DOI: 10.5281/zenodo.15537413
title: INR18650-LG-3500-MJ1 Cathode 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 positive electrode (cathode) harvested from an INR18650-MJ1 Li-ion battery cell manufactured by LG CHEM. The active material in the electrode is NMC. The measurment is obtained in three-electrode configuration with the working electrode NMC, counter electrode composite graphite/silicon oxide, and reference electrode lithium metal in a coin cell casing.

Files

Data




Filename
Description
Format
Usage




18650-LG-3500-MJ1-Cathode GITT_dch ohne EIS(2321)_extraction_with_positive_soc.json
JSON file with extracted GITT discharge data including positive SOC adjustments (ID: 2321).
JSON (application/json)
Used for refined analysis of discharge data with SOC adjustments.


18650-LG-3500-MJ1-Cathode GITT_ch ohne EIS(2327)_extraction_with_positive_soc.json
JSON file with GITT charge data including positive SOC adjustments (ID: 2327).
JSON (application/json)
Used for detailed GITT charge data analysis with SOC adjustments.


18650_LG_3500_MJ1_EIS_cathode_charge_soc_alignment.json
JSON file containing SOC alignment data for EIS measurements on the MJ1 catjode.
JSON (application/json)
Used for aligning SOC data during EIS analysis.




Plots




Filename
Description
Format
Usage




18650-LG-3500-MJ1-Cathode GITT_dch ohne EIS(2321)_extraction_fit_plot.pdf
PDF containing plots of the OCV fitting results from GITT discharge data (ID: 2321).
PDF (application/pdf)
Visual representation of OCV fitting results.


18650-LG-3500-MJ1-Cathode GITT_ch ohne EIS(2327)_extraction_fit_plot.pdf
PDF containing plots of the OCV fitting results from GITT charge data (ID: 2327).
PDF (application/pdf)
Provides a visual summary of OCV fitting results.




Logs




Filename
Description
Format
Usage




18650-LG-3500-MJ1-Cathode GITT_dch ohne EIS(2321)_extraction_fit_log.json
JSON file containing log details of the OCV fitting process for GITT discharge data (ID: 2321).
JSON (application/json)
Used to trace and validate the fitting process.


18650-LG-3500-MJ1-Cathode GITT_ch ohne EIS(2327)_extraction_fit_log.json
JSON file containing logs from OCV fitting on GITT charge data (ID: 2327).
JSON (application/json)
Supports validation and traceability of OCV fitting processes.




Scripts




Filename
Description
Format
Usage




18650_LG_3500_MJ1_EIS_cathode_charge_soc_alignment.py
Python script to compute SOC alignment for EIS measurements on the MJ1 cathode.
Python script (text/x-python)
Automates SOC alignment during data preprocessing.




RDF Metadata




Filename
Description
Format
Usage




metadata.jsonld
RDF metadata describing the data table schema, test, and battery
application/json+ld
Semantic Web integration


metadata.html
RDF metadata describing the data table schema, test, and battery
application/json+ld
Semantic Web integration




Human Readable Tables

Working Electrode




Property
Value




Type
Harvested from INR18650-MJ1


Active Material
NCM-831205


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


Electrode Thickness / µm
73




Counter 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




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




Related Resources




Relationship
Record
Description




isPartOf
INR18650-LG-3500-MJ1 Cathode Characterization Data
All data obtained on the harvested cathode of the MJ1 cylindrical 18650 cell from LG CHEM


Continues
INR18650-LG-3500-MJ1 Cathode GITT OCV
This record contains open-circuit voltage (OCV) data extracted from a GITT measurement on the harvested cathode of the MJ1 cylindrical 18650 cell from LG CHEM. The active material of the harvested electrode is NMC. The measurment is obtained in three-electrode configuration with the working electrode NMC, counter electrode composite graphite/silicon oxide, 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 Cathode 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 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.


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


IsContinuedBy
INR18650-LG-3500-MJ1 Cathode 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
INR18650-LG-3500-MJ1 Cathode 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.




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].