Electrodes of lithium-ion batteries: some simple method for diagnostics of degradation at cycling

It is shown that an examination of reduced galvanostatic charge-discharge curves allows making preliminary conclusion on degradation mechanism upon cycling. If such degradation is due to loss of active material all normalized curves coincide. In the case of insulating films building up normalized curves are shifted along potential axis. Various structure changes result in qualitative change of curves shape.

Authors:

Kulova Tat'yana L'vovna, Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS, 31, Leninsky Ave, Moscow, 119071, tkulovat@mail.ru

Skundin Aleksandr Mordukhaevich, Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS, 31, Leninsky Ave, Moscow, 119071, askundin@mail.ru

Key words:

литий-ионные аккумуляторы, деградация, нормированные кривые

Literature

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Journal issue:

2011. Т. 11, № 4,

Heading:

Lithium electrochemical systems

DOI:

https://doi.org/10.18500/1608-4039-2011-11-4-171-178

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