| Autor: |
Ragna Elger, Mårten Behm, Tommy Georgios Zavalis, Andreas Nyman, Göran Lindbergh |
| Rok vydání: |
2009 |
| Předmět: |
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| Zdroj: |
ECS Meeting Abstracts. :678-678 |
| ISSN: |
2151-2043 |
| DOI: |
10.1149/ma2009-02/8/678 |
| Popis: |
The internal sources of polarization are calculated and investigated for a graphite (MAG-10) vertical bar 1.2 M LiPF6 in EC: EMC (3: 7 by weight) vertical bar LiNi0.8Co0.15Al0.05O2 battery cell at SOC 40 and 80. A method is developed where the total polarization of the battery cell is split up into six polarizing subprocesses. The method involves two steps; the solving of an experimentally validated model that describes the dynamics of the battery cell during e. g. a hybrid pulse power characterization test and the use of the modeled cell's local potential, concentration profiles and local current density to calculate the internal losses. With this analysis the sources of polarization during an EUCAR test cycle are determined. The major factor limiting the performance is associated with the mass transport in the electrolyte. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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