DOI: 10.5281/zenodo.15527995
title: INR18650-LG-3500-MJ1 Anode GITT OCV Model Fit

description: Scope

This record contains an open-circuit voltage (OCV) model fitted to OCV curves from GITT measurements during discharging and charging. The GITT measurements were obtained from negative electrode (anode) harvested from an INR18650-MJ1 Li-ion battery cell manufactured by LG CHEM. The active material in the electrode is composite graphite/silicon oxide. The measurment is obtained in three-electrode configuration with the working electrode composite graphite/silicon oxide, counter electrode NMC, and reference electrode lithium metal in a coin cell casing.

Files

Data




Filename
Description
Format
Usage




18650-LG-3500-MJ1-Anode GITT_dch ohne EIS(2320)_extraction_with_negative_soc.json
JSON file with extracted GITT discharge data including negative SOC adjustments (ID: 2320).
JSON (application/json)
Used for refined analysis of discharge data with SOC adjustments.


18650-LG-3500-MJ1-Anode GITT_ch ohne EIS(2340)_extraction_with_negative_soc.json
JSON file with GITT charge data including negative SOC adjustments (ID: 2340).
JSON (application/json)
Used for detailed GITT charge data analysis with SOC adjustments.


18650_LG_3500_MJ1_EIS_anode_charge_soc_alignment.json
JSON file containing SOC alignment data for EIS measurements on the MJ1 anode.
JSON (application/json)
Used for aligning SOC data during EIS analysis.




Plots




Filename
Description
Format
Usage




18650-LG-3500-MJ1-Anode GITT_dch ohne EIS(2320)_extraction_fit_plot.pdf
PDF containing plots of the OCV fitting results from GITT discharge data (ID: 2320).
PDF (application/pdf)
Visual representation of OCV fitting results.


18650-LG-3500-MJ1-Anode GITT_ch ohne EIS(2340)_extraction_fit_plot.pdf
PDF containing plots of the OCV fitting results from GITT charge data (ID: 2340).
PDF (application/pdf)
Provides a visual summary of OCV fitting results.




Logs




Filename
Description
Format
Usage




18650-LG-3500-MJ1-Anode GITT_dch ohne EIS(2320)_extraction_fit_log.json
JSON file containing log details of the OCV fitting process for GITT discharge data (ID: 2320).
JSON (application/json)
Used to trace and validate the fitting process.


18650-LG-3500-MJ1-Anode GITT_ch ohne EIS(2340)_extraction_fit_log.json
JSON file containing logs from OCV fitting on GITT charge data (ID: 2340).
JSON (application/json)
Supports validation and traceability of OCV fitting processes.




Scripts




Filename
Description
Format
Usage




18650_LG_3500_MJ1_EIS_anode_charge_soc_alignment.py
Python script to compute SOC alignment for EIS measurements on the MJ1 anode.
Python script (text/x-python)
Automates SOC alignment during data preprocessing.




Related Resources




Relationship
Record
Description


isPartOf
INR18650-LG-3500-MJ1 Anode
This collection points to all the intermediate steps including and between the data obtained on the harvested anode of the MJ1 cylindrical 18650 cell from LG CHEM and its analysis.


Continues
INR18650-LG-3500-MJ1 Anode GITT OCV
This record contains open-circuit voltage (OCV) data extracted from a GITT measurement on the harvested anode of the MJ1 cylindrical 18650 cell from LG CHEM. The active material of the harvested electrode is composite graphite/silicon oxide. The measurment is obtained in three-electrode configuration with the working electrode composite graphite/silicon oxide, counter electrode NMC, and reference electrode lithium metal in a coin cell casing. The data is intended to support the generation of parameterized OCV curves for use in battery cell modelling.


Continues
INR18650-LG-3500-MJ1 Anode GITT OCV Modelling
This record contains workflows that fit an OCV model to OCV curves from GITT measurements during discharging and charging.


IsContinuedBy
INR18650-LG-3500-MJ1 Anode GITT Overpotential Extraction
This record contains workflows that extracts the cell overpotential from GITT measurements during discharging and charging.


IsContinuedBy
18650-LG-3500-MJ1 Anode GITT Featurization
This record contains workflows to extract feactures from the GITT (without intermittent EIS) measurement on the harvested negative electrode (anode) of the INR18650-MJ1 Li-ion battery cell from LG CHEM. It simulteaneously sets up the simulator and EP-BOLFI optimizer inputs for later parameterization.


IsContinuedBy
18650-LG-3500-MJ1 Anode GITT Features
This record contains features observed in the GITT (without intermittent EIS) measurement on the harvested negative electrode (anode) of the INR18650-MJ1 cylindrical 18650 cell from LG CHEM. It also serves as input for EP-BOLFI parameterization.


IsContinuedBy
INR18650-LG-3500-MJ1 Lithium-Ion Battery Cell Complete Continuum Simulation Parameters
This record contains a complete and PyBaMM-compatible parameter set for the INR18650-LG-3500-MJ1 cell and incomplete versions of it that were used in an exempular GITT characterization workflow. Most parameters are repackaged laboratory measurement results and SOC alignment checks with a GITT (without intermittent EIS) measurement on the harvested electrodes.




Metadata

Machine Readable RDF




Filename
Description
Format
Usage




Human Readable Tables

Working Electrode




Property
Value




Type
Harvested from INR18650-MJ1


Active Material 1
Graphite


Active Material 1 Volume Fraction / 1
0.965


Active Material 2
Silicon Oxide


Active Material 2 Volume Fraction / 1
0.035


Active Material Composite Lithium Saturation Concentration / mol L-1
29.254


Electrode Thickness / µm
87




Counter Electrode




Property
Value




Type
Harvested from INR18650-MJ1


Active Material
NCM-831205


Active Material Molecular Formula
LiNi0.83Co0.12Mn0.05O2


Electrode Thickness / µm
73




Reference Electrode




Property
Value




Type
Lithium Metal


Active Material
Lithium




Separator




Property
Value




Type
Whatman GF/A


Manufacturer
El-cell


Thickness / µm
260


Porosity
0.93




Electrolyte




Property
Value




Type
1M LiPF6 in EC:EMC:DMC 1:1:1


Salt
LiPF6


Salt Concentration / mol L-1
1


Solvent 1
Ethylene Carbonate


Solvent 2
Ethyl Methyl Carbonate


Solvent 3
Dimethyl Carbonate




Cell




Property
Value




Format
Coin Cell


Dimensions
R2032


Nominal Capacity / mAh
12




Licensing

This dataset is licensed under CC-BY 4.0, allowing for sharing and adaptation with proper attribution.

Contact Information

For questions or further assistance, please contact Dennis Kopljar at dennis.kopljar@dlr.de.

References

This dataset is linked to the following publication: [DOI/Link to publication].