Communication—Identifying and Managing Reversible Capacity Losses that Falsify Cycle Ageing Tests of Lithium-Ion Cells

We report on a cycle ageing study of commercial NCA/Gr+Si cells, in which reversible capacity fluctuations turn a central experimental finding upside down: an upper voltage limit of 4.1 V seems to cause faster degradation than going all the way to 4.2 V. The underlying effect is the reversible loss...

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Veröffentlicht in:	Journal of the Electrochemical Society 2020-10, Vol.167 (13), p.130544
Hauptverfasser:	Burrell, Robert, Zulke, Alana, Keil, Peter, Hoster, Harry
Format:	Artikel
Sprache:	eng
Schlagworte:	Anode Overhang Batteries Li-ion Charging Voltage Cycle Ageing Passive Electrode Effect Reversible Capacity Fade
Online-Zugang:	Volltext
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