Ante-mortem analysis, electrical, thermal, and ageing testing of state-of-the-art cylindrical lithium-ion cells

• DOI: 10.1007/s00502-020-00814-9
• Publication Date: 2020-06-16T14:03:42Z
• Authors: Hartmut Popp; Ningxin Zhang; Marcus Jahn; Mikel Arrinda; Simon Ritz; Matthias Faber; Dirk Uwe Sauer; Philippe Azais; Iosu Cendoya
• Keywords: Benchmark (surveying); Power density

Abstract Thanks to its exceptional performance in terms of high energy and power density as well long lifespan, the lithium-ion secondary battery is most relevant electrochemical storage technology meet requirements for partial or full electrification vehicles (plug-in hybrids pure electric vehicles), thanks decreasing cost ongoing technical improvements, it will maintain this role near mid-term future. This study benchmarks eight different (five 21700 three 18650 format) high-energy cylindrical cells concerning their suitability automotive applications aims give a holistic overview comparison between them. Therefore, an ante-mortem material analysis, benchmark electrical thermal values cycle life were carried out. The results show that even when applying similar concepts like Nickel-rich cathodes with graphite-based anodes, wide variations under same test conditions.