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Lithium ion Battery Formation Process

Mar 21 , 2022

After battery manufactured, through a certain charge and discharge way to activate its internal anode and cathode materials, improve the battery's charge and discharge performance and self-discharge, storage and other comprehensive performance,this process is called formation.

lithium ion battery formation process is a very complex process, and it is also an important process that affects battery performance, because when Li+ is first charged, Li+ is inserted into graphite for the first time, electrochemical reaction occurs in the battery. In the first charging process, a thin passive layer covering the surface of the carbon electrode is inevitably formed on the phase INTERFACE between the carbon negative electrode and the electrolyte, which is called SEI film (SOLID ELECTROLYTE INTERFACE).

Formation principle

Formation principle

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