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Charbonnel J, Dubourg S, Testard E, Broche L, Magnier C, Rochard T, Marteau D, Thivel PX, Vincent R. Preliminary study of all-solid-state batteries: Evaluation of blast formation during the thermal runaway. iScience 2023; 26:108078. [PMID: 37876824 PMCID: PMC10590810 DOI: 10.1016/j.isci.2023.108078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/05/2023] [Accepted: 09/25/2023] [Indexed: 10/26/2023] Open
Abstract
All-solid-state batteries have been developed to increase energy density by replacing the lithiated graphite negative electrode by a lithium metal foil and to increase safety by removing the organic compounds. However, the safety issues of these batteries have received little attention up to now. The behavior of a reassembled all-solid-state battery under thermal stress was recorded by X-ray radiography and a high-speed camera. The thermal runaway (TR) lasted about 5 ms, thus extremely fast reaction kinetics. In comparison, the TR of a lithium-ion battery is about 500 ms. Furthermore, a 188-mbar aerial overpressure was measured using a piezoelectric sensor. Although this cell is not an explosive, 2.7 g TNT equivalent was calculated for it. This atypical behavior could have an impact on the casing or the battery pack. Therefore, it must be studied in greater detail.
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Affiliation(s)
- Juliette Charbonnel
- University Grenoble Alpes, CEA, LITEN, DEHT, 38000 Grenoble, France
- University Grenoble Alpes, University Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France
| | | | | | - Ludovic Broche
- European Synchrotron Radiation Facility (ESRF), 38000 Grenoble, France
| | | | | | | | - Pierre-Xavier Thivel
- University Grenoble Alpes, University Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France
| | - Rémi Vincent
- University Grenoble Alpes, CEA, LITEN, DEHT, 38000 Grenoble, France
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