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Prelithiation is an essential technology to compensate for the initial lithium loss of lithium‐ion batteries due to the formation of solid electrolyte interphase (SEI) and irreversible structure change. However, the prelithiated materials/electrodes become more reactive with air and electrolyte resulting in unwanted side reactions and contaminations, which makes it difficult for the practical application...
Solid electrolyte interphase (SEI) plays an important role in regulating the interfacial ion transfer and safety of Lithium‐ion batteries (LIBs). It is unstable and readily decomposed releasing much heat and gases and thus triggering thermal runaway. Herein, in situ heating X‐ray photoelectron spectroscopy is applied to uncover the inherent thermal decomposition process of the SEI. The evolution of...
The update of electrolytes from a liquid state to a solid state is considered effective in improving the safety and energy density of lithium‐ion batteries (LIBs). Although numerous efforts have been made, solid‐state electrolytes’ (SSEs) insufficient charge transfer capability remains a significant obstruction to practical applications. Herein, a fireproof and anion‐immobilized composite electrolyte...
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