Method for preparing alumina ceramic tube used for sodium-nickel battery

A technology of alumina ceramic tube and sodium-nickel battery, which is applied in the field of preparation of β-Al2O3 alumina solid electrolyte material, can solve the problems of incompetence, poor current density and poor charging and discharging effect, etc., and achieves increasing current density and increasing current. Density and collection effect, effect of increasing strength

Inactive Publication Date: 2013-04-03
宁夏绿聚能源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the manufacturing process and raw material ratio of the currently used electrolyte ceramic tube, the current density and charge and discharge effect are not good.
There is currently no way to overcome this defect

Method used

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Embodiment Construction

[0013] A method for preparing an alumina ceramic tube used in a sodium-nickel battery, the method is first doping MgO and MnO in alumina powder with a purity of 99% 2 Additives, then the three raw materials are mixed, ground and calcined, then ground and hot grouted to prepare moldings, and finally molded to prepare molds, the mold size is 35*35*280mm, and the geometric groove is set in the side extension direction, and the molding is sintered. The sintering temperature is 1700-1900°C;

[0014] The above-mentioned MgO doping ratio is 1kg of MgO additive per 100 kg of alumina, MnO 2 Additive doping ratio is per 100 kg of alumina doped with MnO 2 Additive 0.5kg;

[0015] In the above hot grouting method, the temperature of the slurry is maintained at 60°C, and the pH of the slurry is 3.5;

[0016] The geometric grooves used in the above-mentioned preparation mold are geometric grooves, the depth of which is 3 mm, the grooves extend along the axial direction, and the grooves a...

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Abstract

The invention relates to a method for preparing a beta-Al2O3 aluminum oxide solid electrolyte material used for a sodium-nickel battery, and in particular relates to the method for preparing an alumina ceramic tube used for the sodium-nickel battery. The method comprises the following steps of: firstly mixing MgO and MnO2 additives with alumina powder with purity reaching 99%, then blending, grinding and calcining the three raw materials, regrinding and thermally grouting for preparing molding, and finally preparing a die by the molding. The size of the die is 35*35*280mm, geometric-shaped grooves are arranged on sides in the extending direction, the molding is sintered, and the sintering temperature is 1700-1900 DEG C. The method is unique, the electric current density, A current collection effect and the strength of the ceramic tube can be increased.

Description

technical field [0001] The present invention relates to a kind of β-Al for sodium-nickel battery 2 o 3 The invention relates to a method for preparing an alumina solid electrolyte material, in particular to a method for preparing an alumina ceramic tube used in a sodium-nickel battery. Background technique [0002] Sodium-nickel batteries were first invented in the mid-1960s. Sodium and nickel are used as cathode and anode respectively, and Beta-alumina ceramics play the dual role of separator and electrolyte at the same time. However, the currently used electrolyte ceramic tubes have poor current density and charging and discharging effects due to the manufacturing process and the ratio of the prepared raw materials. There is currently no way to overcome this drawback. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a method for preparing an alumina ceramic tube used in a sodium-nicke...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622
Inventor 余正涛
Owner 宁夏绿聚能源股份有限公司
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