Comprehensive parameter set and electrochemical data for a 1 Ah graphite/LNMO battery cell for physical modelling

Scope: This repository contains a dataset for a 1 Ah graphite-LNMO prototype pouch cell developed and manufactured in the EU project HYDRA. The dataset includes electrochemical measurements at both electrode and full cell level, SEM images of the electrode cross-sections and the corresponding metadata for the measurements as well as standardized parameter sets for modelling. More specifically, the electrochemical data includes quasi-OCV (qOCV) measurements in charge and discharge direction on full cell- and electrode-level rate capability tests at various C-rates on full cell- and electrode-level Electrochemical Impedance Spectroscopy (EIS) measurements at various SOC on full cell-level and for the negative electrode Galvanostatic Intermittent Titration Technique (GITT) measurements of the electrodes A linked JSON-LD parameter set obtained from experimental measurements is also provided together with a validated parameter set for a P2D cell model. The parameter set is available in BATMO and PyBaMM supported formats. Further details on parameter determination and model calibration can be found in a pre-print of the corresponding scientific publication at https://doi.org/10.48550/arXiv.2601.10507 and in the corresponding GitHub repository (BattMoTeam/schmitt-2026-lnmo-graphite-hydra-publication: Repository for the paper "Comprehensive parameter set and electrochemical data for a 1 Ah graphite/LNMO battery cell for physical modelling"). Contact Information: For inquiries or further assistance, please contact Dennis Kopljar at [email protected] Cell Information: Property Value Type Prototype pouch cell Manufacturer Custom (CEA) Norminal capacity (Ah) 1 Ah Chemistry Graphite-LNMO Image of the pouch cell (jpg) hydra0_graphite_lnmo_1ah_photo .jpg 1) Full-Cell Data This part contains electrochemical measurements collected at full cell level for the 1 Ah graphite-LNMO prototype pouch cell. The data comprises quasi-open-circuit voltage (qOCV) measurements, rate capability tests and electrochemical impedance spectroscopy (EIS) data. quasi-Open-Circuit Voltage (qOCV) Technical Metadata Property Value Mode constant current - charging/discharging C-Rate 1/50 Voltage window 3.5 V - 4.9 V Temperature / °C 25 Tabular Data Dataset Description Format hydra0__graphite_lnmo_1ah__qocv.bdf.csv Full cell quasi-OCV measurement (C/50) of 1Ah LNMO-Graphite pouch cell csv Rate-test Technical Metadata Property Value Discharge rates 0.05C, 0.2C, 0.5C, 1C, 2C Charge protocol CC–CV Charge CC rate 0.3C CV voltage 4.9 V CV cutoff C/20 (0.05C) Temperature 25 °C Tabular Data Dataset Description Format hydra0_graphite_lnmo_1ah_rate.bdf.csv Full cell rate test of 1Ah LNMO-Graphite pouch cell csv Electrochemical Impedance Spectroscopy (EIS) Note: The SOC of the measurements can be inferred from the file naming convention that follows the format: hydra0-graphite-lnmo-1ah-{measurement}-soc{####}-{state}.csv Technical Metadata Property Value Frequency range 0.005 Hz – 100 kHz Excitation current C/50 SOC levels 0.025-1.00 Temperature 25 °C Tabular Data Filename SoC Format hydra0-graphite-lnmo-1ah-eis-soc0.025-discharge.csv 0.025 csv hydra0-graphite-lnmo-1ah-eis-soc0.05-discharge.csv 0.05 csv hydra0-graphite-lnmo-1ah-eis-soc0.10-discharge.csv 0.10 csv hydra0-graphite-lnmo-1ah-eis-soc0.15-discharge.csv 0.15 csv hydra0-graphite-lnmo-1ah-eis-soc0.20-discharge.csv 0.20 csv hydra0-graphite-lnmo-1ah-eis-soc0.25-discharge.csv 0.25 csv hydra0-graphite-lnmo-1ah-eis-soc0.30-discharge.csv 0.30 csv hydra0-graphite-lnmo-1ah-eis-soc0.35-discharge.csv 0.35 csv hydra0-graphite-lnmo-1ah-eis-soc0.40-discharge.csv 0.40 csv hydra0-graphite-lnmo-1ah-eis-soc0.45-discharge.csv 0.45 csv hydra0-graphite-lnmo-1ah-eis-soc0.50-discharge.csv 0.50 csv hydra0-graphite-lnmo-1ah-eis-soc0.55-discharge.csv 0.55 csv hydra0-graphite-lnmo-1ah-eis-soc0.60-discharge.csv 0.60 csv hydra0-graphite-lnmo-1ah-eis-soc0.65-discharge.csv 0.65 csv hydra0-graphite-lnmo-1ah-eis-soc0.70-discharge.csv 0.70 csv hydra0-graphite-lnmo-1ah-eis-soc0.75-discharge.csv 0.75 csv hydra0-graphite-lnmo-1ah-eis-soc0.80-discharge.csv 0.80 csv hydra0-graphite-lnmo-1ah-eis-soc0.85-discharge.csv 0.85 csv hydra0-graphite-lnmo-1ah-eis-soc0.90-discharge.csv 0.90 csv hydra0-graphite-lnmo-1ah-eis-soc0.95-discharge.csv 0.95 csv hydra0-graphite-lnmo-1ah-eis-soc0.97-discharge.csv 0.97 csv hydra0-graphite-lnmo-1ah-eis-soc1.00-discharge.csv 1.00 csv Graphical Visualization Filename Description Format hydra0-graphite-lnmo-1ah-eis-plot.png Plot of impedance spectra as a function of SOC for graphite-LNMO 1 Ah prototype pouch cell png 2) Electrode-Level Data This section contains the half-cell data collected for the electrode-level characterization of the 1 Ah graphite-LNMO prototype pouch cell. All measurements were carried out in half-cell configuration against lithium metal as counter electrode and a lithium metal ring serving as the reference electrode in ECC-PAT-Core-Cells from El-Cell. More details can be found in the corresponding publication (see above). Note: to avoid misinterpretation when working with half-cell data, we refer to the full cell discharge as negative electrode delithiation and positive electrode lithiation. Charging in the full cell corresponds to negative electrode lithiation and positive electrode delithiation. a) Negative Electrode This section provides electrode-level data from the graphite electrode including electrochemical measurements from GITT, EIS, quasi-open-circuit voltage (qOCV) and rate capability tests together with SEM images. quasi-Open-Circuit Voltage (qOCV) Technical Metadata Property Value C-Rate 1/50 Voltage window 0.01 V - 1.5 V Temperature / °C 25 Tabular Data Dataset Description Format hydra0__lithium_graphite__qocv.bdf.csv Quasi-OCP measurement (C/50) of graphite electrode in 3-electrode configuration csv Rate Test Technical Metadata Property Value Discharge (delithiation) rates 0.1C, 0.2C, 0.5C, 1C, 2C, 5C Charge (lithiation) protocol CC–CV Charge CC rate 0.3C Voltage window 0.01 V - 1.5 V CV cutoff C/20 (0.05C) Temperature 25 °C Tabular Data Dataset Description Format hydra0_lithium_graphite_rate.bdf.csv Electrode-level rate performance test of graphite electrode csv Galvanostatic Intermittent Titration Technique (GITT) Technical Metadata Property Value Mode GITT measurements in 3-electrode configuration Sequence C/10 pulses with duration of 2.5 min (corresponding to 240 points) followed by a relaxation phase until either ∆U < 0.5 mV/s for 30 min or t > 6 h Voltage window 0.01 V - 1.5 V Temperature / °C 25 Tabular Data Dataset Description Format hydra0_lithium_graphite_gitt.bdf.csv GITT measurements of graphite electrode in 3-electrode configuration csv Electrochemical Impedance Spectroscopy (EIS) Note: The state of charge (SOC) is defined according to charging in the full cell direction, i.e. fully lithiated graphite corresponds to SOC100. The SOC of the measurements can be inferred from the file naming convention that follows the format: hydra0-lithium-graphite-{measurement}-soc{####}-{state}.csv Technical Metadata Property Value Frequency range 0.01 Hz – 1 MHz Mode Galvanostatic Excitation current C/50 Temperature 25 °C Tabular data Filename SOC Format hydra0-lithium-graphite-eis-soc0.00-discharge.csv 0.00 csv hydra0-lithium-graphite-eis-soc0.025-discharge.csv 0.025 csv hydra0-lithium-graphite-eis-soc0.05-discharge.csv 0.05 csv hydra0-lithium-graphite-eis-soc0.10-discharge.csv 0.10 csv hydra0-lithium-graphite-eis-soc0.15-discharge.csv 0.15 csv hydra0-lithium-graphite-eis-soc0.20-discharge.csv 0.20 csv hydra0-lithium-graphite-eis-soc0.25-discharge.csv 0.25 csv hydra0-lithium-graphite-eis-soc0.30-discharge.csv 0.30 csv hydra0-lithium-graphite-eis-soc0.35-discharge.csv 0.35 csv hydra0-lithium-graphite-eis-soc0.40-discharge.csv 0.40 csv hydra0-lithium-graphite-eis-soc0.45-discharge.csv 0.45 csv hydra0-lithium-graphite-eis-soc0.50-discharge.csv 0.50 csv hydra0-lithium-graphite-eis-soc0.55-discharge.csv 0.55 csv hydra0-lithium-graphite-eis-soc0.60-discharge.csv 0.60 csv hydra0-lithium-graphite-eis-soc0.65-discharge.csv 0.65 csv hydra0-lithium-graphite-eis-soc0.70-discharge.csv 0.70 csv hydra0-lithium-graphite-eis-soc0.75-discharge.csv 0.75 csv hydra0-lithium-graphite-eis-soc0.80-discharge.csv 0.80 csv hydra0-lithium-graphite-eis-soc0.85-discharge.csv 0.85 csv hydra0-lithium-graphite-eis-soc0.90-discharge.csv 0.90 csv hydra0-lithium-graphite-eis-soc0.95-discharge.csv 0.95 csv hydra0-lithium-graphite-eis-soc0.975-discharge.csv 0.97 csv hydra0-lithium-graphite-eis-soc1.00-discharge.csv 1.00 csv Graphical Visualization Filename Description Format hydra0-lithium-graphite-eis-plot.png Plot of impedance spectra as a function of SOC for graphite electrode png SEM Image