Abstract
| Original language | English |
|---|---|
| Journal | Journal of The Electrochemical Society |
| Volume | 164 |
| Issue number | 9 |
| Pages (from-to) | A2017-A2030 |
| ISSN | 0013-4651 |
| DOIs | |
| Publication status | Published - 2017 |
Bibliographical note
This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND)Cite this
}
A Physically-Based Equivalent Circuit Model for the Impedance of a LiFePO4/Graphite 26650 Cylindrical Cell. / Scipioni, Roberto; Jørgensen, Peter Stanley; Graves, Christopher R.; Hjelm, Johan; Jensen, Søren Højgaard.
In: Journal of The Electrochemical Society, Vol. 164, No. 9, 2017, p. A2017-A2030.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - A Physically-Based Equivalent Circuit Model for the Impedance of a LiFePO4/Graphite 26650 Cylindrical Cell
AU - Scipioni, Roberto
AU - Jørgensen, Peter Stanley
AU - Graves, Christopher R.
AU - Hjelm, Johan
AU - Jensen, Søren Højgaard
N1 - This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND)
PY - 2017
Y1 - 2017
N2 - In this work an Equivalent Circuit Model (ECM) is developed and used to model impedance spectra measured on a commercial 26650 LiFePO4/Graphite cylindrical cell. The ECM is based on measurements and modeling of impedance spectra recorded separately on cathode (LiFePO4) and anode (Graphite) samples, harvested from the commercial cell. Modeling of the single-electrode impedance spectra provided information about the electronic and ionic resistance in the porous composite electrodes, as well as the solid state diffusion. Focused Ion Beam (FIB)/Scanning Electron Microscopy (SEM) of anode and cathode samples was used to make 3-D maps of the electrode microstructures and to obtain microstructural data for the ECM. The complementary analysis was crucial for the resolution of the single electrode impedance parameters and the proposal and validation of a new equivalent circuit used to model the full commercial battery impedance.
AB - In this work an Equivalent Circuit Model (ECM) is developed and used to model impedance spectra measured on a commercial 26650 LiFePO4/Graphite cylindrical cell. The ECM is based on measurements and modeling of impedance spectra recorded separately on cathode (LiFePO4) and anode (Graphite) samples, harvested from the commercial cell. Modeling of the single-electrode impedance spectra provided information about the electronic and ionic resistance in the porous composite electrodes, as well as the solid state diffusion. Focused Ion Beam (FIB)/Scanning Electron Microscopy (SEM) of anode and cathode samples was used to make 3-D maps of the electrode microstructures and to obtain microstructural data for the ECM. The complementary analysis was crucial for the resolution of the single electrode impedance parameters and the proposal and validation of a new equivalent circuit used to model the full commercial battery impedance.
U2 - 10.1149/2.1071709jes
DO - 10.1149/2.1071709jes
M3 - Journal article
VL - 164
SP - A2017-A2030
JO - Journal of The Electrochemical Society
JF - Journal of The Electrochemical Society
SN - 0013-4651
IS - 9
ER -