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Solid Electrolyte, Method For Producing Solid Electrolyte, And Composite

A solid electrolyte and manufacturing method technology, applied in the direction of electrolyte storage battery manufacturing, solid electrolyte, non-aqueous electrolyte storage battery, etc., can solve the problem of low grain boundary resistance

Pending Publication Date: 2021-09-10
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, a solid electrolyte capable of obtaining a solid electrolyte molded body with a sufficiently low grain boundary resistance at a sufficiently low calcination temperature has not been obtained.

Method used

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  • Solid Electrolyte, Method For Producing Solid Electrolyte, And Composite
  • Solid Electrolyte, Method For Producing Solid Electrolyte, And Composite
  • Solid Electrolyte, Method For Producing Solid Electrolyte, And Composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0391] In the present example, the following method was used to manufacture the composition Li 6.35 (La 2.95 Sr 0.05 )(Zr 1.30 Sb 0.50 Ta 0.20 )O 12 The pre-calcined product of the solid electrolyte indicated.

[0392] First, 7.620 g of the 2-n-butoxyethanol solution of lithium nitrate and 2.950 g of the 2-n-butoxyethanol solution of lanthanum nitrate hexahydrate prepared in the above-mentioned manner were weighed into a reagent bottle made of pyrex glass. , 2 mL of 2-n-butoxyethanol as an organic solvent. A magnetic stirrer was put into it, and then placed on a hot plate with a magnetic stirrer function.

[0393] The set temperature of the hot plate was set to 160° C., the rotation speed was set to 500 rpm, and heating and stirring were performed for 30 minutes.

[0394] Next, 2 mL of 2-n-butoxyethanol was added, and heating and stirring were performed again for 30 minutes. If the heating and stirring for 30 minutes were taken as one dehydration treatment, the dehydr...

Embodiment 2

[0403] In the present example, the following method was used to manufacture the composition Li 6.55 (La 2.75 Sr 0.25 )(Zr 1.30 Sb 0.50 Ta 0.20 )O 12 The pre-calcined product of the solid electrolyte indicated.

[0404] First, 7.860 g of the 2-n-butoxyethanol solution of lithium nitrate and 2.750 g of the 2-n-butoxyethanol solution of lanthanum nitrate hexahydrate prepared in the above-mentioned manner were weighed into a reagent bottle made of pyrex glass. , 2 mL of 2-n-butoxyethanol as an organic solvent. A magnetic stirrer was put into it, and then placed on a hot plate with a magnetic stirrer function.

[0405] The set temperature of the hot plate was set to 160° C., the rotation speed was set to 500 rpm, and heating and stirring were performed for 30 minutes.

[0406] Next, 2 mL of 2-n-butoxyethanol was added, and heating and stirring were performed again for 30 minutes. If the heating and stirring for 30 minutes were taken as one dehydration treatment, the dehydr...

Embodiment 3

[0415] In the present example, the following method was used to manufacture the composition Li 6.00 (La 2.85 Sr 0.15 )(Zr 0.85 Nb 0.25 Sb 0.50 Ta 0.40 )O 12 The pre-calcined product of the solid electrolyte indicated.

[0416] First, 7.200 g of the 2-n-butoxyethanol solution of lithium nitrate and 2.850 g of the 2-n-butoxyethanol solution of lanthanum nitrate hexahydrate prepared in the above-mentioned manner were weighed into a reagent bottle made of pyrex glass. , 2 mL of 2-n-butoxyethanol as an organic solvent. A magnetic stirrer was put into it, and then placed on a hot plate with a magnetic stirrer function.

[0417] The set temperature of the hot plate was set to 160° C., the rotation speed was set to 500 rpm, and heating and stirring were performed for 30 minutes.

[0418] Next, 2 mL of 2-n-butoxyethanol was added, and heating and stirring were performed again for 30 minutes. If the heating and stirring for 30 minutes were taken as one dehydration treatment, t...

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Abstract

The invention provides a solid electrolyte, a method for producing the solid electrolyte, and a composite. The present invention provides a solid electrolyte with which it is possible to obtain a solid electrolyte molded body having a sufficiently low grain boundary resistance at a sufficiently low calcination temperature and with which it is possible to obtain a solid electrolyte molded body having a sufficiently low grain boundary resistance at a sufficiently low calcination temperature, and provides a solid electrolyte with which it is possible to obtain a solid electrolyte molded body having a sufficiently low grain boundary resistance at a sufficiently low calcination temperature. A solid electrolyte molded body having sufficiently low grain boundary resistance can be obtained at a sufficiently low calcination temperature; and a composite having sufficiently low grain boundary resistance between the active material and the solid electrolyte is provided. The solid electrolyte according to the present invention is characterized by being represented by composition formula (1): Li7-x + y (La3-ySry) (Zr2-xMx)O12 (in formula (1), x and y satisfy 0.20 < = x < 1.50, 0.00 < y < 0.30, and M is two or more elements selected from the group consisting of Nb, Ta, and Sb. ).

Description

technical field [0001] The present invention relates to a solid electrolyte, a method for producing the solid electrolyte, and a complex. Background technique [0002] Lithium batteries (including primary batteries and secondary batteries) are used as power sources for many electric devices including portable information devices. Among them, an all-solid-state lithium battery using a solid electrolyte for lithium conduction between a positive electrode and a negative electrode has been proposed as a lithium battery having both high energy density and safety (see, for example, Patent Document 1). [0003] Solid electrolytes are able to conduct lithium ions without using an organic electrolyte, and there is no leakage of the electrolyte, or evaporation of the electrolyte due to drive heat, and are therefore attracting attention as a highly safe material. [0004] As a solid electrolyte used in such an all-solid lithium battery, an oxide-type solid electrolyte having high lith...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0562H01M10/058H01M10/0525
CPCH01M10/0562H01M10/058H01M10/0525H01M2300/0091H01M2300/0071Y02P70/50Y02E60/10H01M2300/0068H01M4/131H01M4/0471
Inventor 山本均寺冈努横山知史
Owner SEIKO EPSON CORP