Electrolyte system for high voltage lithium ion battery

A technology of lithium-ion batteries and electrolytes, which is applied in lithium batteries, battery electrodes, organic electrolytes, etc., and can solve problems such as inability to meet energy density requirements

Active Publication Date: 2018-01-02
麻省固能(上海)新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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

Method used

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  • Electrolyte system for high voltage lithium ion battery
  • Electrolyte system for high voltage lithium ion battery
  • Electrolyte system for high voltage lithium ion battery

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Embodiment Construction

[0034] Some embodiments disclosed herein relate to batteries, particularly rechargeable (secondary) batteries with lithium anodes, which exhibit improved corrosion resistance across the operating voltage range. The battery may be a secondary high energy density lithium ion battery. A battery can include a cathode, a lithium metal anode, and a non-aqueous electrolyte. The electrolyte inhibits corrosion of surfaces in contact with the electrolyte, such as surfaces comprising stainless steel, aluminum, or aluminum alloys. The cathode may include a high voltage cathode active material. The nonaqueous electrolyte may include a solvent, and a combination of two or more salts. Such salts may include imino salts and perchlorates. The imino salt can be or include a fluorosulfonyl group. The nonaqueous electrolyte can be electrochemically stable at operating voltages between 3V and 4.5V. Nonaqueous electrolytes can be chemically stable with Li metal anodes.

[0035] Some of the em...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0561
CPCH01M10/052H01M2300/0025H01M10/0569H01M4/382H01M10/0568H01M4/661Y02E60/10Y02P70/50H01M4/134H01M4/74H01M10/0567H01M2300/0028Y02T10/70
Inventor 黄在熙李晓波胡启超
Owner 麻省固能(上海)新能源科技有限公司
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