Evaluation of commercial lithium-ion cells based on composite positive electrode for plug-in hybrid electric vehicle applications. Part II. Degradation mechanism under 2C cycle aging
| Autor: | Matthieu Dubarry, Cyril Truchot, Kevin L. Gering, Sergiy V. Sazhin, David K. Jamison, Bor Yann Liaw, Christopher Michelbacher |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment business.industry Kinetics Composite number Electrical engineering Energy Engineering and Power Technology chemistry.chemical_element Ion chemistry Chemical engineering Electrode Degradation (geology) Lithium Electrical and Electronic Engineering Physical and Theoretical Chemistry Fade business Capacity loss |
| Zdroj: | Journal of Power Sources. 196:10336-10343 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2011.08.078 |
| Popis: | Degradation phenomena and inference of their underlying mechanisms during 2 C cycle aging in a cell design comprising {LiMn1/3Ni1/3Co1/3O2 + LiMn2O4} composite positive electrode are studied and reported in this work. We describe how aging phenomena in the cells were studied and incremental capacity analysis applied to infer cell degradation mechanisms in the cycle aging process. Two stages of degradation were observed in the life cycle under this aging regime. In the first stage, we conclude that loss of lithium inventory was the cause of capacity fade. As a result of such parasitic loss, the cell further suffered from loss of active materials in the second stage, in which the positive electrode kinetics was hampered and the capacity loss accelerated. |
| Databáze: | OpenAIRE |
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