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Electrolyte for non-aqueous electrolyte battery and non-aqueous electrolyte battery using same

A non-aqueous electrolyte, electrolyte technology, applied in non-aqueous electrolyte batteries, non-aqueous electrolytes, batteries, etc., can solve the problems of low temperature characteristics reduction, internal resistance increase, etc., to achieve high discharge voltage, excellent cycle characteristics, excellent low temperature Effects of Output Features

Active Publication Date: 2020-03-13
CENT GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the battery characteristics at high temperatures are improved, the internal resistance increases significantly, and the low-temperature characteristics become a problem.

Method used

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  • Electrolyte for non-aqueous electrolyte battery and non-aqueous electrolyte battery using same
  • Electrolyte for non-aqueous electrolyte battery and non-aqueous electrolyte battery using same
  • Electrolyte for non-aqueous electrolyte battery and non-aqueous electrolyte battery using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0124] As the non-aqueous electrolyte, use electrolyte No.1, LiNi 1 / 3 mn 1 / 3 co 1 / 3 o 2 Batteries were produced as the positive electrode material and graphite as the negative electrode material, and the high-temperature cycle characteristics, high-temperature storage characteristics, and low-temperature output characteristics of the batteries were actually evaluated. The test battery was produced as follows.

[0125] In LiNi 1 / 3 mn 1 / 3 co 1 / 3 o 2 5% by mass of polyvinylidene fluoride (PVDF) as a binder and 5% by mass of acetylene black as a conductive material were mixed with 90% by mass of the powder, and N-methylpyrrolidone was added to prepare a paste. This paste was applied on an aluminum foil and dried to prepare a test positive electrode body. In addition, 10% by mass of PVDF as a binder was mixed with 90% by mass of graphite powder, and N-methylpyrrolidone was further added to form a slurry. This slurry was coated on a copper foil, and dried at 150° C. for 12 ...

Embodiment 1-2～1-65

[0135] [Examples 1-2 to 1-65, Comparative Examples 1-1 to 1-64]

[0136] Electrolyte solutions No. 2 to 129 were used instead of electrolytic solution No. 1 to produce the same batteries as in Example 1-1, and the high-temperature cycle characteristics, high-temperature storage characteristics, and low-temperature output characteristics were evaluated in the same manner. The evaluation results are shown in Table 3 and Table 4.

[0137] [Table 1]

[0138]

[0139] [Table 2]

[0140]

[0141] [table 3]

[0142]

[0143] *Relative value when the value of Comparative Example 1-1 is set to 100

[0144] [Table 4]

[0145]

[0146] *Relative value when the value of Comparative Example 1-1 is set to 100

[0147] Comparing the above results, it can be confirmed that by using the first compound and the second compound in combination, compared with Comparative Examples 1-2 to 1-14 using the first compound alone, it can be confirmed that the high-temperature cycle charact...

Embodiment 2-1～2-43、 comparative example 2-1～2-20

[0152] In Examples 2-1 to 2-43 and Comparative Examples 2-1 to 2-20, as shown in Table 6, except that the negative electrode body and the electrolyte solution were changed, non- Electrolyte solutions are used for aqueous electrolyte batteries, batteries are produced, and battery evaluations are performed. It should be noted that the negative electrode active material is Li 4 Ti 5 o 12 In Examples 2-1 to 2-13 and Comparative Examples 2-1 to 2-5, the negative electrode body is produced as follows: in Li 4 Ti 5 o 125% by mass of PVDF as a binder and 5% by mass of acetylene black as a conductive agent are mixed with 90% by mass of powder, and N-methylpyrrolidone is added, and the resulting paste is applied on a copper foil and dried. , the end-of-charge voltage at the time of battery evaluation was set to 2.8V, and the end-of-discharge voltage was set to 1.5V. In addition, in Examples 2-14 to 2-30 and Comparative Examples 2-6 to 2-15 in which the negative electrode active ma...

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Abstract

The present invention provides an electrolyte solution for a non-aqueous electrolyte battery capable of an exerting high average discharge voltage and an excellent low-temperature output characteristic at -30 DEG C or lower and an excellent cycle characteristic and an excellent storage characteristic at high temperatures of 50 DEG C or higher, as well as a non-aqueous electrolyte battery containing the same. The present electrolyte solution comprises a non-aqueous solvent, a solute, at least one silane compound represented by the following general formula (1) as a first compound, and a fluorine-containing compound represented by the following general formula (3), for example, as a second compound. Si(R1)a(R2)4-a (1).

Description

[0001] This application is a divisional application of an application with an application date of February 18, 2016, an application number of 201680010967.5, and an invention title of "electrolyte for non-aqueous electrolyte battery and non-aqueous electrolyte battery using it". technical field [0002] The present invention relates to an electrolyte solution for a nonaqueous electrolyte battery containing a specific silane compound and a salt having a fluorophosphoryl structure and / or a fluorosulfonyl structure, and a nonaqueous electrolyte battery using the same. Background technique [0003] In recent years, power storage systems for information-related equipment or communication equipment, that is, small equipment such as personal computers, video cameras, digital scene cameras, and mobile phones that require high energy density, as well as auxiliary equipment for electric vehicles, hybrid vehicles, and fuel cell vehicles. Power storage systems for large-scale equipment s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0567H01M10/0568H01M10/0525H01M10/054
CPCH01M10/0525H01M10/054H01M10/0567H01M10/0568H01M2300/0025H01M10/052H01M10/0569Y02E60/10C07C307/02C07C317/24C07F7/0805C07F7/12C07F9/02C07F9/26C07F9/28H01M2220/20H01M2220/30H01M2300/0028
Inventor 久保诚森中孝敬高桥干弘新免益隆河端涉松崎宽树
Owner CENT GLASS CO LTD
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