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Solid electrolyte material and preparation method thereof
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A solid electrolyte and raw material technology, applied in the direction of solid electrolyte, electrolyte, non-aqueous electrolyte, etc., can solve problems such as explosive, flammable, and liquid leakage
Active Publication Date: 2016-11-16
淄博佳润纺织有限公司
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[0006] The purpose of the present invention is to provide a solidelectrolyte material and a preparation method thereof. The solid electrolyte material provided by the present invention replaces the liquid electrolyte of lithium ion batteries, solves the safety problems of lithium ion liquid battery leakage, explosion, and flammability, and is beneficial to Miniaturization of batteries and diversification of product shapes
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Embodiment 1-3
[0054] According to the general formula of chemical composition Li 6+x Al y (La z A 3-z )Zr 2 o 12 Ingredients, wherein A is at least one selected from Ca, Sr, Y, and Ba, and satisfies 0≤x≤2, 0<y≤1, 2≤z≤3, and the solid of this embodiment is prepared through the following steps Electrolyte material:
[0055] (1) Using analytically pure chemical reagent Li 2 CO 3 、Al 2 o 3, La 2 o 3 , CaCO 3 、BaCO 3 , ZrO 2 , SrCO 3 , Y 2 o 3 as raw material, according to Li 6+x Al y (La z A 3-z )Zr 2 o 12 The molar ratio of the general chemical formula, wherein 0≤x≤2, 0<y≤1, 2≤z≤3. Put the prepared raw materials into a 50KG horizontal ceramicball mill for ball milling for 16 hours;
[0056] (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 900 ° C for 4 hours at a heating rate of 4 ° C / min to obtain a sintered block;
[0057] (3) Cross 60 mesh sieves after the burnt block afte...
Embodiment 4-7
[0065] According to the general formula of chemical composition Li 6+x Al y La 3 (Zr n B 2-n )O 12 Ingredients, wherein B is at least one selected from Ti, Nb, Ta, Sb, V, and satisfies 0≤x≤2, 0<y≤1, 1≤n<2, using the same method as in Example 1-3 The preparation method prepares the solid electrolyte material.
[0066] See Table 2 for the chemical formulas and test results of the solid electrolyte materials in Examples 4-7.
[0067] The chemical formula and test result thereof of the solid electrolyte material of table 2 embodiment 4-7
[0068]
Embodiment 8-12
[0070] According to the general formula of chemical composition Li 6+x Al y (La z A 3-z )(Zr n G 2-n )O 12 Ingredients, wherein 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, 0
[0071] See Table 3 for the chemical formulas and test results of the solid electrolyte materials in Examples 8-12.
[0072] The chemical formula and test result thereof of the solid electrolyte material of table 3 embodiment 8-12
[0073]
[0074]
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Abstract
The invention relates to a solidelectrolyte material and a preparation method thereof. The chemical composition is Li<6+x>Al<y>(La<z>A<3-z>)(Zr<n>G<2-n>)O<12+alpha>wt% 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 smaller than or equal to 2 and greater than or equal to 0; y is smaller than or equal to 1 and greater than or equal to 0; z is smaller than or equal to 3 and greater than or equal to 2; n is smaller than or equal to 2 and greater than or equal to 1; and alpha is smaller than or equal to 3 and greater than or equal to 0. The safety problems that a lithium-ion liquid battery leaks liquid and is flammable, explosive and the like are solved; battery miniaturization and product shape diversification are facilitated; the process route is simple; massive production is easily to implement; a sample is low in sintering temperature and short in heat preservation time; volatilization of lithium ions is reduced; and the sintering cost is greatly reduced.
Description
technical field [0001] The invention relates to a solidelectrolyte material 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 batteries cannot meet people's performance requirements for nex...
Claims
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