Journal
ELECTROCHIMICA ACTA
Volume 114, Issue -, Pages 750-757Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2013.10.101
Keywords
Lithium-ion battery; Power cycling; Capacity recovery; Calendar aging
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In this work, the performance recovery phenomenon when aging high-power lithium-ion batteries used in HEV application is highlighted. This phenomenon consists in the increase on the battery capacity when power-cycling is stopped. The dependency of this phenomenon on the stop-SOC value is demonstrated. Keeping battery at a fully discharged state preserves a large amount of charge from the SEI-electrolyte interaction when they are in the positive electrode during rest time. Results from power cycling and combined aging, calendar/power-cycling, of a 12 A h-commercialized lithium-ion battery, at two temperatures (45 degrees C and 55 degrees C), are presented and obtained results are discussed. (C) 2013 Elsevier Ltd. All rights reserved.
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