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Preparation method and application of three-dimensional multi-dimension porous crystal titanium carbide

A titanium carbide, multi-size technology, applied in the direction of titanium carbide, carbide, electrical components, etc., can solve the problems of easy stacking of two-dimensional crystal titanium carbide, low mass capacitance, etc., and achieve abundant reserves, high safety, and low price. Effect

Active Publication Date: 2018-01-30
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing two-dimensional crystal titanium carbide is easy to stack, especially when the mass of the material is large, and the mass specific capacitance is low, and to provide a preparation method and application of a three-dimensional multi-size porous crystal titanium carbide

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  • Preparation method and application of three-dimensional multi-dimension porous crystal titanium carbide
  • Preparation method and application of three-dimensional multi-dimension porous crystal titanium carbide

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specific Embodiment approach 1

[0039] Specific implementation mode 1: This implementation mode is a preparation method of three-dimensional multi-size pore crystal titanium carbide, which is specifically completed according to the following steps:

[0040] 1. Preparation of two-dimensional layered titanium carbide nanosheets:

[0041] ①. Add lithium fluoride to hydrochloric acid with a concentration of 6mol / L-12mol / L, and then magnetically stir for 5min-10min at a stirring speed of 300r / min-500r / min to obtain solution A;

[0042] The volume ratio of the mass of lithium fluoride described in step 1. to concentration of hydrochloric acid of 6mol / L~12mol / L is (1g~3g):20mL;

[0043] ②. Add Ti to solution A in 3 to 15 times under the conditions of ice water bath and stirring speed of 200r / min to 1000r / min 3 AlC 2 powder, stirred to Ti 3 AlC 2 Disperse the powder evenly in solution A, then magnetically stir for 24h-72h at a temperature of 30°C-50°C and a stirring speed of 100r / min-500r / min to obtain solution ...

specific Embodiment approach 2

[0065] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the mass of lithium fluoride described in step one ① and the volume ratio of the hydrochloric acid that concentration is 6mol / L~12mol / L are (1g~1.5g ): 20mL. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0066] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the mass of lithium fluoride described in step 1. and the concentration are 6mol / L~12mol / L The volume ratio of hydrochloric acid is ( 1.5g~3g): 20mL. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method and application of three-dimensional multi-dimension porous crystal titanium carbide, relates to a preparation method and application of crystal titanium carbide, and aims to solve the problem that existing two-dimensional crystal titanium carbide is liable to stack, and especially has low mass specific capacitance when the mass is relatively large. Themethod comprises the following steps: I, preparing a two-dimensional layered titanium carbide nanosheet; II, calcining to obtain the three-dimensional multi-dimension porous crystal titanium carbide.The mass specific capacitance of the three-dimensional multi-dimension porous crystal titanium carbide prepared by the method is about 129F / g when the mass is 10mg. By adopting the preparation method, the three-dimensional multi-dimension porous crystal titanium carbide can be obtained.

Description

technical field [0001] The invention relates to a preparation method and application of crystal titanium carbide. Background technique [0002] Two-dimensional layered titanium carbide Ti 3 C 2 T x (T represents -O, -OH, -F, -Cl and other functional groups) is a new type of two-dimensional crystalline carbide, due to its excellent electrical conductivity, good surface hydrophilicity, high bending strength and rich surface Chemical properties, have been reported as electrode materials for supercapacitors and lithium-ion batteries and have received extensive attention. As a two-dimensional material, due to the strong attraction between different sheets, it is very easy to stack, which greatly limits the rapid transport of electrolyte ions in the material, seriously reduces the supercapacitor performance of the material, and thus loses Monodisperse two-dimensional layered materials have excellent properties of high specific surface area. For example, the mass specific capa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/921H01G11/24H01G11/30H01M4/587
CPCY02E60/10Y02E60/13
Inventor 武立立张喜田王鹤儒张慧杰
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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