2185
(Invited) A Data Science Approach for Quantitative Analysis of Total Differential Capacity Plots

Monday, 1 October 2018: 10:30
Star 8 (Sunrise Center)
N. L. Thompson, S. Alamdari, T. A. Cohen, R. Masse, G. Cao, V. C. Holmberg, J. Pfaendtner, and D. A. C. Beck (University of Washington)
In order to characterize battery performance, electrodes are typically cycled for weeks or months at a time, resulting in an extremely large dataset of charge-discharge curves, a subset of which are often analyzed individually in the form of total differential capacity plots. Due to the difficulty in analyzing these datasets in their entirety, qualitative interpretations based on a subset of cycling data prevail in the literature. Here, we present software that quantitatively analyzes cycling datasets in their entirety by extracting peak characteristics from every cycle through a pseudo-Voight distribution fit. Initial results demonstrate that our system can differentiate between cycling data for two different battery chemistries, and we have implemented a database backend, allowing users to perform analyses and return to their data at a later point. We hope that this will lay the framework for an open source database, fostering collaboration and advancement within the electrochemistry community.