Please use this identifier to cite or link to this item:
|Title:||Effect of overcharge on entropy and enthalpy of lithium-ion batteries||Authors:||Maher, Kenza
|Issue Date:||2012||Source:||Maher, K., & Yazami, R. (2013). Effect of overcharge on entropy and enthalpy of lithium-ion batteries. Electrochimica Acta, 101, 71-78.||Series/Report no.:||Electrochimica acta||Abstract:||We have investigated the evolution of the thermodynamics behaviour and of the crystal structure of electrodes materials of lithium-ion batteries based on graphite anode and lithium cobalt oxide (LCO) cathode after applying high voltage charging between 4.2 V and 4.9 V cut-off voltages (COV). We found the entropy and enthalpy profiles vary dramatically with the applied COV. These changes correlate well with the anode and the cathode crystal structure degradation as evidenced by post-mortem X-ray diffractometry and Raman scattering spectrometry. Our finding is thermodynamics measurements can be used as a new and non-destructive investigation tool to characterize the degradation level of electrode materials and consequently assess the cell's state of health (SOH).||URI:||https://hdl.handle.net/10356/106088
|ISSN:||0013-4686||DOI:||10.1016/j.electacta.2012.11.057||Rights:||© 2012 Elsevier Ltd.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||ERI@N Journal Articles|
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.