Recently, the National Science and Technology Development Agency (NSTDA) of Thailand published a paper on the ScienceDirect journal, exploring the enhancement of NMC811 battery performance through electrolyte modification. The LiPO2F2 provided by CHEMFISH was found to be crucial for boosting the performance of NMC811-based batteries.

https://www.sciencedirect.com/science/article/abs/pii/S0378775324014228

The paper highlighted the significance of lithium-ion batteries (LIBs) in energy storage and the demand for higher energy density and longer cycle life. Despite its high capacity and operating voltage, NMC811 suffers from capacity loss and poor cycle and thermal stability. The study focused on enhancing NMC811-based battery systems through electrolyte modification, particularly the synergistic effects of mixed additive combinations.

Key findings include the ternary additive system of vinylene carbonate (VC), LiPO2F2, and para-toluenesulfonyl isocyanate (PTSI) in LiPF6-based electrolytes, which significantly reduced capacity decay in batteries cycled at 25°C and 45°C. The additives work by forming a stable protective CEI film, reducing cracks in NMC cathodes and enhancing structural integrity. PTSI also suppresses the thermal decomposition of LiPF6-based electrolytes, especially at high temperatures. Experimental results showed that after 150 cycles at 45°C, the capacity retention of graphite/NMC811 pouch cells improved from 82.4% to 90.2%.

The paper also delved into the mechanisms of various additives, explaining how VC, LiPO2F2, and PTSI collaborate to form stable SEI and CEI films, reduce electrolyte decomposition and gas generation, and thereby enhance thermal stability and cycle life. Techniques like SEM, XRD, and XPS were used to analyze how these additives boost battery performance and structural integrity.

In summary, the study offers valuable insights into improving LIBs with high nickel content through strategic electrolyte modification, particularly in high-temperature environments, advancing the development of more robust and reliable energy storage solutions.

As an early domestic supplier of LiPO2F2, CHEMFISH has been steadily supplying LiPO2F2 (CAS:24389-25-1) since 2018, which has shown significant benefits for battery performance enhancement.