Operando Dilatometry and GEIS Data for Symmetric Li|LLZO|Li, Na|NZSP|Na, and K|KBA|K Cells

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DOI:
https://doi.org/10.22029/jlupub-21088

Abstract

This dataset contains time-aligned operando dilatometry and galvanostatic electrochemical impedance spectroscopy (GEIS) data for symmetric Li|LLZO|Li, Na|NZSP|Na, and K|KBA|K cells measured at current densities of 100 and 200 µA cm⁻² under an applied stack pressure of 0.07 MPa. It contains six experiments, corresponding to one measurement for each combination of cell chemistry and current density. Each experiment is represented by standardized, unfiltered dilatometer data and GEIS data with unchanged numerical measurement values and sanitized metadata headers. The Li|LLZO|Li data are identical to the experimental data previously reported by Schall et al. in Small 2025, 21, 2505053, DOI: 10.1002/smll.202505053. No additional lithium measurements were performed for the subsequent comparative study. The original lithium data were converted to the standardized file format used in this dataset and analyzed together with the sodium and potassium data. The sodium and potassium data were obtained for the associated comparative study "The Evolution of Pore Volume during Stripping of Lithium, Sodium, and Potassium Metal Electrodes in olid-State Batteries" published in *ACS Electrochemistry*, DOI: https://doi.org/10.1021/acselectrochem.6c00237.Detailed information on the files, data columns, instruments, and processing steps is provided in the accompanying README.md.

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