Quantities for Lithium‐Ion Batteries Using Bayesian Optimization
The composition of the liquid electrolyte is a key factor inlifetime performance of lithium-ion batteries. The selection andquantification of additives to the electrolyte is an active field ofresearch. This study focuses on finding the optimal additivecombination of fluoroethylene carbonate (FEC) an...
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Personal Name(s): | Hildenbrand, Felix (Corresponding author) |
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Aupperle, Felix / Stahl, Gereon / Figgmeier, Egbert / Sauer, Dirk Uwe | |
Contributing Institute: |
Helmholtz-Institut Münster Ionenleiter für Energiespeicher; IEK-12 JARA-ENERGY; JARA-ENERGY |
Published in: | Batteries & supercaps, 5 (2022) 7, S. e202200038 |
Imprint: |
Weinheim
Wiley-VCH
2022
|
DOI: |
10.1002/batt.202200038 |
Document Type: |
Journal Article |
Research Program: |
Batteries in Application |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/34070 in citations.
The composition of the liquid electrolyte is a key factor inlifetime performance of lithium-ion batteries. The selection andquantification of additives to the electrolyte is an active field ofresearch. This study focuses on finding the optimal additivecombination of fluoroethylene carbonate (FEC) and vinylenecarbonate (VC) for NMC622-Graphite cells. The central goal ofthis work is to accelerate the experimental search in a largesearch area by using a Bayesian-optimization algorithm toguide the search. Different measurements are used as targetvariable such as open-circuit voltage gradient and coulombicefficiency. Consequentially, the capability of these measurementsfor accelerated lifetime prediction compared to conventionalageing tests by cycling is investigated. The searchgathered and confirmed additive combinations with excellentperformance after four iterations with a total of 15 additivecombinations analyzed. The results of this study give insightsinto the interaction of VC and FEC with regard to ageing. |