Understanding the effect of coating-drying operating variables on electrode physical and electrochemical properties of lithium-ion batteries

Journal article


Roman Ramirez, L., Apachitei, G., Faraji-Niri, M., Lain, M., Widanage, W.D. and Marco, J. (2021). Understanding the effect of coating-drying operating variables on electrode physical and electrochemical properties of lithium-ion batteries. Journal of Power Sources. 516, p. 230689. https://doi.org/10.1016/j.jpowsour.2021.230689
AuthorsRoman Ramirez, L., Apachitei, G., Faraji-Niri, M., Lain, M., Widanage, W.D. and Marco, J.
Abstract

The effect of coating and drying process variables (comma bar gap, web speed, coating ratio, drying temperature and drying air speed) on NMC622 cathode physical properties (thickness, mass loading and porosity) and electrochemical properties (gravimetric capacity, volumetric capacity and rate performance) is studied by a design of experiments approach. Electrochemical performance is assessed on half coin cells at C-rates from C/20 up to 10C. The statistical analysis of the data reveals that the cathode physical properties are mainly affected by comma bar gap and coating ratio. The electrochemical properties also show high correlations between comma bar gap and coating ratio for some C-rates. As a second evaluation, the relationship between the cathode half-cell physical characteristics with the electrochemical performance is studied through multiple linear regression analysis. A correlation mainly between coating weight and the electrochemical properties is found. Empirical linear models representing the relationship between the output and input variables are provided, showing correlation coefficients (
) as high as 0.99.

Year2021
JournalJournal of Power Sources
Journal citation516, p. 230689
PublisherElsevier
ISSN1873-2755
Digital Object Identifier (DOI)https://doi.org/10.1016/j.jpowsour.2021.230689
Web address (URL)https://www.sciencedirect.com/science/article/abs/pii/S0378775321011848?via%3Dihub
Publication dates
Print30 Oct 2021
Publication process dates
Accepted23 Oct 2021
Deposited21 Mar 2024
Accepted author manuscript
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File Access Level
Open
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