Evaluation of Commercial Lithium-Ion Cells Based on Composite Positive Electrode for Plug-In Hybrid Electric Vehicle (PHEV) Applications
| Autor: | Cyril Truchot, David K. Jamison, Matthieu Dubarry, Kevin L. Gering, Bor Yann Liaw, Arnaud Devie, Sergiy V. Sazhin, Christopher Michelbacher |
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| Rok vydání: | 2015 |
| Předmět: |
Battery (electricity)
Materials science Renewable Energy Sustainability and the Environment business.industry Powertrain Composite number Electrical engineering chemistry.chemical_element Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Electrode Materials Chemistry Electrochemistry Lithium Graphite Fade Composite material business Voltage |
| Zdroj: | Journal of The Electrochemical Society. 162:A1787-A1792 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/2.0481509jes |
| Popis: | Lithium-ion cells with composite positive electrodes are attractive and promising for EV and PHEV applications. For powertrain applications, the battery packs are required to have multiple-cell configurations, where some battery management is needed to protect cells from experiencing overcharging and overdischarging. Here, we show how to analyze the effect of slight overdischarge in a graphite || {LixMn1/3Ni1/3Co1/3O2 + LixMn2O4} cell, when it was overdischarged to 2.0 V. We found a peculiar behavior at low voltages that is imputable to the composite nature of the positive electrode. Under certain circumstances, due to differences in kinetic limitations in each of the constituents in the composite electrode, although LixMn1/3Ni1/3Co1/3O2 were discharged normally, LixMn2O4 could be overdischarged to Li2Mn2O4 and cause capacity fade. |
| Databáze: | OpenAIRE |
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