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Non-aqueous electrolyte compositions comprising lithium bis(fluorosulfonyl)imide

A technology of lithium imide and fluorosulfonyl, applied in the field of electrolyte composition, can solve problems such as battery performance loss

Pending Publication Date: 2020-08-07
SOLVAY SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at cathodic potentials above about 4.35 V, these electrolyte solvents may decompose, which may lead to loss of battery performance

Method used

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  • Non-aqueous electrolyte compositions comprising lithium bis(fluorosulfonyl)imide
  • Non-aqueous electrolyte compositions comprising lithium bis(fluorosulfonyl)imide
  • Non-aqueous electrolyte compositions comprising lithium bis(fluorosulfonyl)imide

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[0211] The invention is further defined in the following examples. It should be understood that these Examples, while indicating preferred embodiments of the invention, are given by way of illustration only. From the above discussion and these Examples, one skilled in the art can ascertain the essential characteristics of this invention, and without departing from the spirit and scope thereof, can make various changes and modifications of the invention to adapt it to various usages and conditions .

[0212] The meanings of the abbreviations used are as follows: "°C" means degrees Celsius; "g" means gram, "mg" means milligram, "μg" means microgram, "L" means liter, "mL" means milliliter, "μL" means microliter, "mol" means mole, "mmol" means millimole, "M" means molar concentration, "wt%" means weight percent, "mm" means millimeter, "μm" means microns, "ppm" means parts per million, "h" means hours, "min" means minutes, "psig" means pounds per square inch (gauge pressure), "kP...

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Abstract

Disclosed are electrolyte compositions comprising a fluorinated acyclic carboxylic acid ester, lithium bis(fluorosulfonyl)imide (also called LiFSI); and at least one electrolyte salt. The electrolytecompositions are useful in electrochemical cells, such as lithium-ion batteries.

Description

technical field [0001] The present invention relates to electrolyte compositions comprising lithium bis(fluorosulfonyl)imide (also known as LiFSI). These electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries. Background technique [0002] Batteries containing electrodes made of alkali metals, alkaline earth metals, or compounds containing these metals, such as lithium ion batteries, typically contain electrolyte salts, additives, and non-aqueous solvents for the electrolytes used in these batteries. Additives can enhance battery performance and safety, and therefore a suitable solvent must dissolve electrolyte salts as well as additives. The solvent must also be stable under the conditions prevailing in active battery systems. [0003] Electrolyte solvents used in lithium-ion batteries typically comprise organic carbonate compounds or mixtures, and typically comprise one or more linear carbonates such as, for example, ethyl methyl carb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0567H01M10/0569H01M10/052H01M10/0568
CPCH01M10/052H01M10/0567H01M10/0568H01M10/0569H01M2300/0034Y02E60/10H01M10/0525
Inventor D-H·元D·汉考克H-C·李H-K·黄E-J·文
Owner SOLVAY SA