Fast formation of anode-free Li-metal batteries by pulsed current
Creators
- 1. Helmholtz Institute Ulm & Institute of Physical Chemistry, Applied Electrochemistry Group, Lise-Meitner Str. 16, 89081 Ulm Germany
- 2. National Institute of Chemistry, Department of Materials Chemistry, Hajdrihova ulica 19, 1000 Ljubljana, Slovenia
- 3. Helmholtz Institute Ulm & Institute of Physical Chemistry, Applied Electrochemistry Group, Lise-Meitner Str. 16, 89081 Ulm Germany, Technical University of Munich, School of Natural Sciences, Department of Chemistry, Lichtenbergstr. 4, 85748 Garching bei München, Germany
Description
This work investigates the electroplating of metallic Li onto a Cu foil current collector under constant-current and pulsed current formation protocols. In addition to smoother, less resistive electroplated metallic Li deposits and increased Coulombic efficiency, we show that by employing an optimized pulsed current formation protocol, the formation process is accelerated by a factor of 2 compared to a C/20 protocol. Finally, by employing a simple regression coupled to experimentation, we propose the pseudo-IR-drop to be used for live adjustment of pulsed current protocols i.e., individually approach each cell at all SOC during formation.
The raw data and analysis codes support publication Fast formation of anode-free Li-metal batteries by pulsed current.
The csv files contain raw data after formation with formation condition in description, accompanied by Jupyter notebook with data analysis for each cell. The Electrochemical impedance image was generated by EIS Jupyter notebook, and XGBoost regression performed in XGBoost Jupyter files.
Files
2023-01-19_Katarina_pulsed_05-1s_formation_C3D5_Cell106_Channel_52_Wb_1.CSV
Files
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