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Electrical and Structural Characterization of Large‐Format Lithium Iron Phosphate Cells Used in Home‐Storage Systems

  • This article presents a comparative experimental study of the electrical, structural and chemical properties of large‐format, 180 Ah prismatic lithium iron phosphate (LFP)/graphite lithium‐ion battery cells from two different manufacturers. These cells are particularly used in the field of stationary energy storage such as home‐storage systems. The investigations include (1) cell‐to‐cellThis article presents a comparative experimental study of the electrical, structural and chemical properties of large‐format, 180 Ah prismatic lithium iron phosphate (LFP)/graphite lithium‐ion battery cells from two different manufacturers. These cells are particularly used in the field of stationary energy storage such as home‐storage systems. The investigations include (1) cell‐to‐cell performance assessment, for which a total of 28 cells was tested from each manufacturer, (2) electrical charge/discharge characteristics at different currents and ambient temperatures, (3) internal cell geometries, components, and weight analysis after cell opening, (4) microstructural analysis of the electrodes via light microscopy and scanning electron microscopy, (5) chemical analysis of the electrode materials using energy‐dispersive X‐ray spectroscopy, and (6) mathematical analysis of the electrode balances. The combined results give a detailed and comparative insight into the cell characteristics, providing essential information needed for system integration. The study also provides complete and self‐consistent parameter sets for the use in cells models needed for performance prediction or state diagnosis.show moreshow less

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Metadaten
Author:Mehmet C. YagciORCiD, René Behmann, Viktor Daubert, Jonas A. Braun, Dirk VeltenGND, Wolfgang G. BesslerORCiDGND
Publisher:Wiley Online Library
Year of Publication:2021
Page Number:14
Language:English
Parent Title (English):Energy Technology
Volume:Early View
ISSN:2194-4296 (Online)
ISSN:2194-4288 (Print)
First Page:2000911
Document Type:Article (reviewed)
Open Access:Frei zugänglich
Institutes:Bibliografie
Release Date:2021/04/12
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International
URL:https://onlinelibrary.wiley.com/doi/10.1002/ente.202000911
DOI:https://doi.org/10.1002/ente.202000911