a mote 2 /mxene composite material and preparation method thereof

A composite material and potassium ion technology, applied in the field of MoTe2/MXene composite material and its preparation, can solve the problems of small interlayer spacing and the inability to obtain the effect of rapid ion migration, so as to increase the interlayer spacing, prevent pulverization and shedding, increase the The effect of specific surface area

Active Publication Date: 2021-09-28
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its layer spacing is small, and the surface functional groups have certain adsorption properties, so it cannot achieve the ideal fast ion migration effect when used alone.

Method used

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  • a mote <sub>2</sub> /mxene composite material and preparation method thereof
  • a mote <sub>2</sub> /mxene composite material and preparation method thereof
  • a mote <sub>2</sub> /mxene composite material and preparation method thereof

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preparation example Construction

[0037] The invention provides a MoTe 2 The preparation method of / MXene composite material, wherein MoTe 2 For the synthesis method, please refer to:

[0038] "A flake semi-metallic MoTe 2 : Cu and flake semimetal MoTe 2 : Preparation method and process of Cu / RGO”

Embodiment 1

[0040] A MoTe 2 The preparation method of / MXene composite material specifically comprises the following steps:

[0041] (1) Take 300mg MXene (Ti 3 C 2 T x ) into ethylene glycol, magnetically stirred for 3 hours, and configured into a 10mg / ml dispersion;

[0042] (2) Add 0.1mol H 8 Mo 4 N 2 o 13 2H 2 O and 0.3mol potassium tellurite were added to the dispersion described in step (1), and stirred for 8 hours to obtain a suspension;

[0043] (3) Transfer the suspension obtained in step (2) into a reaction kettle with a capacity of 50ml, seal it and place it in an oven, heat it to 120°C, keep it warm for 12h, and then cool it down to room temperature;

[0044] (4) The product obtained in step (3) was centrifuged at 4000r / min for 5 minutes, and washed 3 times alternately with deionized water and absolute ethanol;

[0045] (5) Dry the product obtained in step (4) in a vacuum drying oven at a drying temperature of 60°C and a drying time of 10 hours to obtain MoTe 2 / MXene...

Embodiment 2

[0049] A MoTe 2 The preparation method of / MXene composite material specifically comprises the following steps:

[0050] (1) Take 900mg MXene (Ti 3 C 2 T x ) into ethylene glycol, magnetically stirred for 4 hours, and configured into a 30mg / ml dispersion;

[0051] (2) 0.3mol H 8 Mo 4 N 2 o 13 2H 2 O and 1.5mol potassium tellurite were added in the dispersion described in step (1), and stirred for 15 hours to obtain a suspension;

[0052] (3) Transfer the suspension obtained in step (2) into a reaction kettle with a capacity of 50ml, seal it and place it in an oven, heat it to 160°C, keep it warm for 18h, and then cool it to room temperature;

[0053] (4) The product obtained in step (3) was centrifuged at 6000r / min for 7 minutes, and washed 3 times alternately with deionized water and absolute ethanol;

[0054] (5) Dry the product obtained in step (4) in a vacuum drying oven at a drying temperature of 60°C and a drying time of 12 hours to obtain MoTe 2 / MXene composi...

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Abstract

The invention discloses a MoTe 2 / MXene electrode material and preparation method thereof, comprising the following steps: (1) MXene is added to the dispersant, stirred for 3-6 hours, and prepared into a dispersion with a concentration of 10-50mg / ml; (2) molybdenum source material Add the tellurium source material to the above dispersion at a molar ratio of 1:3-8, and stir for 8-20 hours to obtain a suspension; (3) heat the suspension obtained in step (2) to 120-200°C, Insulated for 12‑24h, cooled, centrifuged, washed, dried to obtain MoTe 2 / MXene composites. with pure MoTe 2 Compared with the material, the present invention will MoTe 2 Load on MXene, get MoTe 2 / MXene composite material, the composite material uses MXene as a buffer substrate, inhibits the huge volume expansion during the cycle, shows good cycle stability and excellent rate performance, and is an ideal negative electrode material for potassium ion batteries. The development and application of potassium ion batteries are of great value.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, in particular to a MoTe 2 / MXene composite material and its preparation method. Background technique [0002] In recent years, with the rapid development of science and technology, it has also brought energy and environmental problems to the society. With the continuous development of modern society, coal, oil and other energy sources continue to be consumed. At the same time, it has also caused serious pollution to the environment. As a result, the two major problems of energy crisis and environmental pollution have become increasingly prominent. Traditional fossil energy is far from meeting the needs of human beings to build a green, environmentally friendly, clean and sustainable energy society. Therefore, it is of great practical significance to adjust the existing energy structure and develop recyclable and environmentally friendly new energy sources. New energy includes renew...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/136H01M10/054
CPCH01M4/136H01M4/362H01M4/58H01M4/581H01M10/054Y02E60/10
Inventor 张业龙徐晓丹周健文孙宏阳邱振平
Owner WUYI UNIV
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