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Unraveling capacity fading in lithium-ion batteries using advanced cyclic tests: A real-world approach

  • Battery lifespan estimation is essential for effective battery management systems, aiding users and manufacturers in strategic planning. However, accurately estimating battery capacity is complex, owing to diverse capacity fading phenomena tied to factors such as temperature, charge-discharge rate, and rest period duration. In this work, we present an innovative approach that integrates real-world driving behaviors into cyclic testing. Unlike conventional methods that lack rest periods and involve fixed charge-discharge rates, our approach involves 1000 unique test cycles tailored to specific objectives and applications, capturing the nuanced effects of temperature, charge-discharge rate, and rest duration on capacity fading. This yields comprehensive insights into cell-level battery degradation, unveiling growth patterns of the solid electrolyte interface (SEI) layer and lithium plating, influenced by cyclic test parameters. The results yield critical empirical relations for evaluating capacity fading under specific testing conditions.

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Document Type:Article
Author:Sai Krishna Mulpuri, Bikash Sah, Praveen Kumar
Parent Title (English):iScience
Article Number:107770
Number of pages:20
Publisher:Cell Press
Publishing Institution:Hochschule Bonn-Rhein-Sieg
Date of first publication:2023/08/29
Copyright:© 2023 The Author(s). This is an open access article under the CC BY-NC-ND license.
Funding:This work is supported by the Ministry of Education (MoE), Government of India through the Prime Ministers’ Research Fellowship (PMRF) Scheme and E-Mobility Lab, Indian Institute of Technology, Guwahati, Assam, India.
Keyword:Applied sciences; Energy Modeling
Departments, institutes and facilities:Fachbereich Ingenieurwissenschaften und Kommunikation
Institut für Technik, Ressourcenschonung und Energieeffizienz (TREE)
Dewey Decimal Classification (DDC):6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 621.3 Elektrotechnik, Elektronik
Entry in this database:2023/10/24
Licence (German):License LogoCreative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International