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Rechargeable battery and its electrolyte formulation

A technology for rechargeable batteries and non-aqueous electrolytes, applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, lithium batteries, etc., can solve the problems of increasing volume, weight complexity and cost, damaging battery performance and life, and limiting battery applications, etc. Achieve the effect of improving battery charge-discharge cycle efficiency, improving power, and reducing gassing

Active Publication Date: 2021-01-05
A123 SYSTEMS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Extremely high or low temperatures can impair battery performance and / or life
To address performance issues at extreme temperatures, batteries can also be incorporated into heating and / or cooling systems, adding size, weight, complexity and cost
In many cases, this limits the use of batteries in extreme temperature environments

Method used

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  • Rechargeable battery and its electrolyte formulation
  • Rechargeable battery and its electrolyte formulation
  • Rechargeable battery and its electrolyte formulation

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0095] Example 1: Electrolyte Formulation

[0096] Example electrolyte formulations according to the present disclosure include: LiPF 6 , 1.0M; LiTFSI, 0.15M; EC, 40vol.%; EMC, 45vol.%; DEC, 10vol.%; PC, 5vol.%; ES, 1.5wt.%; VC, 1wt.%; wt.%.

[0097] The electrolyte formulations were compared with the control electrolyte formulations, as follows and with reference to Figure 1 to Figure 10 discussed. The electrolyte formulation exhibits improved performance in low and high temperature tests relative to a control electrolyte formulation.

[0098] The first control electrolyte formulation contains: LiPF 6 EC, 30 vol.%; EMC, 55 vol.%; DEC, 10 vol.%; PC, 5 vol.%; ES, 1 wt.%; and VC, 2 wt.%. The first control electrolyte formulation contained the sulfonyl-containing first additive ES, but did not provide the salt solution and anti-gassing additives of the present application.

[0099] The second control electrolyte formulation contains: LiPF 6 , 1.15M; EC, 35vol.%; EMC, 40...

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Abstract

A rechargeable battery is provided having a specific combination of anode, cathode and electrolyte formulations. The electrolyte formulation contains an additive system and a salt system. The additive system includes a sulfonyl-containing first additive, an antigassing agent, and a second additive. The salt system comprises lithium and cobalt salts. The disclosed electrolyte formulations reduce gassing and improve performance over a broad temperature range.

Description

technical field [0001] The present disclosure relates to an electrolyte formulation for use in a rechargeable battery comprising at least one sulfonyl-containing first additive, a specific salt system, and an anti-gassing additive in specific proportions. Background technique [0002] Rechargeable batteries generate energy through electrochemical reactions. In conventional rechargeable batteries, the battery is designed to perform optimally at or near room temperature. Extremely high or low temperatures can impair battery performance and / or life. To address performance issues at extreme temperatures, batteries can also be incorporated into heating and / or cooling systems, which add size, weight, complexity and cost. In many cases, this limits the use of batteries in extreme temperature environments. [0003] Recently, some rechargeable batteries have been designed with specific combinations of anode, cathode, and electrolyte compositions to maintain long charge-discharge c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0525H01M10/058H01M10/0567H01M10/0568H01M4/133H01M4/136H01M4/58H01M10/0569
CPCH01M10/0525H01M10/0567H01M10/0568H01M10/058H01M10/056H01M10/052Y02E60/10Y02P70/50
Inventor L·J·皮奈尔C·坎皮恩A·S·格兹泽J·J·曹
Owner A123 SYSTEMS LLC
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