Lithium Bis(fluorosulfonyl)imide (LiFSI), identified by CAS number 171611-11-3, is a critical chemical compound with a unique set of properties that make it highly valuable in modern industrial and scientific applications. NINGBO INNO PHARMCHEM CO.,LTD. is a leading supplier of this high-purity chemical, offering it for various uses, most notably in advanced energy storage and complex chemical synthesis. Understanding the fundamental characteristics of LiFSI is key to appreciating its significance.

Chemically, LiFSI is an inorganic salt that dissociates into lithium cations (Li+) and bis(fluorosulfonyl)azanide anions [(FSO2)2N-]. Its molecular formula is F2LiNO4S2, and it typically appears as a white crystalline solid. A significant advantage of LiFSI is its high thermal stability, remaining undecomposed at temperatures below 200°C. It also exhibits excellent low-temperature performance and good hydrolytic stability, properties that are crucial for its application in electrolytes for lithium-ion batteries. Unlike some other lithium salts, LiFSI offers good solubility in water and various organic solvents, enhancing its versatility.

The synthesis of LiFSI often involves metathesis reactions, for example, between potassium bis(fluorosulfonyl)imide and lithium tetrafluoroborate. NINGBO INNO PHARMCHEM CO.,LTD. employs precise manufacturing processes to ensure the exceptional purity of their LiFSI, typically exceeding 99%. This high purity is essential for applications where even minor impurities can negatively impact performance, such as in sensitive electrochemical systems.

The primary application for LiFSI is as an electrolyte salt in lithium-ion batteries. It enhances ionic conductivity, improves electrochemical stability, and contributes to the formation of a stable SEI layer, leading to batteries with longer lifespans and improved safety. Beyond batteries, LiFSI is utilized in research laboratories as a component in electrolytes for supercapacitors and other electrochemical devices. Its utility extends to chemical synthesis, where it can act as a catalyst or reagent in various organic reactions.

For professionals in the fields of materials science, electrochemistry, and organic synthesis, sourcing reliable, high-purity chemicals is essential. NINGBO INNO PHARMCHEM CO.,LTD. serves as a dependable Lithium Bis(fluorosulfonyl)imide manufacturer, providing the quality and consistency required for groundbreaking research and industrial production. If you are looking to buy Lithium Bis(fluorosulfonyl)imide for your next project, consider the superior properties offered by NINGBO INNO PHARMCHEM CO.,LTD.