Sodium-ion batteries (SIBs) are emerging as a promising alternative to lithium-ion batteries, thanks to the abundance of sodium resources and their potential for cost-effective, large-scale energy storage. However, the commercialization of SIBs is hindered by challenges such as poor cycle stability and significant capacity fade, primarily due to the weak solid electrolyte interphase (SEI) and interfacial degradation. A recent study published in Nano-Micro Letters by Professor Ji-Sang Yu and Professor Hyun-seung Kim from the Korea Electronics Technology Institute (KETI) and Kangwon National University, South Korea, has demonstrated a transformative approach to mitigate these issues by incorporating lithium salt (LiPF 6 ) into the electrolyte.
Why Lithium Salt Matters
Innovative Design and Mechanisms
Results and Discussion
Future Outlook
Conclusion: This study demonstrates a transformative approach to enhancing the performance and stability of sodium-ion batteries by incorporating lithium salt into the electrolyte. The formation of a robust SEI layer and the stabilization of the O3-type cathode surface significantly improve cycleability and capacity retention. This work paves the way for the development of high-performance, cost-effective sodium-ion batteries, contributing to a more sustainable energy future.
Stay tuned for more groundbreaking advancements from Professor Ji-Sang Yu and Professor Hyun-seung Kim as they continue to push the boundaries of sodium-ion battery technology!
Nano-Micro Letters
Experimental study
Transformative Effect of Li Salt for Proactively Mitigating Interfacial Side Reactions in Sodium‑Ion Batteries
21-Apr-2025