Communication—Why High-Precision Coulometry and Lithium Plating Studies on Commercial Lithium-Ion Cells Require Thermal Baths
| Autor: | Harry E. Hoster, Peter Keil, Alana Aragon Zulke, Yi Li |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Computer cooling Renewable Energy Sustainability and the Environment 020209 energy Analytical chemistry chemistry.chemical_element 02 engineering and technology Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Ion Coulometry chemistry Plating Thermal 0202 electrical engineering electronic engineering information engineering Materials Chemistry Electrochemistry Lithium Elektrotechnik |
| Zdroj: | Journal of The Electrochemical Society. 166:A2921-A2923 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/2.0841913jes |
| Popis: | We demonstrate how insufficient heat transport in environmental chambers compromises the meaningfulness of high-precision charge counting and leads to an underestimation of lithium plating in fast-charged lithium-ion batteries. Direct-contact liquid cooling of cylindrical cells excludes temperature fluctuations observed in thermal chambers and restricts self-heating to 2 K in comparison to the 14 K in thermal chambers, under 1.5 C-rate cycling. Our thermal-electrochemical model replicated well the experimental results. For high-precision coulometric studies to be meaningful and more comparable across different laboratories, especially for large-format and high-power cells, direct-contact cooling in thermal baths must become the new standard. |
| Databáze: | OpenAIRE |
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