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Preparation method and application of eggshell membrane derived carbon/MXene/manganese dioxide composite material

A technology of composite materials and manganese dioxide, applied in the direction of carbon preparation/purification, carbon compounds, chemical instruments and methods, etc., can solve the problem of low specific capacitance, achieve good capacitance performance, facilitate promotion, and increase capacitance performance Effect

Active Publication Date: 2020-02-21
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific capacitance of MXene alone as an electrode material is not high. In order to improve its capacitance performance, it is urgent to develop new binary or ternary composite materials containing MXene.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for preparing eggshell membrane-derived carbon / MXene / manganese dioxide composite materials is provided, which specifically includes the following steps:

[0030] 1) soak the egg shell membrane in 1mol / L hydrochloric acid for 3 hours, and clean it with water and isopropanol;

[0031] 2) Soak the cleaned eggshell membrane obtained in step 1) in MXene aqueous solution for 1.5h, and load MXene, wherein the eggshell membrane is 35 parts, MXene is 1 part, water is 900 parts, and MXene is Ti 3 C 2 ;

[0032] 3) Calcining the MXene-loaded eggshell membrane obtained in step 2) at 600° C. for 3 h under a nitrogen atmosphere;

[0033] 4) Add the calcined eggshell membrane-derived carbon / MXene compound obtained in step 3) into a hydrochloric acid solution containing potassium permanganate at a concentration of 0.5mol / L, and perform a hydrothermal reaction to obtain eggshell membrane-derived carbon / MXene MXene / manganese dioxide composite material, including 2 parts of ca...

Embodiment 2

[0036] A method for preparing eggshell membrane-derived carbon / MXene / manganese dioxide composite materials is provided, which specifically includes the following steps:

[0037] 1) soak the duck egg shell membrane in 2mol / L hydrochloric acid for 5h, and clean it with water and isopropanol;

[0038] 2) Soak the cleaned eggshell membrane obtained in step 1) in MXene aqueous solution for 2 hours, and load MXene, wherein the eggshell membrane is 50 parts, MXene is 4 parts, water is 900 parts, and MXene is Ti 3 C 2 ;

[0039] 3) Calcining the MXene-loaded eggshell membrane obtained in step 2) at 550° C. for 4.5 hours under an argon atmosphere;

[0040] 4) Add the calcined eggshell membrane-derived carbon / MXene compound obtained in step 3) into a hydrochloric acid solution containing potassium permanganate at a concentration of 1.2mol / L, and perform a hydrothermal reaction to obtain eggshell membrane-derived carbon / MXene MXene / manganese dioxide composite material, including 4 par...

Embodiment 3

[0043] A method for preparing eggshell membrane-derived carbon / MXene / manganese dioxide composite materials is provided, which specifically includes the following steps:

[0044] 1) soak the egg shell membrane in 1.5mol / L hydrochloric acid for 6h, and wash it with water and isopropanol;

[0045] 2) Soak the cleaned eggshell membrane obtained in step 1) in MXene aqueous solution for 2 hours, load MXene, wherein the eggshell membrane is 40 parts, MXene is 2 parts, water is 500 parts, and MXene is Ti 3 C 2 ;

[0046]3) calcining the MXene-loaded eggshell membrane obtained in step 2) at 500° C. for 5 h under a nitrogen atmosphere;

[0047] 4) Add the calcined eggshell membrane-derived carbon / MXene compound obtained in step 3) into a hydrochloric acid solution containing potassium permanganate at a concentration of 1.5 mol / L, and perform a hydrothermal reaction to obtain eggshell membrane-derived carbon / MXene MXene / manganese dioxide composite material, including 5 parts of calcin...

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Abstract

The invention discloses a preparation method and application of an eggshell membrane derived carbon / MXene / manganese dioxide composite material. The preparation method comprises the following steps: 1)treating eggshell membranes with an acid, and cleaning the eggshell membranes with water and isopropanol; 2) loading MXene on the eggshell membrane treated in the step 1); 3) calcining and carbonizing the eggshell membrane loaded with MXene in an inert gas atmosphere; and 4) adding an obtained calcined eggshell membrane derived carbon / MXene compound into a hydrochloric acid solution containing potassium permanganate, and carrying out hydrothermal reaction to obtain the eggshell membrane derived carbon / MXene / manganese dioxide composite material. According to the invention, the eggshell membrane with a three-dimensional porous structure is used for effectively loading MXene and manganese dioxide, and aggregation of MXene and manganese dioxide is reduced; the obtained composite material canbe cut into any shape and can be directly used as an electrode material of a supercapacitor, the capacitance performance is good, the preparation process is simple, large-scale production is easy to realize, and the application prospect in the field of new energy devices is promising.

Description

technical field [0001] The invention belongs to the field of functional materials and composite materials, and in particular relates to a preparation method and application of an eggshell membrane derived carbon / MXene / manganese dioxide composite material. Background technique [0002] With the rapid development of electric vehicles and wearable electronic products, the research and development of high-performance energy storage devices has received more and more attention in various countries around the world. Supercapacitors, also known as electrochemical capacitors, are a new type of energy storage device between secondary batteries and ordinary capacitors. As one of the important energy storage devices, it has the advantages of high energy density, large work density, and long cycle life. Electrodes, current collectors, electrolytes, and separators constitute supercapacitors, and the electrode material is the most critical factor affecting the performance and production ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/921C01B32/914C01B32/05C01G45/02H01G11/24H01G11/26H01G11/30H01G11/32H01G11/44H01G11/46H01G11/86
CPCC01B32/921C01B32/914C01B32/05C01G45/02H01G11/30H01G11/32H01G11/44H01G11/46H01G11/26H01G11/24H01G11/86C01P2006/40Y02E60/13
Inventor 李亮朱佳庆喻湘华黄华波刘玉兰
Owner WUHAN INSTITUTE OF TECHNOLOGY
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