Rod-like polyaniline/wood electrode material as well as preparation method and application thereof

An electrode material, polyaniline technology, applied in the field of rod-shaped polyaniline/wood electrode materials and its preparation, can solve the problems of commercialization of poor cycle stability, achieve good cycle stability, improve electrical conductivity and structural stability, The effect of improving electrochemical performance

Active Publication Date: 2020-04-24
西安瑞丽洁实验仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the shrinkage and expansion of polyaniline volume during the charge and discharge process lead to its poor cycle stability and limit its commercialization. The pores of wood can reduce the shrinkage and expansion of polyaniline volume and enhance its stability. However, the preparation of conductive materials by attaching polyaniline to wood has not been reported yet.

Method used

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  • Rod-like polyaniline/wood electrode material as well as preparation method and application thereof
  • Rod-like polyaniline/wood electrode material as well as preparation method and application thereof
  • Rod-like polyaniline/wood electrode material as well as preparation method and application thereof

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preparation example Construction

[0036] The invention discloses a method for preparing a rod-shaped polyaniline / wood electrode material, which aims to solve the problems of high preparation cost, low energy efficiency and poor electrical conductivity of biomass energy storage materials, comprising the following steps,

[0037] Step 1, delignifying the wood,

[0038] Cut the wood into thin slices with a length of 1-4cm, a width of 0.5-1cm, and a thickness of 1-5mm. Weigh 0.2-0.4g of sodium chlorite and 1-1.5ml of glacial acetic acid into a 100ml beaker and dissolve in 25-50ml of deionized water. Then put the prepared wood into the beaker, and obtain the delignified wood under the condition of 80-90°C with a rotation speed of 100-200rpm for 12-18 hours, put it into the refrigerator at -20-15°C for 4-12 hours, and then Freeze-drying at -50 to -40°C for 10 to 12 hours to obtain dried delignified wood;

[0039] Step 2: Take 10-15ml of deionized water in a beaker and add 0.5-5g of aniline, and perform magnetic sti...

Embodiment 1

[0048] A kind of preparation method of rod-shaped polyaniline / wood electrode material of the present invention comprises the following steps,

[0049] Step 1: Cut the wood into slices of 4cm in length, 1cm in width and 5mm in thickness, weigh 0.4g of sodium chlorite and 1.3ml of glacial acetic acid into a 100ml beaker and dissolve in 25ml of deionized water, then put the prepared wood into the beaker , after 12 hours under the condition of 80 ° C and 100 rpm to obtain delignified wood; put it into the refrigerator, freeze at -20 ° C for 12 h, and then freeze-dry it at -45 ° C for 5 h to obtain dried delignified wood;

[0050] Step 2, take 10ml of deionized water in a beaker and add 0.87g of aniline, carry out magnetic stirring, prepare 2mol / L hydrochloric acid solution, add dropwise to the aniline solution, until the pH reaches 2, continue magnetic stirring for 5min, weigh 2.13 g ammonium persulfate, add 10ml deionized water and stir until dissolved;

[0051] Step 3, put the ...

Embodiment 2

[0053] A kind of preparation method of rod-shaped polyaniline / wood electrode material of the present invention comprises the following steps,

[0054] Step 1: Cut the wood into slices of 4cm in length, 1cm in width and 2mm in thickness, weigh 0.4g of sodium chlorite and 1.3ml of glacial acetic acid into a 100ml beaker and dissolve in 25ml of deionized water, then put the prepared wood into the beaker , after 12 hours under the condition of 80 ° C and 100 rpm to obtain delignified wood; put it into the refrigerator, freeze at -20 ° C for 12 h, and then freeze-dry it at -50 ° C for 5 h to obtain dried delignified wood;

[0055] Step 2, take 10ml of deionized water in a beaker and add 2.61g of aniline, and perform magnetic stirring. Prepare a 2mol / L hydrochloric acid solution, add it dropwise to the aniline solution until the pH reaches 2, continue magnetic stirring for 5 minutes, weigh 6.39g of ammonium persulfate, add 10ml of deionized water and stir until dissolved;

[0056] ...

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Abstract

The invention provides a rod-like polyaniline/wood electrode material and a preparation method and application thereof. The method comprises the following steps: 1, the pH of an aniline aqueous solution is adjusted to 1-2 with acid, a mixed solution A is obtained, delignified wood is filled with the mixed solution A after the mixed solution A is placed in an ice-water bath, then drying is conducted, and wood containing aniline is obtained; and 2, an ammonium persulfate aqueous solution is placed in an ice-water bath, and the aniline-containing wood is filled with the ammonium persulfate aqueous solution and dried to obtain the rod-like polyaniline/wood electrode material, wherein the molar ratio of aniline in the aniline aqueous solution to ammonium persulfate in the ammonium persulfate aqueous solution is 1: (1-2). According to the invention, the rod-like polyaniline uniformly grows in the pore channels and the surface of the wood to obtain a composite material on which polyaniline wood grows, so that the transmission quantity of electrons is increased, the electrochemical performance of the material is improved, the conductivity and the structural stability of the material are improved, the internal resistance of the material is reduced, the conductivity of the material is improved, and the energy storage characteristic of the material is improved.

Description

technical field [0001] The invention belongs to the technical field of biomass energy, in particular to a rod-shaped polyaniline / wood electrode material and its preparation method and application. Background technique [0002] In recent years, many oil crises broke out in the world, making many countries determined to develop their own resource development strategy. Compared with petroleum-based materials, bio-based materials have the advantages of abundant reserves, wide sources, renewable, and degradable; at the same time, the production process of bio-based materials is green and environmentally friendly, and the emission of carbon dioxide is relatively low, which meets the needs of people in the 21st century. environmental protection needs. Wood, as one of the most abundant bio-based materials in nature, has received extensive attention from researchers for a long time. Wood is the only renewable, recyclable and naturally degradable material among the four major materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/48H01G11/86C08G73/02
CPCC08G73/0266H01G11/24H01G11/30H01G11/48H01G11/86Y02E60/13
Inventor 熊传银李萌瑞李冰冰赵伟段超戴磊
Owner 西安瑞丽洁实验仪器有限公司
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