.png){kind=icon}
.png){kind=icon}
Return
Precisely deciphering solid electrolyte interphase
.png){kind=icon}
PRE
AI
DOI：10.1016/j.matt.2025.102368.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Advanced alkali metal (such as Na, Li, and K) battery systems, which play a very important role in the large-scale energy storage field, have put forward high demands for long lifespan. To ensure stable operation, a passivation film called the solid electrolyte interphase (SEI) is very critical, and it acts as the bridge between the electrolyte and the electrode, becoming the rate-determining step to determine the overall alkali metal ion delivery. Besides, a series of battery deterioration and safety problems, such as continuous electrolyte consumption, increased battery polarization, and drastic thermal eruption, are supposed to be initiated by SEI failure. However, due to the complex, versatile, and fragile nature of SEI, people’s understanding of SEI remains rather limited. Considering its critical role, this review provides a comprehensive overview of the SEI, including the fundamental mechanisms, the emerging detection techniques, and the recent cognitive advances. Additionally, it also puts forward the challenges and perspectives of SEI study in the future.