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Preparation method of Ba ion doped Na-beta'-Al2O3 solid electrolyte and solid electrolyte prepared by using same

A technology of solid electrolytes and ions, which is applied in the field of preparation of Na-β″-Al2O3 solid electrolytes, preparation methods and solid electrolytes prepared by this method, can solve problems limited to the theoretical calculation stage, and achieve a narrow range of particle size distribution , the composition is uniform, and the effect of improving the conductivity

Inactive Publication Date: 2011-01-12
张冰青 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] However, the above research is limited to the stage of theoretical calculation
According to the inventor's understanding, there is no Na-β"-Al doped with BaO 2 o 3 There have been no reports on the preparation method of solid electrolyte and its actual performance research, and there is no Na-β″-Al doped with BaO in industrial production practice. 2 o 3 Solid electrolytes are used in various conventional fields

Method used

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  • Preparation method of Ba ion doped Na-beta'-Al2O3 solid electrolyte and solid electrolyte prepared by using same
  • Preparation method of Ba ion doped Na-beta'-Al2O3 solid electrolyte and solid electrolyte prepared by using same
  • Preparation method of Ba ion doped Na-beta'-Al2O3 solid electrolyte and solid electrolyte prepared by using same

Examples

Experimental program
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Effect test

Embodiment 1

[0050] NaNO 3 , Al(NO 3 ) 3 9H 2 O as raw material, LiNO 3 As a stabilizer, Ba(NO 3 ) 2 As a regulator, according to the chemical formula of the intermediate target product is Na 2 O·5Al 2 o 3 , Li 2 O·5Al 2 o 3 and BaO·5Al 2 o 3 The stoichiometric ratio of metal elements, weighed 17.1601 grams of NaNO 3 and 378.6915 grams of Al(NO 3 ) 3 9H 2 O; Weigh 2.1574 g LiNO 3 and 58.6921 grams of Al(NO 3 ) 3 9H 2 O; Weigh 4.0887 grams of Ba (NO 3 ) 2 and 58.6911 grams of Al(NO 3 ) 3 9H 2 O, each group of salts was dissolved in deionized water as a solvent to prepare three solutions of 0.5 mol / L respectively. In the above three solutions, add C 6 h 8 o 7 ·H 2 O127.2801 grams, 19.7267 grams, 18.0825 grams, according to 1wt% of the sum of all metal salts in the dispersant and various solutions, add polyethylene oxide (PEO-600) 2.3218 grams, 0.3548 grams, 0.3741 grams respectively, respectively Adjust the pH=3 with diamine, and carry out stirring and mixing. T...

Embodiment 2

[0053] NaNO 3 , Al(NO 3 ) 3 9H 2 O as raw material, LiNO 3 As a stabilizer, Ba(NO 3 )2 As a regulator, according to the chemical formula of the intermediate target product is Na 2 O·5Al 2 o 3 , Li 2 O·5Al 2 o 3 and BaO·5Al 2 o 3 The stoichiometric ratio of metal elements, weighed 17.1601 grams of NaNO 3 and 378.6915 grams of Al(NO 3 ) 3 9H 2 O; Weigh 2.1574 g LiNO 3 and 58.6921 grams of Al(NO 3 ) 3 9H 2 O, weighed 4.0887 grams of Ba (NO 3 ) 2 and 58.6911 grams of Al(NO 3 ) 3 9H 2 O, each group of salts was dissolved in deionized water as a solvent to prepare three solutions of 0.5 mol / L respectively. In the above three solutions, add C 6 h 8 o 7 ·H 2 O84.8534 gram, 13.1511 gram, 12.0550 gram; Press the 0.2wt% of the sum of all metal salts in the dispersant and various solutions, add polyethylene oxide (PEO-600) 0.4644 gram, 0.0710 gram, 0.0748 gram respectively, use respectively Ethylenediamine was used to adjust the pH to 7, and stirred and mixed ...

Embodiment 3

[0056] NaNO 3 , Al(NO 3 ) 3 9H 2 O as raw material, LiNO 3 As a stabilizer, Ba(NO 3 ) 2 As a regulator, according to the chemical formula of the intermediate target product is Na 2 O·5Al 2 o 3 , Li 2 O·5Al 2 o 3 and BaO·5Al 2 o 3 The stoichiometric ratio of metal elements, weighed 17.1601 grams of NaNO 3 and 378.6915 grams of Al(NO 3 ) 3 9H 2 O; Weigh 2.1574 g LiNO 3 and 58.6921 grams of Al(NO 3 ) 3 9H 2 O; Weigh 4.0887 grams of Ba (NO 3 ) 2 and 58.6911 grams of Al(NO 3 ) 3 9H 2 O. Dissolve each group of salts in deionized water as a solvent to prepare three solutions of 3 mol / L. In the above three solutions, add C 6 h 8 o 7 ·H 2 O254.5602 grams, 39.4534 grams, 36.1650 grams, according to the 3wt% of the sum of all metal salts in the dispersant and each solution, add polyethylene oxide (PEO-600) 6.9653 grams, 1.0644 grams, 1.1224 grams respectively, respectively Adjust the pH to 1 with the amine, and carry out stirring and mixing. The heating rate...

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Abstract

The invention relates to a preparation method of a Ba ion doped Na-beta'-Al2O3 solid electrolyte and a solid electrolyte prepared by using the same. In the method, a salt containing metal sodium and aluminum is used as a raw material, a salt containing metal lithium or magnesium is used as a stabilizing agent, a salt containing metal barium is especially used as a regulating agent, three precursor powders comprising Na2O.5Al2O3, Li2O.5Al2O3 or MgO.5Al2O3, and BaO.5AL2O3 are respectively prepared by using a sol-gel method, and the target product of (1-3x)Na2O.2xMgO.xBaO.5Al2O3 or (1-3x)Na2O.2xLiO.xBaO.5Al2O3 is prepared, wherein x is greater than 0.02 and smaller than 0.1. Compared with a Na-beta'-Al2O3 solid electrolyte prepared by the conventional method, the Na-beta'-Al2O3 solid electrolyte prepared by the method has the characteristics of higher density, higher strength and higher conductivity, the degradation problem of the solid electrolyte is solved, the service life is prolonged, and thus, the solid electrolyte has wide application prospect.

Description

technical field [0001] The present invention relates to a preparation method of a solid electrolyte and a solid electrolyte prepared by the method, in particular to a Na-β″-Al 2 o 3 A method for preparing a solid electrolyte and a solid electrolyte prepared by the method. Background technique [0002] Solid electrolyte is also known as fast ion conductor, which is characterized by relying on the movement of ions (or vacancies) from one lattice position to an adjacent lattice position to achieve conduction, and its conductivity can reach σ≥10 -2 Ω -1 cm -1 . Among them, Na-β″-Al 2 o 3 (ideal chemical formula Na 2 O·5.33Al 2 o 3 , which is a kind of sodium polyaluminate) is a cationic solid electrolyte, which mainly conducts electricity by the migration of sodium ions. [0003] About Na-β″-Al 2 o 3 The conductive mechanism of the solid electrolyte is known in the prior art in its layered crystal structure, and each unit cell has three spinel layers composed of oxyg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622H01M8/10H01M10/39
CPCY02E60/522Y02E60/523Y02E60/10
Inventor 张冰青张祎晶
Owner 张冰青
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