Study of graphite/NCA Li-ion cell degradation during accelerated aging tests &amp;#x2014; Data analysis of the SIMSTOCK project

Weiping Liu,Serge Pelissier,Christophe Forgez,Charles Delacourt

doi:10.1109/vppc.2011.6043110

Study of graphite/NCA Li-ion cell degradation during accelerated aging tests &#x2014; Data analysis of the SIMSTOCK project

Weiping Liu, Serge Pelissier + Show 2 more

https://doi.org/10.1109/vppc.2011.6043110

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Publication Date: Sep 1, 2011

Citations: 26

Affiliation: Laboratoire de Réactivité et Chimie des Solides, University of Picardie Jules Verne, French National Centre for Scientific Research, University of Technology of Compiègne

#Influence Of Aging Factors #Accelerated Aging Tests + Show 8 more

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Abstract

This paper presents a preliminary analysis of aging data from the French SIMSTOCK program in order to evaluate the influence of several aging factors on capacity fade and impedance increase of graphite/NCA Li-ion batteries over accelerated aging tests. Test protocols (cycling and check-up) are presented, and the behavior of battery under aging is described. An equivalent-circuit model is used to extract the various contributions of the impedance spectra. Finally, the influence of the aging factors on capacity fade and impedance increase is discussed.

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