Method for manufacturing lithium-ion-conducting glass ceramic

一种制造方法、玻璃陶瓷的技术，应用在玻璃制造设备、玻璃的成型、制造工具等方向，能够解决锂离子传导性不太良好等问题，达到改善离子传导性的效果

Inactive Publication Date: 2015-04-29
AGC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, generally, such inorganic solid electrolytes tend to have poorer conductivity to lithium ions than liquid electrolytes.
Therefore, at present, lithium-ion secondary batteries using glass electrolytes are only used in some products such as thin-film small batteries for cardiac pacemakers.

Method used

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  • Method for manufacturing lithium-ion-conducting glass ceramic
  • Method for manufacturing lithium-ion-conducting glass ceramic
  • Method for manufacturing lithium-ion-conducting glass ceramic

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0083] (Preparation of Raw Material Slurry)

[0084] When forming granules by the spray drying method, first, raw material slurry is prepared using the raw material prepared by the above-mentioned method.

[0085] The solvent used for the slurry is not particularly limited, and the solvent may be, for example, water, ethanol, acetone, toluene, and / or hexane. Among them, when using an alcohol-based solvent, it is necessary to use a spray drying device with an explosion-proof device, so water is preferably used from the viewpoint of operational efficiency.

[0086] Raw material slurry is obtained by adding and mixing prepared raw materials to a solvent. In addition, what is necessary is just to dissolve a part of said raw material in a solvent. Moreover, the mixing ratio of a raw material and a solvent is not specifically limited. The ratio of the solvent may be, for example, in the range of 40% by weight to 60% by weight relative to the entire raw material slurry.

[0087] ...

example 1

[0133] (Preparation of samples for evaluation)

[0134] The evaluation sample of Example 1 was produced by the following method, and its characteristic was evaluated.

[0135] Samples for evaluation were produced in the following procedure.

[0136] First, mix silica sand (average particle size 30 μm), zirconia (ZrO 2 ) powder (average particle size 20μm), ammonium dihydrogen phosphate (NH 4 h 2 PO 4 ) powder (average particle size 20μm) and sodium carbonate (Na 2 CO 3 ) powder (average particle size 30μm), making SiO 2 -ZrO 2 -P 2 o 5 -Na 2 O conversion was calculated as the raw material composition shown in the column of Example 1 of Table 1, and the powder mixed raw material was prepared. The particle size of each compound is a value measured by a laser diffraction scattering type dry particle size measuring device.

[0137] Next, 2 kg of the powder mixed raw material was added to 2 liters of distilled water and mixed to prepare a raw material slurry. Furthermo...

example 2

[0165] By the same method as in Example 1, the sample for evaluation of Example 2 was produced, and the characteristic was evaluated.

[0166] where, in this Example 2, as P 2 o 5 Source, using sodium hexametaphosphate (NaPO 3 ) 6 Powder (average particle size 150μm) instead of ammonium dihydrogen phosphate (NH 4 h 2 PO 4 )powder.

[0167] It should be noted that, also in Example 2, gas was generated during the grinding process, and the pressure in the container increased. Therefore, degassing was performed every 5 minutes. However, ammonia odor was not confirmed. The pH of the obtained raw material slurry was 8.3. The obtained granules had a particle diameter of about 50 μm. The porosity of the granules is in the range of 30% to 80%. Other conditions are the same as in Example 1.

[0168] Using the sample for evaluation of Example 2, the ion conductivity was measured by the method described above. As a result of the evaluation, the ion conductivity of the evaluat...

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Abstract

This invention has: a step for forming a particulate using a raw material including a SiO2 source, a ZrO2 source, a P2O5 source, and a Na2O source; a step for causing the particulate to pass through a heated gas-phase atmosphere and thereby causing the particulate to melt and then solidify into a powder having a glass phase, the powder containing 20 to 60% of SiO2, 5 to 45% of ZrO2, 3 to 30% of P2O5, and 15 to 45% of Na2O (all figures representing the oxide-basis molar percentage); a step for heat-treating the powder and causing a crystal to be deposited to yield a processed body including a glass ceramic; and a step for performing ion exchanging on the processed body in a molten salt containing lithium ions to yield a lithium-ion-conducting glass ceramic.

Description

technical field [0001] This invention relates to the manufacturing method of the lithium ion conductive glass ceramics which can be used for a lithium ion secondary battery etc., for example. Background technique [0002] Lithium-ion secondary batteries are used as small and high-capacity drive power sources in various fields such as automobiles, personal computers, and mobile phones. [0003] Currently, liquid electrolytes based on organic solvents such as ethylene carbonate, diethyl carbonate, and ethylmethyl carbonate are used as electrolytes for lithium ion secondary batteries. However, such organic solvent-based liquid electrolytes are generally flammable, and therefore present lithium ion secondary batteries may pose a problem in terms of safety. In addition, there is a limit to the durable voltage of an organic solvent-based liquid electrolyte, and when a large voltage is applied, the electrolyte may decompose and deteriorate. [0004] Against such a background, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03C21/00H01M10/0562
CPCH01M10/052H01M10/0562C03B19/102C03B32/02C03C1/00C03C3/062C03C4/18C03C8/08C03C10/0009C03C12/00C03C21/002Y02E60/10C03C2204/00H01M10/0525H01M2300/0071
Inventor 辻村知之篠原伸广
Owner AGC INC
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