The invention relates to a titanium aluminum carbon and titanium carbide composite hydrogen storage material and a preparation method thereof

Technical scheme of the invention are as follows: a carbon titanium aluminum and titanium carbide composite hydrogen storage material, its characteristic is: described in the composite hydrogen storage material is composed of the following components: titanium aluminum carbon for ternary compound, described the specific of Ti3AlC2 or Ti2AlC, titanium carbide described as TiCx, of which 0.48 x 0.8 or less, or less composite hydrogen storage materials of titanium aluminum carbon mass ratio of 2% to 15%, the rest for titanium carbide. The preparation method of a titanium-aluminum-carbon and titanium-carbide composite hydrogen storage material has the following characteristics:
(1) raw material preparation: the raw material aluminum powder and titanium carbide powder or titanium aluminum carbon powder and titanium carbide powder required for the preparation of composite hydrogen storage materials are prepared. The titanium aluminum carbon powder is a ternary compound, specifically Ti3AlC2 or Ti2AlC. The titanium carbide powder is a non-stoicometric ratio of TiCx, in which 0.48≤x≤0.8. When the raw material is aluminum powder and titanium carbide powder, the mass ratio of aluminum powder is 0.3% to 3%, and the rest is titanium carbide powder. When the raw materials are ti-al carbon powder and titanium carbide powder, the mass ratio of ti-al carbon powder is 2%-15%, and the rest is titanium carbide powder.
(2) raw material mixing: mix aluminum powder with titanium carbide powder or titanium aluminum carbon powder with titanium carbide powder evenly;
(3) ball mill: the aluminum powder and titanium carbide powder or the mixed powder of titanium carbide powder and titanium carbide powder are grinded for 3-8 hours in a high-energy ball mill;
(4) press molding: press the mixed powder into the desired shape;
(5) sintering: the pressing molding raw materials are placed in the sintering furnace. When the raw materials are aluminum powder and titanium carbide powder, they are heated to 950-1200℃ and kept for 3-8 hours. When the raw materials are titanium aluminum carbon powder and titanium carbide powder, they are heated to 600-950℃ and kept for 3-8 hours.
Compared with the existing hydrogen storage materials and technologies, the ti-al carbon and titanium carbide composite hydrogen storage material prepared by the invention and its preparation method have the following advantages:
1. The preparation of titanium aluminum carbon and titanium carbide composite hydrogen storage material, the titanium aluminum carbon compounds of hydrogen diffusion main role is to provide channel, promote the diffusion of hydrogen in the hydrogen storage material, and titanium carbide is the main carrier of hydrogen storage, the composite of the proceeds of the composite hydrogen storage material has both good store hydrogen thermal dynamic performance, and high hydrogen storage capacity; The test shows that the hydrogen storage capacity of the composite hydrogen storage material reaches 2.6%. Wt-3.6%. Wt, and the hydrogen storage and discharge rate is 1-3 times higher than that of the pure titanium carbide hydrogen storage material.
2. The composite hydrogen storage material has excellent chemical stability and anti-oxidation ability, and has high anti-impurity gas poisoning ability and cycling stability during hydrogen storage;
3. The preparation method is simple, the raw materials are abundant and the price is low.
The invention relates to a preparation method of ti-al carbon/copper electronic paste, which solves the problems of easy oxidation and agglomeration of copper electronic paste.
The technical scheme of the invention is a preparation method of ti-al carbon/copper electronic paste, which is implemented in the following steps:
Step 1: the mixed powder of spherical copper powder, flake copper powder and Ti3AlC2 powder was prepared and ground.
Step 2. Soak the mixed powder after grinding in step 1 in an ascorbic acid solution, and then dry it in a vacuum drying chamber.
In step 3, the terephthalol, ethyl cellulose, ethyl acetate, polyether antifoaming agent, aminopropyl triethoxy silane, and ascorbic acid were mixed evenly according to the volume ratio of 60 ~ 80:6 ~ 10:6 ~ 15:2 ~ 5:2 ~ 5:1 ~ 2, heated in a water bath until completely dissolved, and the organic carrier was obtained.
In step 4, the mixed powder obtained in step 2 and the organic carrier obtained in step 3 were mixed evenly according to the mass ratio of 60 ~ 75:25 ~ 40, that is, the ti-al carbon/copper electronic paste was obtained.

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