RT Journal Article
T1 Characterisation of commercial Li‐ion batteries using electrochemical impedance spectroscopy
A1 Ezpeleta, Ignacio
A1 Freire, Lorena
A1 Mateo Mateo, Cintia
A1 Nóvoa Rodríguez, Xosé Ramón
A1 Pintos Alonso, Aránzazu
A1 Valverde Perez, Sara
K1 3303.07 Tecnología de la Corrosión
AB Electrochemical impedance spectroscopy (EIS) was used to characterize commercial cylindrical Li-ion cells under differentstate-of-charge (SOC) conditions and up to 300 charge/discharge cycles to monitor state-of-health (SOH) status.The study included the effect of temperature to access better resolution of the time constants related to the redox reactionsat the electrodes. The EIS in the 10 kHz–1 mHz frequency range allowed the elaboration of a comprehensive electrical equivalentthat incorporated the geometry of the cell and the electrochemical processes occurring at the anode and cathodeactive material. The fitting procedure of the experimental EIS data to the equivalent circuit produced parameter values thatcan be used to assess the SOC and SOH of the cell. In the study example, early detection of cell degradation can be obtainedusing the evolution of Li+ diffusion resistance through the solid electrolyte interface (SEI) layer.
PB ChemistrySelect
SN 23656549
YR 2022
FD 2022-03-15
LK http://hdl.handle.net/11093/3254
UL http://hdl.handle.net/11093/3254
LA eng
NO ChemistrySelect, 7(10): e202104464 (2022)
NO Financiado para publicación en acceso aberto: Universidade de Vigo/CISUG
NO Ministerio de Ciencia, Innovación y Universidades | Ref. RTC-2017-6519-4
DS Investigo
RD 11-sep-2024