"The capacity and performance of the battery diminish with each excessively fast charge

Rapid charging is a challenge because lithium atoms migrate into the carbon crystals of the electrode during charging. When discharging, they are retrieved from there. “The faster the battery is charged, the greater the risk that the charge carriers will stick to the surface of the crystals, forming a metallic layer and thus damaging the cell,” explains Sauer. So capacity and power diminish with each rapid charge. In extreme cases a short circuit can occur. "

The above quote comes from an article titled:  

Porsche Engineers Confirm Lithium-Ion Best Batteries Today-Solid-State & New Electrodes Good for Future

In addition to a discussion about the pros and cons of fast charging Lithium Ion batteries, the article reviews why, in the opinion of Porshe Engineers, Lithium Ion Batteries are good for today and for the future.  It capsulizes a number of important concepts in a short article.  

https://www.autoconnectedcar.com/2020/08/porsche-engineers-confirm-lithium-ion-best-batteries-today-solid-state-new-electrodes-good-for-future/