X-Ray Computed Tomography for Failure Mechanism Characterisation within Layered Pouch Cells: Part I : Lithium-ion battery safety. Issue 1 (3rd January 2023)

• Record Type: Journal Article
• Authors: Patel, Drasti; Reid, Hamish; Ball, Sarah; Brett, Dan J. L.; Shearing, Paul R.
• Is Part Of: Johnson Matthey technology review. Volume 67:Issue 1(2023:Jan.)
• Page Start: 36
• Page End: 46
• Publication Date: 2023-01-03
• Subjects: Technology -- Periodicals; Chemical engineering -- Periodicals; Metallurgy -- Periodicals; Materials -- Periodicals; Research, Industrial -- Periodicals; Periodicals; 605
• DOI: 10.1595/205651322X16595441894422
• Languages: English
• ISSNs: 2056-5135

Abstract

The assessment of lithium-ion battery (LIB) safety is a multiscale challenge: from the whole-cell architecture to its composite internal three-dimensional (3D) microstructures. Substantial research is required to standardise failure assessments and optimise cell designs to reduce the risks of LIB failure. In this two-part work, the failure response of a 1 Ah layered pouch cell with a commercially available nickel manganese cobalt (NMC) cathode and graphite anode at 100% state of charge (SOC) (4.2 V) is investigated. The mechanisms of two abuse methods: mechanical (by nail penetration) and thermal (by accelerating rate calorimetry) are compared by using a suite of post-mortem analysis methods.