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All solid battery and manufacturing method of the same

A technology of an all-solid-state battery and a manufacturing method, applied in secondary batteries, battery electrodes, solid electrolytes, etc., can solve problems such as electrolyte leakage

Pending Publication Date: 2020-10-09
TAIYO YUDEN KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are problems such as electrolyte leakage in secondary batteries using electrolyte

Method used

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  • All solid battery and manufacturing method of the same
  • All solid battery and manufacturing method of the same
  • All solid battery and manufacturing method of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] LiPO, which is a Li-P-O compound, is added to a phosphate-based solid electrolyte with a predetermined particle size. 3 The finely pulverized amorphous powder was used as a sintering aid and dispersed in a dispersion medium to produce a solid electrolyte slurry. The sintering aid is 20wt% with respect to the phosphate-based solid electrolyte, so that the P:Li ratio is 1:1. A solid electrolyte paste was produced by adding a binder to the obtained solid electrolyte slurry. Green sheets were produced by coating the solid electrolyte paste.

[0089] Next, for example, use a wet bead mill to manufacture the following components: Weigh electrode active materials, solid electrolytes, and carbon materials, mix them with solvents, and binders to form a slurry and apply them to a sheet. electrode sheet. As a carbon material, use an average particle size of 80nm and a specific surface area of ​​24m 2 / g, DBP oil absorption is 28mL / 100g of material.

[0090] Next, a carbon-mix...

Embodiment 2

[0092] In Example 2, the carbon material used as the electrode sheet mixed with carbon has an average particle diameter of 40 nm and a specific surface area of ​​62 m 2 / g, DBP oil absorption is 200mL / 100g of material. Other conditions are identical with embodiment 1.

Embodiment 3

[0094] In Example 3, the carbon material used as the electrode sheet mixed with carbon has an average particle diameter of 120 nm and a specific surface area of ​​20 m 2 / g, DBP oil absorption is 35mL / 100g of material. Other conditions are identical with embodiment 1.

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Abstract

The invention provides an all solid battery and a manufacturing method of the same. The all solid battery includes: a solid electrolyte layer including a glass component, a main component of the solidelectrolyte layer being phosphoric acid salt-based solid electrolyte; and electrode layers that are provided on both main faces of the solid electrolyte layer, wherein the electrode layers include acarbon material having an average particle diameter of 40 nm or more and 120 nm or less, wherein a DBP oil absorption of the carbon material is 200 mL / 100 g or less.

Description

technical field [0001] The invention relates to an all-solid-state battery and a manufacturing method thereof. Background technique [0002] In recent years, secondary batteries have been used in various fields. Secondary batteries using an electrolyte solution have problems such as leakage of the electrolyte solution. Therefore, the development of an all-solid-state battery having a solid electrolyte and other constituent elements also made of solid has been carried out. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2017-212123 Contents of the invention [0006] The technical problem to be solved by the invention [0007] Pd (palladium) has a property that it is difficult to react with various materials, so in order to ensure electron conductivity, it is considered to use Pd as a conductive additive of the electrode layer. However, Pd in ​​the electrode layer is an impediment to increasing the filli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0562H01M10/0583H01M4/583H01M4/62
CPCH01M10/0562H01M10/0583H01M4/583H01M4/625H01M2300/0068H01M10/0525H01M4/5825H01M4/485H01M4/587Y02E60/10Y02P70/50H01M2300/0008H01M2004/021H01M4/133
Inventor 富泽祥江伊藤大悟川村知荣关口正史佐藤宇人
Owner TAIYO YUDEN KK
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