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AssigneeSES Holdings Pte. Ltd.
InventorsRajendra P. Singh, Qichao Hu
Estimating the term…
Methods for making high-purity LiFSI salts and intermediate products using one, the other, or both of a reactive-solvent removal/replacement method and an LiFSI purification method. In some embodiments, the reactive-solvent removal/replacement method includes using non-reactive anhydrous organic solvents to remove and/or replace one or more reactive solvents in a crude LiFSI. In some embodiments, the LiFSI purification method includes using anhydrous organic solvents to remove impurities, such as synthesis impurities, from a crude LiFSI. In some embodiments, crude LiFSI can be made using an aqueous-based neutralization process. LiFSI salts and products made using methods of the disclosure are also described, as are uses of such salts and products and electrochemical devices that include such salts and products.
A method of processing a crude salt that contains an alcohol and a lithium salt that is either a lithium bis (fluorosulfonyl) imide (LiFSI) salt or a lithium bis (trifluoromethanesulfonyl) imide (LiTFSI) salt, wherein the alcohol is coordinated or solvated with the lithium salt, the method comprising:
A method of processing a crude salt that contains a reactive solvent and a lithium salt that is either a lithium bis (fluorosulfonyl) imide (LiFSI) salt or a lithium bis (trifluoromethanesulfonyl) imide (LiTFSI) salt, wherein the reactive solvent is coordinated or solvated with the lithium salt, the method comprising:
Dependencies are inferred from the claim text.