Pre-sodiation Technology for Interface Engineering in Sodium-ion Batteries: Progress, Challenges, and Future...

Area of Science:

• Materials Science
• Electrochemistry
• Energy Storage

Background:

• Sodium-ion batteries (SIBs) face challenges with active sodium loss during charging and cycling.
• Pre-sodiation is a key strategy to mitigate these losses and improve battery performance.
• Existing reviews lack a systematic analysis of pre-sodiation's impact on battery interfacial layers.

Purpose of the Study:

• To comprehensively review the role of pre-sodiation in engineering interfacial layers within SIBs.
• To focus on the effects of pre-sodiation on the solid electrolyte interface (SEI) and cathode electrolyte interface (CEI).
• To identify future research directions for optimizing pre-sodiation technology.

Main Methods:

• Systematic review of recent advances in pre-sodiation techniques for SIBs.
• Analysis of mechanisms by which pre-sodiation modulates SEI and CEI composition and structure.
• Evaluation of pre-sodiation's effectiveness in suppressing detrimental side reactions.

Main Results:

• Pre-sodiation significantly enhances the electrochemical performance of SIBs by compensating for sodium loss.
• It effectively engineers the SEI and CEI, improving their chemical composition and structural organization.
• Pre-sodiation demonstrates a capacity to suppress harmful side reactions at the interfaces.

Conclusions:

• Pre-sodiation is a crucial technology for advancing SIBs.
• Understanding its impact on interfacial layers is vital for future development.
• Further research into pre-sodiation can accelerate the commercialization of high-performance SIBs.