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Preparation method of high-density garnet type inorganic solid electrolyte material

A solid electrolyte, garnet-type technology, applied in the manufacture of electrolyte batteries, electrolytes, non-aqueous electrolyte batteries, etc., can solve the problem of low density, achieve the effect of improving sintering density, obvious effect, and simple operation

Inactive Publication Date: 2018-11-27
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a low-cost, easy-to-preparation method for preparing a high-density garnet-type inorganic solid-state electrolyte material in order to solve the problem of low density of the current garnet-type solid-state electrolyte material

Method used

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  • Preparation method of high-density garnet type inorganic solid electrolyte material

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Effect test

Embodiment 1

[0032] The preparation method of the high-density garnet type solid electrolyte with the impregnating liquid concentration of 30wt% specifically comprises the following steps:

[0033] (1) Unimpregnated garnet-type solid electrolyte material

[0034] Weigh 2.7797g of lithium carbonate, 4.8871g of lanthanum oxide, 2.1686g of zirconia, and 0.5320g of tantalum pentoxide into an agate ball mill jar, add agate beads (according to the ratio of ball mill beads, large, medium, and small: 1:6:30) ) and absolute ethanol (20ml) for ball milling, after the ball milling, dry in a blast oven at 80 degrees Celsius for 12 hours, put the dried raw materials in an alumina crucible and put them in a high-temperature muffle furnace for sintering, and control the heating rate 10°C / min to raise the temperature to 950°C for 6 hours, then cool down to room temperature with the furnace temperature to obtain the precursor powder, fully grind the precursor powder in a mortar, and then screen the precurs...

Embodiment 2

[0040] The preparation method of the high-density garnet type solid electrolyte with the impregnating liquid concentration of 40wt% specifically comprises the following steps:

[0041] (1) Unimpregnated garnet-type solid electrolyte material

[0042] Weigh 2.7797g of lithium carbonate, 4.8871g of lanthanum oxide, 2.1686g of zirconia, and 0.5320g of tantalum pentoxide into an agate ball mill jar, add agate beads (according to the ratio of ball mill beads, large, medium, and small: 1:6:30) ) and absolute ethanol (20ml) for ball milling, after the ball milling, dry in a blast oven at 80 degrees Celsius for 12 hours, put the dried raw materials in an alumina crucible and put them in a high-temperature muffle furnace for sintering, and control the heating rate 10°C / min to raise the temperature to 950°C for 6 hours, then cool down to room temperature with the furnace temperature to obtain the precursor powder, fully grind the precursor powder in a mortar, and then screen the precurs...

Embodiment 3

[0048] The preparation method of the high-density garnet type solid electrolyte with the impregnating liquid concentration of 50wt% specifically comprises the following steps:

[0049] (1) Unimpregnated garnet-type solid electrolyte material

[0050] Weigh 2.7797g of lithium carbonate, 4.8871g of lanthanum oxide, 2.1686g of zirconia, and 0.5320g of tantalum pentoxide into an agate ball mill jar, add agate beads (according to the ratio of ball mill beads, large, medium, and small: 1:6:30) ) and absolute ethanol (20ml) for ball milling, after the ball milling, dry in a blast oven at 80 degrees Celsius for 12 hours, put the dried raw materials in an alumina crucible and put them in a high-temperature muffle furnace for sintering, and control the heating rate 10°C / min to raise the temperature to 950°C for 6 hours, then cool down to room temperature with the furnace temperature to obtain the precursor powder, fully grind the precursor powder in a mortar, and then screen the precurs...

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Abstract

The invention relates to a preparation method of a high-density garnet type inorganic solid electrolyte material. The preparation method of the high-density garnet type inorganic solid electrolyte material comprises the following steps: (1) weighing a lithium source, a lanthanum source, a zirconium source and a tantalum source, adding ethanol, and carrying out ball-milling to obtain a powder mixedraw material; (2) calcining the powder mixed raw material in a high-temperature muffle furnace, and grinding and sieving after calcining to obtain uniformly granular precursor powder; (3) carrying out tabletting forming on the precursor powder to obtain precursor tablets, covering the precursor tablets with the precursor powder and sintering in the high-temperature muffle furnace, and cooling toa room temperature in the furnace to obtain inorganic solid garnet type electrolyte plates; (4) carrying out dipping treatment on the inorganic solid garnet type electrolyte plates by using dipping fluid, wherein the dipping fluid is a deionized aqueous solution of a mixture of the lithium source, the lanthanum source, the zirconium source and the tantalum source; and (5) drying a sample subjectedto dipping treatment, and calcining the sample in the high-temperature muffle furnace to obtain the high-density garnet type inorganic solid electrolyte material.

Description

technical field [0001] The invention belongs to the field of battery material chemistry, and in particular relates to a preparation method of a high-density garnet-type inorganic solid-state electrolyte material. Background technique [0002] With the development of portable electronic devices such as mobile phones and computers, the market scale of lithium-ion batteries continues to expand. Lithium-ion batteries are not only used in small electronics and electrical appliances, but also in large-scale power equipment. The world-renowned electric car Tesla has equipped lithium-ion batteries to cars. Following Tesla, Chinese auto companies such as BYD and SAIC have successively launched a variety of lithium-ion battery electric vehicles. [0003] Currently on the market are mainly lithium-ion batteries with organic liquid electrolytes. The electrolyte is volatile, flammable and other reasons, so its application is limited, and the safety problem is worrying. Although scient...

Claims

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Application Information

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IPC IPC(8): H01M10/0562H01M10/0525H01M10/058
CPCH01M10/0525H01M10/0562H01M10/058H01M2300/0071Y02E60/10Y02P70/50
Inventor 赖春艳杨帅艾进进雷轶轲
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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