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Preparation method of porous TiN electrode material of AMTEC

An electrode material and raw material technology, applied in the field of porous TiN electrode material preparation, can solve problems such as poor practicability, and achieve the effects of good practicability, guaranteed activity and stability, and low preparation cost

Inactive Publication Date: 2019-06-28
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of the poor practicability of the existing porous TiN electrode material preparation method, the present invention provides a preparation method of AMTEC porous TiN electrode material

Method used

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  • Preparation method of porous TiN electrode material of AMTEC
  • Preparation method of porous TiN electrode material of AMTEC
  • Preparation method of porous TiN electrode material of AMTEC

Examples

Experimental program
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Effect test

Embodiment 1

[0027] (1) Weigh 20ml of the raw material butyl titanate and dissolve it in 200mL of absolute ethanol to prepare a solution with a concentration of 10vol%. Add this solution dropwise to vigorously stirred distilled water. The molar ratio of butyl titanate to distilled water is: Ti:H 2 O=1:150, butyl titanate is hydrolyzed to generate TiO 2 Precipitate.

[0028] (2) TiO generated by filtration 2 The precipitate was washed twice with distilled water and then twice with absolute ethanol, and then dried in a drying oven at 120° C. for 12 hours. After drying, the precipitate was calcined in a calcination furnace at a temperature of 700°C and a calcination time of 6 hours to obtain anatase nano-TiO 2 Powder. The obtained powder was placed in a quartz boat and nitrided in a tube furnace with a nitriding temperature of 1000°C and a nitriding time of 5 hours. After nitriding the powder, it was cooled to room temperature under the protection of ammonia gas to obtain nano-TiN powder...

Embodiment 2

[0037] (1) Weigh 25ml of the raw material butyl titanate and dissolve it in 200mL of absolute ethanol to prepare a solution with a concentration of 12.5vol%. Add this solution dropwise to vigorously stirred distilled water. The molar ratio of butyl titanate to distilled water is: Ti:H 2 O=1:150, butyl titanate is hydrolyzed to generate TiO 2 Precipitate.

[0038] (2) TiO generated by filtration 2 The precipitate was washed 5 times with distilled water and then 5 times with absolute ethanol, and then dried in an oven at 80°C for 8 hours. After drying, the precipitate was calcined in a calcination furnace at a temperature of 300°C and a calcination time of 2 hours to obtain anatase nano-TiO 2 Powder. The obtained powder was placed in a quartz boat and nitrided in a tube furnace at a nitriding temperature of 800° C. and a nitriding time of 2 hours. After nitriding the powder, it was cooled to room temperature under the protection of ammonia gas to obtain nano-TiN powder.

...

Embodiment 3

[0047] (1) Weigh 30ml of the raw material butyl titanate and dissolve it in 200mL of absolute ethanol to prepare a solution with a concentration of 15vol%. This solution was added dropwise to vigorously stirred distilled water, and butyl titanate was hydrolyzed to generate TiO 2 , finally controlling the molar ratio of butyl titanate to distilled water: Ti:H 2 O=1:150.

[0048] (2) After filtering the precipitate generated by hydrolysis, wash twice with distilled water, then wash twice with absolute ethanol, then dry at 100°C for 10h, and finally burn at 500°C for 4h in a calciner to obtain anatase Nano-TiO 2 Powder. Nano TiO 2 Put the powder into a quartz boat, and use ammonia as a reducing agent in a tubular atmosphere furnace at 1500°C for 3 hours of nitriding. Under the protection of ammonia, cool to room temperature to obtain nano-TiN powder.

[0049] (3) Use 400 mesh, 800 mesh, 1200 mesh, and 2000 mesh sandpaper to treat the surface of the BASE tube uniformly. A BA...

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Abstract

The invention discloses a preparation method of a porous TiN electrode material of an AMTEC, and is used for solving the technical problem that an existing preparation method of the porous TiN electrode material is poor in practicability. According to the technical scheme, the method comprises the steps: dissolving butyl titanate in absolute ethyl alcohol, and adding the obtained mixed solution dropwise into distilled water which is stirred violently to generate precipitates; performing the washing, drying, calcining and high-temperature nitridation of the precipitates to obtain a nano TiN material; performing the surface treatment of a BASE tube, assembling TiN active electrode materials on a cathode and an anode of the BASE tube after surface treatment by adopting a silk-screen printingmethod, and finally heating the BASE tube to obtain the porous electrode of the AMTEC. According to the invention, the method does not employ hydrogen in the preparation process, is simple, is low inpreparation cost, achieves the safe preparation of large-batch coating materials, guarantees the activity and the stability of the electrodes, and is good in practicality.

Description

technical field [0001] The invention relates to a method for preparing a porous TiN electrode material, in particular to a method for preparing an AMTEC porous TiN electrode material. Background technique [0002] Alkali metal thermoelectric converter, referred to as AMTEC, is a thermoelectric energy direct conversion device with β"alumina solid electrolyte as ion selective permeation membrane and liquid alkali metal or gaseous alkali metal as working fluid. The applicable heat source temperature range is 900-1300K. Theoretically, the thermoelectric conversion efficiency can reach 30% to 40%. AMTEC is suitable for various forms of heat sources such as nuclear energy, fossil energy, and solar energy. It is a thermoelectric energy with simple structure, reliable operation, high power density, and high efficiency and cleanliness. Conversion device. No matter on the ground or in space, it has a good application prospect. The main components of AMTEC are: BASE, electrode, current...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01G9/21
Inventor 樊慧庆张明昌贾宇欣赵楠文昀胡彬李华江新彪
Owner NORTHWESTERN POLYTECHNICAL UNIV
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