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Study Shows Anode Degradation Caused by Evolution of Solid Electrolyte Interphase Shells Written by AZoMApr 5 2021 The electrochemical performance of lithium (Li) batteries is mainly governed by the interfacial decomposition products that form what is called the solid-electrolyte interphase (SEI) at the time of the first charging or discharging. The SEI shells evolution processes and degradation mechanism at the electrode/electrolyte interface. Image Credit: ©Science China Press. Until now, chemical compositions, dynamic evolutions, stabilities, and the impacting factors of the SEI films have gained considerable attention. Related Stories Contrary to the formation of SEI film at the surface of electrodes, it has been observed that a type of SEI shells generally develops conformally at the outmost layer of the on-site deposited Li as the newly deposited Li gets in touch with the electrolyte. This could have a direct impact on growth behaviors, Li nucleation and electrochemical

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