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Solid electrolyte material with high ion conductivity and strong mechanical properties and preparation method thereof

A solid electrolyte, ionic conductivity technology, applied in electrolytes, circuits, electrical components, etc., can solve problems such as explosion, flammability, liquid leakage, etc.

Active Publication Date: 2016-09-28
淄博佳润纺织有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The object of the present invention is to provide a solid electrolyte material with high ionic conductivity and strong mechanical properties and a preparation method thereof. The solid electrolyte material provided by the present invention replaces the liquid electrolyte of lithium ion batteries, and solves the problems of liquid leakage, explosion, Safety issues such as flammability are conducive to the miniaturization of batteries and the diversification of product shapes

Method used

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  • Solid electrolyte material with high ion conductivity and strong mechanical properties and preparation method thereof
  • Solid electrolyte material with high ion conductivity and strong mechanical properties and preparation method thereof
  • Solid electrolyte material with high ion conductivity and strong mechanical properties and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1-5

[0058] The chemical formula of embodiment 1-5 is Li 6+x (La z A 3-z )(Zr n G 2-n )O 12 .

[0059] Ingredients: A is at least one selected from Ca, Sr, Y, and Ba, G is at least one selected from Ti, Nb, Ta, Sb, and V, and satisfies 0≤x≤2, 2≤z≤ 3. 1≤n≤2, the solid electrolyte material of the present invention is prepared through the following steps:

[0060] (1) Using analytically pure chemical reagent Li 2 CO 3 , La 2 o 3 , CaCO 3 、BaCO 3 , ZrO 2 , SrCO 3 , Y 2 o 3 、TiO 2 , Nb 2 o 5 、 Ta 2 o 5 , Sb 2 o 3 , V 2 o 5 as raw material, according to Li 6+x (La z A 3-z )(Zr n G 2-n )O 12 The general chemical formula configures the molar ratio of raw materials, where 0≤x≤2, 2≤z≤3, 1≤n≤2. Put the prepared raw materials into a 50KG horizontal ceramic ball mill for ball milling for 16 hours;

[0061] (2) After drying the ball-milled slurry, press it into a large sheet with a diameter of 40 mm under a pressure of 30 MPa, and pre-burn it at 800 ° C for 4 hour...

Embodiment 6-10

[0070] According to the general formula of chemical composition Li 6+x La 3 (Zr n G 2-n )O 12 +αwt%D ingredients, wherein G is at least one selected from Ti, Nb, Ta, Sb, V, and D is selected from SiO 2 、 Bi 2 o 3 , B 2 o 3 , CeO 2 , ZnO, CuO, MnO 2 、Co 2 o 3 , SnO 2 At least one of them, and satisfy 0≤x≤2, 1≤n≤2, 0<α≤3, and prepare the solid electrolyte material of Examples 6-10 through the following steps:

[0071] (1) Using analytically pure chemical reagent Li 2 CO 3 , La 2 o 3 , ZrO 2 、TiO 2 , Nb 2 o 5 、 Ta 2 o 5 , Sb 2 o 3 , V 2 o 5 as raw material, according to Li 6+x La 3 (Zr n G 2-n )O 12 The molar ratio of the general chemical formula, where 0≤x≤2, 1≤n≤2. Put the prepared raw materials into a 50KG horizontal ceramic ball mill for ball milling for 16 hours;

[0072] (2) After drying the ball-milled slurry, press it into a large sheet with a diameter of 40 mm under a pressure of 30 MPa, and pre-burn it at 950 ° C for 4 hours at a heating...

Embodiment 11-14

[0082] According to the general formula of chemical composition Li 6+x (La z A 3-z )Zr 2 o 12 +αwt% D ingredients, wherein A is at least one selected from Ca, Sr, Y, Ba, and D is selected from SiO 2 、 Bi 2 o 3 , B 2 o 3 , CeO 2 , ZnO, CuO, MnO 2 、Co 2 o 3 , SnO 2 At least one of them, and satisfying 0≤x≤2, 2≤z<3, 0<α≤3, using the same preparation method as in Examples 6-10 to prepare solid electrolyte materials.

[0083] See Table 3 for the chemical formulas and test results of the solid electrolyte materials in Examples 11-14.

[0084] The chemical formula and test result thereof of the solid electrolyte material of table 3 embodiment 11-14

[0085]

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Abstract

The invention relates to a solid electrolyte material with high ion conductivity and strong mechanical properties and a preparation method thereof. The solid electrolyte material has a chemical formula Li6+xAly(LazA3-z)(ZrnG2-n)O12+alphawt%D, wherein A is selected from at least one of Ca, Sr, Y and Ba; G is selected from at least one of Ti, Nb, Ta, Sb and V; D is selected from at least one of SiO2, Bi2O3, B2O3, CeO2, ZnO, CuO, MnO2, Co2O3 and SnO2; x is more than or equal to 0 and smaller than or equal to 2, y is more than or equal to 0 and smaller than or equal to 1, z is more than or equal to 2 and smaller than or equal to 3, n is more than or equal to 1 and smaller than or equal to 2, and alpha is more than or equal to 0 and smaller than or equal to 3. The safety problems of liquid leakage and explosive and flammable properties and the like of a lithium ion liquid battery are solved; miniaturization of the battery and shape diversification of products are facilitated; a process route is simple, and large-batch production is easy to realize; a sample sintering temperature is low, and heat-preservation time is short; the volatilization of lithium ions is reduced, and the sintering cost is greatly reduced.

Description

technical field [0001] The invention relates to a solid electrolyte material with high ion conductivity and strong mechanical performance and a preparation method thereof. Background technique [0002] Lithium-ion secondary battery is currently the battery system with the strongest comprehensive performance. It has the advantages of high working voltage, specific power, large specific energy, good cycle performance, no memory effect and environmental friendliness. It is widely used in notebook computers, mobile communications, digital Portable electronic devices such as video cameras. In recent years, with the rise of the electric vehicle industry and the field of large-scale energy storage, higher requirements have been placed on the performance of lithium-ion batteries. Not only do lithium-ion batteries need to have high energy density and power density, but they also need to have high safety performance. , Long service life and so on. However, at present, lithium-ion ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0562H01M10/0525
CPCH01M10/0525H01M10/0562H01M2300/0071Y02E60/10
Inventor 孔庆霞毕研超刘强刘冲
Owner 淄博佳润纺织有限公司
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