Shateri, NedaAuger, Daniel J.Fotouhi, AbbasBrighton, JamesDu, WenjiaOwen, Rhodri E.Brett, Dan J. L.Shearing, Paul R.2022-04-062022-04-062022-04-01Shateri N, Auger D, Fotouhi A, et al., (2022) Investigation of the effect of temperature on lithium-sulfur cell cycle life performance using system identification and x-ray tomography, Batteries and Supercaps, Volume 5, Issue 8, August 2022, Article number e2022000352566-6223https://doi.org/10.1002/batt.202200035https://dspace.lib.cranfield.ac.uk/handle/1826/17747In this study, cycle life performance of a prototype lithium-sulfur (Li−S) pouch cell is investigated using system identification and X-ray tomography methods. Li−S cells are subjected to characterization and ageing tests while kept inside a controlled-temperature chamber. After completing the experimental tests, two analytical approaches are used: i) The parameter variations of an equivalent-circuit model due to ageing are determined using a system identification technique. ii) Physical changes of the aged Li−S cells are analyzed using X-ray tomography. The results demonstrate that Li−S cell's degradation is significantly affected by temperature. Comparing to 10 °C, Li−S cell capacity fade happens 1.4 times faster at 20 °C whereas this number increases to 3.3 at 30 °C. In addition, X-ray results show a significant swelling when temperature rises from 10 to 20 °C, correspondingly the gas volume increases from 13 to 62 mm3.enAttribution 4.0 Internationalegradation modellingelectrochemistryenergy conversionlithium-sulfur batterytemperature3D gas thicknessX-ray tomographyArticle