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Solid electrolyte composition, solid electrolyte-containing sheet, all-solid-state secondary battery, and method for producing solid electrolyte-containing sheet and all-solid-state secondary battery

A solid electrolyte and composition technology, applied in the direction of non-aqueous electrolyte battery electrodes, solid electrolytes, secondary batteries, etc., can solve the problems of reducing battery resistance, achieve excellent dispersion stability, high battery voltage, and excellent ion conductivity Effect

Active Publication Date: 2019-01-04
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in Patent Document 1, it is described that by making the solid electrolyte layer of an all-solid secondary battery a structure containing a specific sulfide solid electrolyte material and a hydrophobic polymer, the battery resistance is reduced.

Method used

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  • Solid electrolyte composition, solid electrolyte-containing sheet, all-solid-state secondary battery, and method for producing solid electrolyte-containing sheet and all-solid-state secondary battery
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  • Solid electrolyte composition, solid electrolyte-containing sheet, all-solid-state secondary battery, and method for producing solid electrolyte-containing sheet and all-solid-state secondary battery

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preparation example Construction

[0208] (Preparation of solid electrolyte composition)

[0209] The solid electrolyte composition of the present invention can be prepared by dispersing the inorganic solid electrolyte (A) and the binder (B) in the presence of the dispersion medium (C) to slurry.

[0210] Slurry can be performed by mixing the inorganic solid electrolyte, binder, and dispersion medium using various mixers. It does not specifically limit as a mixing apparatus, For example, a ball mill, a bead mill, a planetary mixer, a scraper mixer, a roll mill, a kneader, and a disc mill are mentioned. The mixing conditions are not particularly limited. For example, when using a ball mill, mixing is preferably performed at 150 to 700 rpm (rotation per minute) for 1 hour to 24 hours.

[0211] In the case of preparing a solid electrolyte composition containing components such as an active material and a particle dispersant, the addition and mixing may be carried out simultaneously with the dispersion process of ...

Embodiment 1

[0296]

[0297] A dispersion stability test, a viscosity measurement, a volume average particle diameter measurement of an inorganic solid electrolyte in the solid electrolyte composition, and an ion conductivity measurement were performed on the prepared solid electrolyte composition described below. The test and measurement results are summarized in Table 1 below.

[0298] Furthermore, the dispersion stability test and the measurement of the viscosity were performed about the composition for positive electrodes and the composition for negative electrodes prepared below. The test and measurement results are summarized in Tables 2 and 3 below.

[0299] The test method and measurement method are described below.

[0300]

[0301] After preparing each composition described below, it was left to stand at 25° C. in a transparent sample bottle for 24 hours. The state of each composition before and after standing still for 24 hours was observed visually. The solid content of ...

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Abstract

Provided is a solid electrolyte composition containing: an inorganic solid electrolyte that is conductive with respect to ions of metals belonging to group 1 or 2 of the periodic table; a binder; anda dispersion medium. The dispersion medium contains an alicyclic compound comprising carbon atoms in addition to hydrogen atoms and / or halogen atoms. The boiling point of the alicyclic compound at 760mmHg is 100-180 DEG C. Also provided are a solid electrolyte-containing sheet, an all-solid-state secondary battery, and a method for producing the solid electrolyte-containing sheet and the all-solid-state secondary battery.

Description

technical field [0001] The invention relates to a solid electrolyte composition, a solid electrolyte-containing sheet, an all-solid secondary battery, and a manufacturing method for the solid electrolyte-containing sheet and the all-solid secondary battery. Background technique [0002] A lithium ion secondary battery is a secondary battery that has a negative electrode, a positive electrode, and an electrolyte sandwiched between the negative electrode and the positive electrode, and is capable of reciprocating lithium ions between the two electrodes for charging and discharging. Conventionally, in lithium ion secondary batteries, an organic electrolytic solution is used as an electrolyte. However, organic electrolytes are prone to liquid leakage and may be ignited due to short-circuiting inside the battery due to overcharging or overdischarging, and further improvements in reliability and safety are required. [0003] Under such circumstances, an all-solid-state secondary ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/06H01B1/10H01B13/00H01M4/13H01M4/62H01M10/0562H01M10/0585
CPCH01B1/06H01B1/10H01M4/13H01M4/62H01M2300/0045H01M2300/0068H01M2300/0091H01M10/0562H01M10/0525Y02E60/10Y02P70/50H01M10/0585H01M2300/0071H01M4/621
Inventor 牧野雅臣望月宏显三村智则
Owner FUJIFILM CORP
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