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Non-aqueous electrolyte solution, rechargeable battery, micro-hybrid battery, and battery system

A technology of non-aqueous electrolyte and electrolyte solution, applied in non-aqueous electrolyte storage battery, electrolyte storage battery manufacturing, lithium storage battery and other directions, can solve the problems of detrimental battery performance and life, increasing volume, weight complexity and cost, limiting battery application, etc. Achieve the effect of improving power, improving battery charge-discharge cycle efficiency, and reducing gas evolution

Pending Publication Date: 2021-04-13
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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  • Non-aqueous electrolyte solution, rechargeable battery, micro-hybrid battery, and battery system
  • Non-aqueous electrolyte solution, rechargeable battery, micro-hybrid battery, and battery system
  • Non-aqueous electrolyte solution, rechargeable battery, micro-hybrid battery, and battery system

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0127] Example 1: Electrolyte Formulation

[0128] Example electrolyte formulations according to the invention comprising: LiPF 6 , 1.0M; LiTFSI, 0.15M; EC, 40vol.%; EMC, 45vol.%; DEC, 10vol.%; PC, 5vol.%; ES, 1.5wt.%; VC, 1wt.%; wt.%.

[0129] 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.

[0130] 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.

[0131] The second control electrolyte formulation contains: LiPF 6 , 1.15M; EC, 35vol.%; EMC, 40vol.%;...

example 2

[0150] Example 2: Electrolyte formulation for control group

[0151] The electrolyte formulation of the control group consisted of 1M LiPF 6Composition, wherein: EC:PC:EMC:DEC=35:5:50:10v / v%+VC2wt.%, "EC" means ethylene carbonate; "PC" means propylene carbonate; "EMC" means methyl ethyl carbonate ester; "DEC" means diethyl carbonate; and "VC" means vinylene carbonate.

example 3

[0152] Example 3: Electrolyte Formulation Containing ES Only

[0153] This electrolyte formula consists of 1M LiPF 6 Composition, wherein, EC:PC:EMC:DEC=35:5:50:10v / v%)+ES1wt%. Here, "ES" means vinyl sulfite. The addition of ES reduces the impedance because ES reacts with the anode to form a solid electrolyte interface (SEI) that is more ionically conductive than the control electrolyte mentioned above. However, during formation, cells with this electrolyte (ie, one containing only ES additives) cannot be charged because the SEI is unstable and a large amount of gas is generated during decomposition.

[0154] Figure 13 This effect is shown where a carbon-based anode is charged with a lithium half-cell for the first time (the "forming" phase of the SEI curve). A slurry containing: 92 wt% artificial graphite dissolved in N-methylpyrrolidone (NMP), 4 wt% conductive graphite additive and 4 wt% polyvinylidene fluoride ( PVDF) binder, dried in an oven and calendered to form ...

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Abstract

The invention discloses a rechargeable battery, a battery system, a micro hybrid battery and a non-aqueous electrolyte solution. The rechargeable battery includes: a carbon-containing negative electrode capable of intercalating and deintercalating lithium; a positive electrode comprising a lithium transition metal oxyanion salt electroactive material; a separator; and a non-aqueous electrolyte solution comprising a lithium salt, lithium bis (trifluoromethane) sulfonamide, at least one organic solvent, and 1, 3-propane sultone, wherein the non-aqueous electrolyte solution does not contain gamma-butyrolactone, and the organic solvent contains vinylene carbonate and ethylene sulfite. The rechargeable battery maintains a long charge / discharge cycle life at high temperatures and also outputs power at low temperatures.

Description

[0001] This application is a divisional application of an invention patent application with an application date of November 6, 2015, a patent application number of 201510753544X, and an invention title of "Non-aqueous electrolyte solution, rechargeable battery, micro-hybrid battery and battery system". technical field [0002] The present invention relates to a non-aqueous electrolyte rechargeable battery having excellent low-temperature characteristics, long-term stability, and high energy density. Background technique [0003] 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0525H01M10/0567H01M4/133H01M4/136H01M4/58H01M10/0568H01M10/0569
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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