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Energy storage battery of non-aqueous electrolyte solution of fluorine-containing lithium sulfonyl imide

A lithium sulfonimide, non-aqueous electrolyte technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problem of battery performance limiting the application of C/LiFePO4 system lithium batteries, and achieve a battery capacity percentage increase, increase high /Effect of improving low temperature performance and film forming performance, cycle life and shelf life

Inactive Publication Date: 2012-07-11
ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

The deterioration of battery performance at the above extreme temperatures greatly limits the application of C / LiFePO4 system lithium batteries in the field of energy storage

Method used

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  • Energy storage battery of non-aqueous electrolyte solution of fluorine-containing lithium sulfonyl imide
  • Energy storage battery of non-aqueous electrolyte solution of fluorine-containing lithium sulfonyl imide
  • Energy storage battery of non-aqueous electrolyte solution of fluorine-containing lithium sulfonyl imide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The technical solution of the present invention will be described in detail below in conjunction with the embodiments.

[0023] The present invention exemplifies the composition of 1 to 104 electrolyte solutions based on fluorine-containing sulfonimide lithium in the form of a table, and the test data of the battery capacity percentage of each electrolyte solution, see the following table for details:

[0024] Components and battery capacity percentage of non-aqueous electrolyte solution of table 1

[0025] Component A

Component B

Component C

Component D

-30℃

Reality

[0026]

[0027]

[0028]

[0029]

[0030]

[0031]

[0032]

[0033]

[0034]

[0035] It can be seen from the above examples that the fluorine-containing sulfonimide lithium in the electrolyte solution can greatly improve the high-temperature and low-temperature performance of the electrolyte solution. Below ℃), the battery capacity percen...

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Abstract

The invention provides an energy storage battery of non-aqueous electrolyte solution of fluorine-containing lithium sulfonyl imide. The fluorine-containing lithium sulfonyl imide in the battery adopts an anode material based on a lithium titanate parent structure and a cathode material based on a lithium manganate parent structure, the electrolyte solution consists of the fluorine-containing sulfimide lithium, other lithium salts, carbonic esters and / or ethers organic solvents and other function additives, the mol concentration of the fluorine-containing sulfimide lithium in the electrolyte solution is 0.001 to 2 mol / L, the mol concentration of other lithium salts in the electrolyte solution is 0 to 2 mol / L, and the mol concentration of the other function additives in the electrolyte solution is 0 to 0.5 mol / L. The high / low-temperature performance and the film forming performance of the electrolyte solution are greatly improved, after the fluorine-containing sulfimide lithium is applied to lithium titanate / lithium manganate energy storage batteries, the volume percent of the battery is respectively improved under high-temperature and low-temperature conditions, and the circulation and storage service life of the lithium battery is favorably prolonged.

Description

technical field [0001] The invention relates to an energy storage battery of a non-aqueous electrolyte solution containing fluorine-sulfonimide lithium, which belongs to the technical field of chemical materials. Background technique [0002] At present, various energy storage technologies have obvious differences in terms of energy and power density, among which lithium-ion batteries are due to their energy density (volume specific energy and weight specific energy), power density, cycle life, operating temperature range, stability, It has advantages in many aspects such as industrial maturity and environmental protection, and stands out from various energy storage technologies, becoming one of the advanced energy storage technologies that are focused on the development of various energy storage applications. [0003] Lithium iron phosphate is currently the cathode material with the best safety and life performance. It has considerable application potential in the field of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0568H01M4/133H01M4/136H01M10/0567
CPCY02E60/122Y02E60/10
Inventor 李立飞徐丽娜袁翔云
Owner ZHANGJIAGANG GUOTAI HUARONG NEW CHEM MATERIALS CO LTD
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