Investigation of Temperature and Pressure Behaviour of Constrained Lithium Ion Cell under Lithium Plating Conditions

authored by: L. Hovestadt, K. Wildermann, A. Sahhary, Richard Hanke-Rauschenbach
Abstract: Fast charging lithium ion cells with too high currents can cause lithium deposition at the negative electrode. To prevent this a method to determine the onset of lithium deposition based on locally resolved pressure and temperature measurements in a constrained test setup, for a given automotive lithium ion pouch cell is presented. The basic effect for pressure detection is volume increase caused by lithium deposition. For temperature measurement, the endothermic reaction behaviour of lithium deposition is exploited. An experimental study has been carried out to understand the fundamental cyclic pressure and temperature behaviour of the given cell. Additionally cell behaviour under so called lithium plating conditions is presented. Thereby inhomogeneous performance under lithium plating condition has been observed at the boundary areas. Based on experimental results an optimized fast charge protocol was developed and tested by cycling cells up to 100 cycles which shows a similar capacity retention in comparison to cycling tests with low charging current.
Organisation(s): Section Electrical Energy Storage Systems
External Organisation(s): Dr. Ing. h. c. F. Porsche AG
Type: Article
Journal: Journal of the Electrochemical Society
Volume: 167
ISSN: 0013-4651
Publication date: 21.07.2020
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Electronic, Optical and Magnetic Materials, Renewable Energy, Sustainability and the Environment, Surfaces, Coatings and Films, Electrochemistry, Materials Chemistry
Sustainable Development Goals: SDG 7 - Affordable and Clean Energy
Electronic version(s): https://doi.org/10.1149/1945-7111/aba550 (Access: Closed)