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Nanotube NiCo2S4@titanium carbide composite material and preparation method and application thereof

A composite material, titanium carbide technology, applied in titanium carbide, chemical instruments and methods, carbides, etc., can solve problems such as poor specific capacitance and cycle performance

Inactive Publication Date: 2020-11-10
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to overcome the shortcoming of above-mentioned prior art, provide nanotubular NiCo 2 S 4 @Titanium carbide composite material and its preparation method and application; to solve NiCo 2 S 4 And titanium carbide used alone as an electrochemical material has defects, resulting in poor specific capacitance and cycle performance

Method used

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  • Nanotube NiCo2S4@titanium carbide composite material and preparation method and application thereof

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preparation example Construction

[0034] The invention discloses a nanotubular NiCo 2 S 4 @Titanium carbide composite material and its preparation method and application, the method specifically includes the following steps:

[0035] Step 1, prepare Ti 3 AlC 2 Ceramic powder

[0036] (1) Take TiC powder, Ti powder and Al powder with a total amount of 100g, wherein the molar ratio of the three is TiC:Ti:Al=2:1:1.2, to obtain the mixture A;

[0037] (2) According to the mass ratio of 1:3:1, weigh the mixture A, grinding medium (zirconia ball stone) and ball milling aid (absolute ethanol) in a polytetrafluoroethylene ball mill tank, and perform ball milling at a speed of 350r / min, the ball milling time is 4h, and the powder is obtained after ball milling;

[0038] (3) The obtained powder with uniform particle size is dried at a drying temperature of 40° C. for 24 hours. After drying, the vacuum pressureless sintering process is used for sintering, and the heating system is proposed: the heating rate is 8°C...

Embodiment 1

[0050] Step 1, Ti 3 AlC 2 Preparation of ceramic powder

[0051] (1) Take TiC powder, Ti powder and Al powder that total amount is 100g, wherein the molar ratio of the three is TiC:Ti:Al=2:1:1.2;

[0052] (2) Then weigh the mixed material, grinding medium (zirconia ball stone) and ball milling aid (absolute ethanol) according to the mass ratio of 1:3:1 in a polytetrafluoroethylene ball mill tank, and perform ball milling at a speed of 350r / min, ball milling time is 4h;

[0053] (3) Finally, the obtained uniform powder is dried at a drying temperature of 40° C. for 24 hours. After drying, the vacuum pressureless sintering process is used for sintering, and the heating system is proposed: the heating rate is 8°C / min before 900°C, and the temperature is raised at 6°C / min after 900°C. The highest sintering temperature is 1350°C, and at the highest temperature Keep warm for 100min. Cool in the furnace, high-energy ball mill the product for 2 hours, pass through a 200-mesh sie...

Embodiment 2

[0066] Step 1, Ti 3 AlC 2 Preparation of ceramic powder

[0067] (1) Take TiC powder, Ti powder and Al powder that total amount is 100g, wherein the molar ratio of the three is TiC:Ti:Al=2:1:1.2;

[0068] (2) Then weigh the mixed material, grinding medium (zirconia ball stone) and ball milling aid (absolute ethanol) according to the mass ratio of 1:3:1 in a polytetrafluoroethylene ball mill tank, and perform ball milling at a speed of 350r / min, ball milling time is 4h;

[0069] (3) Finally, the obtained uniform powder is dried at a drying temperature of 40° C. for 24 hours. After drying, the vacuum pressureless sintering process is used for sintering, and the heating system is proposed: the heating rate is 8°C / min before 900°C, and the temperature is raised at 6°C / min after 900°C. The highest sintering temperature is 1350°C, and at the highest temperature Keep warm for 100min. Cool in the furnace, high-energy ball mill the product for 2 hours, pass through a 200-mesh sie...

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Abstract

The invention discloses a nano tubular NiCo2S4@titanium carbide composite material and a preparation method and application thereof. The nano material takes nickel chloride hexahydrate as a nickel source, takes cobalt chloride hexahydrate as a cobalt source, and employs a two-step hydrothermal method. The method comprises the steps: preparing a nano tubular precursor by a first hydrothermal method, wherein at the moment, the two materials are compounded together by the precursor; vulcanizing the precursor through secondary hydrothermal treatment, wherein the material compounds Ti3C2 of a single sheet layer with hollow tubular NiCo2S4 for the first time to prepare a NiCo2S4@titanium carbide composite material, and the NiCo2S4@titanium carbide composite material is applied to research of electrochemical performance of a supercapacitor, and loading modified Ti3C2 on a NiCo2S4 hollow tube to provide an additional electron transmission path, thereby improving the electron transmission efficiency. Experiments show that compared with a single electrode material, the NiCo2S4 and titanium carbide composite electrode material has more excellent specific capacitance and cycle performance.

Description

【Technical field】 [0001] The invention belongs to the technical field of electrode materials, in particular to a nanotube NiCo 2 S 4 @Titanium carbide composite materials and their preparation methods and applications. 【Background technique】 [0002] With the scarcity of traditional fossil energy and the sharp deterioration of the environment around the world, advanced energy storage systems are urgently needed, and supercapacitors, as a new type of energy storage device, have attracted a lot of research attention. With the deepening of research on supercapacitors, the demand for electrode materials is more diverse and wider. Among them, transition metal carbide nanosheets (MXene) were obtained for the first time in 2011 by selectively etching layer A in the ternary layered compound material MAX. [0003] Two-dimensional layered MXene materials have great application potential in the field of energy storage due to their higher electronic conductivity and stronger ability ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30C01G53/00C01B32/921B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G53/006C01P2004/03C01P2004/04C01P2004/13C01P2004/20C01P2004/80C01P2006/40C01B32/921H01G11/24H01G11/30Y02E60/13
Inventor 武文玲刘恬甜赵春辉牛冬娟赵婷秦毅方园朱建锋
Owner SHAANXI UNIV OF SCI & TECH
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