Factors responsible for impedance rise in high power lithium ion batteries

By Khalil Amine, Chen Chen, Jun Liu, M. Hammond, A. Jansen, D. Dees, I. Bloom, D. Vissers, G. Henriksen. 2001

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The state of understanding of the lithium-ion-battery graphite solid electrolyte interphase (SEI) and its relationship to formation cycling (2016, background): “8V at 60C.[22, 30-35] Ethers and esters are not typically stable above 4V.”
Characterisation of batteries by electrochemical impedance spectroscopy (2020, result): “These results are similar to those seen with lithium-ion batteries that have a dominant cathode impedance [38]; however, there are also noticeable differences, such as the anode making a more significant contribution to the impedance of the battery in the data shown here.”
Modeling of Lithium-Ion Battery Degradation for Cell Life Assessment (2018, background): “However, although a low SoC does not increase capacity fading rate directly, it increases the impedance and power fading [11], [51], therefore low SoC levels will accelerate cycle aging rates.”
A review on lithium-ion battery ageing mechanisms and estimations for automotive applications (2013, background): “When the temperature is high, secondary reactions such as corrosion are facilitated and the Lithium loss is more important than in moderate temperature conditions, which induces capacity fade [51, 52, 55].”