Electrolyte system for high voltage lithium ion battery

Abstract

A secondary high energy density lithium ion cell includes a cathode comprising a high voltage cathode active material, a lithium metal anode, and a non-aqueous electrolyte, wherein the non-aqueous electrolyte comprises an imide salt with a fluorosulfonyl group and a perchlorate salt, wherein the electrolyte is electrochemically stable at operating voltages greater than 4.2V.

Description

[0001] References to related applications [0002] Pursuant to 35 U.S.C. 119(e), this application claims the benefit of U.S. Provisional Patent Application 62 / 120,576, filed February 15, 2015, the entire contents of which are expressly incorporated herein by reference. [0003] All patents, patent applications, and publications cited herein are hereby incorporated by reference in their entirety. The entire contents of these disclosures are incorporated by reference into this application to more fully describe the prior art known to those skilled in the art as of the date of the invention described herein. technical field [0004] The present disclosure relates generally to rechargeable batteries, and more particularly to rechargeable lithium batteries, and the use of non-aqueous electrolytes with improved properties. Background technique [0005] In the past decade, there have been many inventions and improvements for the next generation of high energy density rechargeable ...

AI Technical Summary

Problems solved by technology

However, current Li-ion battery technology cannot meet the increasing energy density requirements

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