Electrolytic solution for nonaqueous electrolytic solution battery, and nonaqueous electrolytic solution battery using same

一种非水电解液、电解液的技术，应用在非水电解质蓄电池、非水电解质、电解质等方向，能够解决电池性能降低、电池膨胀、阻碍锂离子移动等问题

Active Publication Date: 2018-10-23
CENT GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] As mentioned above, there are the following reasons for common lithium secondary batteries: the movement of lithium ions is hindered by the decomposed products and gases generated when the non-aqueous electrolyte solution is decomposed on the positive electrode and the negative electrode, or the battery is swollen, thereby causing the battery to reduced performance

Method used

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  • Electrolytic solution for nonaqueous electrolytic solution battery, and nonaqueous electrolytic solution battery using same
  • Electrolytic solution for nonaqueous electrolytic solution battery, and nonaqueous electrolytic solution battery using same
  • Electrolytic solution for nonaqueous electrolytic solution battery, and nonaqueous electrolytic solution battery using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1～1-58

[0213] [Examples 1-1 to 1-58, Comparative Examples 1-1 to 1-43] Evaluation of non-aqueous electrolyte batteries

[0214] High temperature storage characteristics (70°C)

[0215] The following evaluations were performed on the nonaqueous electrolyte solution batteries of Examples 1-1 to 1-58 and Comparative Examples 1-1 to 1-43, respectively.

[0216] First, using the manufactured battery, conditioning was performed under the following conditions at an ambient temperature of 25°C. That is, as the initial charge and discharge, perform constant current and constant voltage charging at a charging upper limit voltage of 4.3V at a rate of 0.1C (3mA), discharge at a constant current at a rate of 0.2C (6mA) until the end-of-discharge voltage is 3.0V, and then charge at a rate of 3.0V. The upper limit voltage is 4.3V, 0.2C rate (6mA) for constant current and constant voltage charging, and 0.2C rate (6mA) for constant current discharge until the end-of-discharge voltage is 3.0V, repea...

Embodiment 2-1～2-47

[0250] [Examples 2-1 to 2-47, Comparative Examples 2-1 to 2-13] Production and evaluation of non-aqueous electrolyte batteries

[0251] By the same procedure as the non-aqueous electrolyte battery of the above-mentioned Example 1-1, the aluminum laminate case battery (capacity 30mAh) equipped with the NCM positive electrode for the test, the graphite negative electrode for the test and the separator made of cellulose were respectively impregnated with Table 6, Electrolyte solutions No.2-1 to 2-47 and comparative electrolyte solutions No.2-1 to 2-13 described in Table 7, thereby making Examples 2-1 to 2-47 and Comparative Examples 2-1 to 2 -13 non-aqueous electrolyte batteries. For these non-aqueous electrolyte batteries, the following evaluations were carried out in the same manner as in Example 1-1 above.

[0252] High temperature storage characteristics (70°C)

[0253] Amount of gas generated during high-temperature storage (70°C)

[0254] Various evaluations (, ) of th...

Embodiment 3-1～3-45、 comparative example 3-1～3-9

[0263] [Examples 3-1 to 3-45, Comparative Examples 3-1 to 3-9] Production and evaluation of non-aqueous electrolyte batteries

[0264] By the same steps as the non-aqueous electrolyte battery of the above-mentioned Example 1-1, the aluminum laminate case battery (capacity 30mAh) with the NCM positive electrode for the test, the graphite negative electrode for the test and the separator made of cellulose were respectively impregnated with those listed in Table 9. Electrolyte No.3-1~3-45 described above, comparative electrolyte No.3-1~3-9, thereby making embodiment 3-1~3-45, comparative example 3-1~3-9 Non-aqueous electrolyte battery. For these non-aqueous electrolyte batteries, the following evaluations were carried out in the same manner as in Example 1-1 above.

[0265] High temperature storage characteristics (70°C)

[0266] Amount of gas generated during high-temperature storage (70°C)

[0267] Various evaluations (, ) of the non-aqueous electrolyte batteries of Exampl...

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Abstract

This electrolytic solution for a nonaqueous electrolytic solution battery comprises: (I) at least one type of silane compound represented by general formula (1); (II) at least one type of compound from cyclic sulfonic acid compounds and cyclic sulfate ester compounds; (III) a nonaqueous organic solvent; and (IV) a solute. The electrolytic solution can achieve, in a balanced manner, an improvementin high-temperature storage properties at 70 DEG C or higher, and the effect of reducing the amount of gas produced during high-temperature storage. (In general formula (1), R1s each independently represent a group including a carbon-carbon unsaturated bond; R2s are each independently selected from a fluorine group or a C1-10 linear or C3-10 branched alkyl group, wherein the alkyl group may include a fluorine atom and / or an oxygen atom; and x is from 2 to 4.) Si(R<1>)<x>(R<2>)<4-x> (1).

Description

technical field [0001] The present invention relates to an electrolyte solution for a nonaqueous electrolyte battery and a nonaqueous electrolyte battery using the same, the electrolyte solution for a nonaqueous electrolyte battery containing: a specific silane compound, and a cyclic sulfonic acid compound and a cyclic sulfuric acid ester at least one of the compounds. Background technique [0002] In recent years, power storage systems for small and high-energy-density applications such as information-related equipment and communication equipment, such as computers, digital video cameras, digital cameras, mobile phones, and smart phones, as well as electric vehicles, hybrid vehicles, and energy storage systems that can be used as fuel cells The demand for high-capacity, high-output, and high-energy-density batteries installed in auxiliary power supplies for vehicles is rapidly expanding. In addition, there is an increasing demand for batteries that can be used for a long p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0567H01M10/052H01M10/0568H01M10/0569
CPCH01M10/0569H01M10/0568H01M10/0567H01M10/0525H01M2300/0025H01M10/052H01M6/168Y02E60/10H01M2300/0037
Inventor 河端涉高桥幹弘森中孝敬久保诚
Owner CENT GLASS CO LTD
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