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Method for preparing Ni-Ti3C2 composite electrocatalyst by hydrothermal method

A technology of electrocatalyst and hydrothermal method, which is applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of poor oxidation resistance, surface catalytic activity and loss of electronic characteristics, etc., to achieve increased contact area, excellent catalytic hydrogen evolution performance, The effect of fast reaction rate

Pending Publication Date: 2022-03-15
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to Ti 3 C 2 Poor oxidation resistance in aqueous solution leads to a large loss of surface catalytic activity and electronic properties, so it is urgent to modify and passivate its surface

Method used

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  • Method for preparing Ni-Ti3C2 composite electrocatalyst by hydrothermal method
  • Method for preparing Ni-Ti3C2 composite electrocatalyst by hydrothermal method
  • Method for preparing Ni-Ti3C2 composite electrocatalyst by hydrothermal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of Ni-Ti by a hydrothermal method 3 C 2 The method for composite electrocatalyst, concrete steps are as follows:

[0028] 1. Take 20 mg Ti 3 C 2 The nanosheets were dispersed into 20 mL of water, and the first homogeneous mixed solution was obtained by ultrasonic treatment; among them, Ti 3 C 2 by Ti 3 AlC 2 The powder was treated with 9 M hydrochloric acid at 35 °C for 48 h, then washed with deionized water to pH 6, and then sonicated at 300 W for 2 h.

[0029] 2. Disperse 237.9 mg of nickel chloride hexahydrate into 10 mL of water, and perform ultrasonic treatment to obtain a uniform second mixed solution;

[0030] 3. Take 176 mg of ascorbic acid and disperse it in 10 mL of water, and perform ultrasonic treatment to obtain a uniform third mixed solution;

[0031] 4. Transfer the first mixed solution to a 100 ml high-temperature and high-pressure reactor. The inner wall of the high-temperature and high-pressure reactor is equipped with a polytetrafl...

Embodiment 2

[0042] Preparation of Ni-Ti by a hydrothermal method 3 C 2 The method for composite electrocatalyst, concrete steps are as follows:

[0043] 1. Take 20 mg Ti 3 C 2 The nanosheets were dispersed into 50 mL of water, and the first mixed solution was obtained by ultrasonic treatment; among them, Ti 3 C 2 by Ti 3 AlC 2 The powder was treated with 9 M hydrochloric acid at 35 °C for 48 h, then washed with deionized water to pH 6, and then sonicated at 300 W for 2 h.

[0044] 2. Disperse 237.9 mg of nickel chloride hexahydrate into 30 mL of water, and perform ultrasonic treatment to obtain a uniform second mixed solution;

[0045] 3. Take 176 mg of ascorbic acid and disperse it into 30 mL of water, and perform ultrasonic treatment to obtain a uniform third mixed solution;

[0046] 4. Transfer the first mixed solution to a 100 ml high-temperature and high-pressure reactor. The inner wall of the high-temperature and high-pressure reactor is equipped with a polytetrafluoroethyle...

Embodiment 3

[0052] Preparation of Ni-Ti by a hydrothermal method 3 C 2 The method for composite electrocatalyst, concrete steps are as follows:

[0053] 1. Take 20 mg Ti 3 C 2 The nanosheets were dispersed into 30 mL of water, and the first mixed solution was obtained by ultrasonic treatment; among them, Ti 3 C 2 by Ti 3 AlC 2 The powder was treated with 9 M hydrochloric acid at 35 °C for 48 h, then washed with deionized water to pH 6, and then sonicated at 300 W for 2 h.

[0054] 2. Disperse 237.9 mg of nickel chloride hexahydrate into 20 mL of water, and perform ultrasonic treatment to obtain a uniform second mixed solution;

[0055] 3. Take 176 mg of ascorbic acid and disperse it into 20 mL of water, and perform ultrasonic treatment to obtain a uniform third mixed solution;

[0056] 4. Transfer the first mixed solution to a 100 ml high-temperature and high-pressure reactor. The inner wall of the high-temperature and high-pressure reactor is equipped with a polytetrafluoroethyle...

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Abstract

The invention belongs to the technical field of preparation of composite electrocatalysts, and adopts the specific technical scheme that a method for preparing a Ni-Ti3C2 composite electrocatalyst by a hydrothermal method specifically comprises the following steps: 1, dispersing nanosheets into water, and carrying out ultrasonic treatment to obtain a first mixed solution; 2, dispersing nickel chloride hexahydrate into water, and performing ultrasonic treatment to obtain a second mixed solution; 3, dispersing ascorbic acid into water, and performing ultrasonic treatment to obtain a third mixed solution; 4, putting the first mixed solution, a certain amount of the second mixed solution and 5ml of the third mixed solution into a high-temperature and high-pressure reaction kettle, and carrying out ultrasonic treatment on the mixed solution to obtain a fourth mixed solution; and 5, centrifuging the fourth mixed solution, precipitating, cleaning with deionized water, dispersing the cleaned precipitate into absolute ethyl alcohol, and drying in vacuum to obtain Ni-Ti3C2 powder, and by adopting a Ti3C2 nanosheet as a substrate, the catalytic efficiency is improved, and a material basis is provided for improvement of electrochemical adsorption and electro-catalytic performance.

Description

technical field [0001] The invention belongs to the technical field of preparing composite electrocatalysts, and relates to a transition metal nickel nanoparticle and two-dimensional Ti 3 C 2 A method for preparing nanosheet composite electrocatalysts, specifically relating to the preparation of Ni-Ti by a hydrothermal method 3 C 2 approach to composite electrocatalysts. Background technique [0002] The increasingly prominent global environmental problems and the rapid growth of energy demand have prompted people to explore new clean energy sources to reduce their dependence on traditional fossil energy sources. Compared with traditional energy sources, hydrogen energy has the advantages of environmental friendliness, high efficiency and renewability, and is considered as an energy source with good application prospects. More importantly, hydrogen, as a capacity carrier, can realize the sustainable conversion and storage of solar and wind energy. Among the many methods...

Claims

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Application Information

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IPC IPC(8): C25B11/091C25B1/04
CPCC25B11/091C25B1/04Y02E60/36
Inventor 张衡王靖坤赵敏
Owner TAIYUAN UNIV OF TECH
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