NINGBO INNO PHARMCHEM CO.,LTD. is dedicated to advancing the field of sodium-ion batteries (SIBs) through innovative material science. A key area of focus is enhancing the performance of SIBs, particularly under challenging high-temperature operating conditions. While individual electrolyte additives can offer significant benefits, the exploration of synergistic effects between multiple additives presents an even greater potential for optimizing battery performance and longevity.

The high-temperature operation of SIBs is often hampered by accelerated electrolyte decomposition and the degradation of protective interfacial layers, such as the SEI (Solid Electrolyte Interphase). This leads to increased internal resistance, capacity fading, and a shortened battery lifespan. Electrolyte additives are crucial for mitigating these issues by forming more stable and resilient interfacial layers. Research has shown that certain additives, like Prop-1-ene-1,3-sultone (PES), can effectively passivate the anode surface and suppress electrolyte decomposition at elevated temperatures.

However, the performance of a single additive might be limited in addressing all the complex degradation mechanisms occurring at high temperatures. This is where the concept of synergistic additive combinations comes into play. By judiciously combining different types of additives, it may be possible to achieve a more comprehensive protection strategy. For instance, one additive might excel at forming a stable SEI, while another could help stabilize the cathode-electrolyte interface (CEI) or scavenge reactive species. The combined action of these additives can lead to a multiplicative effect on overall battery stability and sodium ion battery stability improvement.

The study of electrolyte systems like NaBOB in TEP, for example, has shown that while TEP offers inherent safety advantages, the addition of PES can significantly boost its high-temperature performance and cycle life. This suggests a synergistic interaction where PES enhances the stability of the TEP-based electrolyte and its interfaces. Exploring further combinations of additives tailored for specific electrolyte systems and battery chemistries is a critical path forward for achieving optimal sodium-ion battery performance.

NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing high-quality chemicals that enable such advanced formulations. For manufacturers and researchers seeking to push the performance envelope of SIBs, investigating the buy/purchase of carefully selected additive packages or exploring custom blending options can unlock new levels of performance, especially for high-temperature applications. The synergistic approach to electrolyte additive optimization is key to realizing the full potential of sodium-ion battery technology.