Solid electrolyte ceramic material and production method therefor

A technology of solid electrolytes and ceramic materials, applied in electrolytes, cable/conductor manufacturing, circuits, etc.

Active Publication Date: 2014-11-19
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of air battery also has the above-mentioned problem of dendrites, and it is strongly required to solve the same problem as above.

Method used

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  • Solid electrolyte ceramic material and production method therefor
  • Solid electrolyte ceramic material and production method therefor
  • Solid electrolyte ceramic material and production method therefor

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0072] example 1: Fabrication and evaluation of oxide sintered body

[0073] Lithium hydroxide (Kanto Chemical Co., Ltd.), lanthanum hydroxide (Shin-Etsu Chemical Co., Ltd.), zirconia (Tosoh Corporation), and tantalum oxide were prepared as raw material components for preparation of raw materials for firing. These powders were weighed and formulated as LiOH:La(OH) 3 : ZrO 2 : Ta 2 o 5 = 7: 3: 1.625: 0.1875, mixed with a stirrer to obtain raw materials for firing.

[0074] As the first firing step, the above-mentioned raw materials for firing were charged into an alumina crucible, the temperature was raised at 600° C. / hour in an air atmosphere, and the temperature was maintained at 900° C. for 6 hours.

[0075] As the second firing step, γ-Al at various concentrations shown in Table 1 was added to the powder obtained in the first firing step 2 o 3 and / or magnesium oxide, the powder was mixed with ball stones, and pulverized by a vibration mill for 3 hours to obtain pulv...

example 2

[0091] Example 2: Fabrication of Oxide Sintered Compact Sheet

[0092] A sintered body was produced in the same manner as in Sample 5 of Example 1, except that molding and firing were performed so that the size of the sintered body was approximately 55 mm square and 10 mm thick. The photographs taken of the obtained sintered body are as follows Figure 7A and Figure 7B shown. This sintered body was cut with a wire saw to obtain a sintered body thin plate of about 50 mm square and 0.2 mm thick. The obtained sintered thin plates are photographed side by side as Figure 8 shown.

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Abstract

Provided is a solid electrolyte ceramic material which exhibits high density, high strength, and lithium ion conductivity, and with which defects such as uneven calcination, crack formation and pores, and the occurrence of abnormal grain growth are inhibited or avoided. This ceramic material is an oxide sintered body having a garnet or garnet-like crystal structure configured from at least Li, La, Zr, and O. The oxide sintered body further includes Al and Mg as additional elements.

Description

[0001] This application claims priority based on JP Patent application No. 2012-46590 for which it applied on March 2, 2012, The entire disclosure content is taken in into this specification by reference. technical field [0002] The invention relates to a solid electrolyte ceramic material with lithium ion conductivity and a manufacturing method thereof. Background technique [0003] In recent years, with the development of portable devices such as personal computers and mobile phones, and further development of low-pollution vehicles (eco-friendly vehicles) such as hybrid vehicles and electric vehicles, the demand for secondary batteries as their power sources is rapidly expanding. In secondary batteries for such applications, liquid electrolytes (electrolytes) are widely used, but from the viewpoint of improving safety, solid electrolytes are being used instead of liquid electrolytes, and all-solid batteries in which all battery elements are composed of solids Development...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/50H01B1/06H01B13/00H01M10/00H01B1/08
CPCH01M2300/0071C04B2235/3206C04B2235/6562C04B35/62685C04B2235/3227C04B2235/6567C04B2235/3251C04B2235/3203C04B2235/77C04B2235/3217C04B2235/3244C04B35/486C04B2235/96H01B1/08C04B2235/764H01M10/0562Y02E60/10
Inventor 古川昌宏本多昭彦山本一博
Owner NGK INSULATORS LTD
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