Published May 27, 2025
| Version 1.0.0
Dataset
Open
INR18650-LG-3500-MJ1 Anode GITT OCV Model Fit
Authors/Creators
- 1. Helmholtz Institute Ulm
- 2. German Aerospace Center
- 3. SINTEF Energy Research
- 4. SINTEF Industry
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].
Files
18650-LG-3500-MJ1-Anode GITT_dch ohne EIS(2320)_extraction_fit_plot.pdf
Files
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Additional details
Funding
- Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
- Helmholtz Association of German Research Centres
- KW-BASF-6
- European Union
- 10110399
- European Union
- 875527