Cycle and calendar life study of a graphite|LiNi1/3Mn1/3Co1/3O2 Li-ion high energy system. Part A: Full cell characterization

This work provides an aging study of a graphite|LiNi1/3Mn1/3Co1/3O2 (NMC) Li-ion pouch cell with a nominal capacity of 10 Ah. By means of resistance and capacity measurements the cell's behavior is tracked over time under consideration of temperature and cell voltage impact. Tests duration was...

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Bibliographic Details
Published in:Journal of power sources 2013-10, Vol.239, p.572-583
Main Authors: Käbitz, Stefan, Gerschler, Jochen Bernhard, Ecker, Madeleine, Yurdagel, Yusuf, Emmermacher, Brita, André, Dave, Mitsch, Tim, Sauer, Dirk Uwe
Format: Article
Language:English
Subjects:
Aging
Calendar life
Calendars
Cycle life
Cycles
Diagnostic systems
Electric batteries
Electric potential
Lifetime prediction
Lithium-ion
Mathematical models
Nickel cobalt manganese
Testing time
Voltage
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Summary:This work provides an aging study of a graphite|LiNi1/3Mn1/3Co1/3O2 (NMC) Li-ion pouch cell with a nominal capacity of 10 Ah. By means of resistance and capacity measurements the cell's behavior is tracked over time under consideration of temperature and cell voltage impact. Tests duration was up to 15 months effective testing time. Observed effects and possible aging mechanisms are discussed considering the results from capacity and resistance measurements. The test results are used for a calendar lifetime prediction. In addition to a detailed calendar life study, also cycle life tests are discussed briefly to point out additional aging effects based on cycling. The paper may also serve as data source on aging for further work on battery lifetime modeling and battery diagnostics. Selected cells were taken from the aging tests and were used for a detailed post-mortem analysis (see paper “Part B: Post-Mortem Analysis”). •Extended accelerated aging tests on lithium-ion batteries including storage and cycling.•Detailed analysis of temperature and voltage dependencies of cell aging.•Correlation of aging results to post-mortem analysis.•Lifetime prediction based on identified main aging phenomena.•Alternating aging test under varying SOC.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2013.03.045