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Effect of coating operating parameters on electrode physical characteristics and final electrochemical performance of lithium‑ion batteries
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Roman Ramirez, Luis, Apachitei, Geanina, Faraji Niri, Mona, Lain, Michael J., Widanage, Widanalage Dhammika and Marco, James (2022) Effect of coating operating parameters on electrode physical characteristics and final electrochemical performance of lithium‑ion batteries. International Journal of Energy and Environmental Engineering, 13 . pp. 943-953. doi:10.1007/s40095-022-00481-w ISSN 2008-9163.
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WRAP-effect-coating-operating-parameters-electrode-physical-characteristics-final-electrochemical-performance-lithium‑ion-batteries-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1960Kb) | Preview |
Official URL: https://doi.org/10.1007/s40095-022-00481-w
Abstract
The effect of coating parameters of NMC622 cathodes and graphite anodes on their physical structure and half-cell electrochemical performance is evaluated by design of experiments. Coating parameters include the coater comma bar gap, coating ratio and web speed. The electrochemical properties studied are gravimetric and volumetric capacity, rate performance, areal specific impedance (ASI) and C-rate. Differences in the manufacturing effects on the electrode physical structure and electrochemical performance are observed between the electrodes and are modelled by linear regression. The effect of cell coating weight and porosity on half-coin cell electrochemical performance is also evaluated by linear regression. The cathode performance at high gravimetric and volumetric C-rates is mainly influenced by coating weight, whereas porosity is the only explanatory variable for volumetric C-rates of 1C and below. For anode, correlations are only found for the C/20 and 5C gravimetric and volumetric capacities and are related to coating weight. An inverse relationship between ASI and coating weight is observed for cathode, but in general the cell physical characteristics cannot completely explain the observed ASI for both electrodes. The obtained models are useful for the design and robust manufacturing of electrodes since present a quantitative relationship between the coating parameters, cell characteristics and final cell electrochemical performance.
| Item Type: | Journal Article | ||||||||
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| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TS Manufactures |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
| Library of Congress Subject Headings (LCSH): | Lithium ion batteries , Lithium ion batteries -- Materials, Electric batteries -- Electrodes, Coated electrodes | ||||||||
| Journal or Publication Title: | International Journal of Energy and Environmental Engineering | ||||||||
| Publisher: | Springer | ||||||||
| ISSN: | 2008-9163 | ||||||||
| Official Date: | September 2022 | ||||||||
| Dates: |
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| Volume: | 13 | ||||||||
| Page Range: | pp. 943-953 | ||||||||
| DOI: | 10.1007/s40095-022-00481-w | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||
| Date of first compliant deposit: | 11 March 2022 | ||||||||
| Date of first compliant Open Access: | 14 March 2022 | ||||||||
| RIOXX Funder/Project Grant: |
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