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A polyaniline-porous carbon composite electrode material with interfacial covalent bonds and its preparation method

A composite electrode and porous carbon technology, applied in the field of materials, can solve the problem of inappropriate porous carbon, and achieve the effects of low price, excellent cycle stability, and easy industrial production.

Active Publication Date: 2019-09-24
陕西西科永泰再生资源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is not applicable to amorphous porous carbons

Method used

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  • A polyaniline-porous carbon composite electrode material with interfacial covalent bonds and its preparation method
  • A polyaniline-porous carbon composite electrode material with interfacial covalent bonds and its preparation method
  • A polyaniline-porous carbon composite electrode material with interfacial covalent bonds and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A method for preparing a polyaniline-porous carbon composite material with interfacial covalent bonds, comprising the following steps:

[0040] (1) Take nitric acid and be mixed with 100 mL of nitric acid aqueous solution with a mass concentration of 16%, mix the prepared nitric acid aqueous solution and 10 grams of commercial activated carbon (abbreviated as AC) into a three-necked flask, and reflux for 5 hours under constant temperature magnetic stirring in a water bath at 50 ° C. . After the reaction is complete, filter while it is hot, and wash with distilled water until it is neutral. The filtrate is dried in an oven at 110°C for 12 hours. After cooling, black powdery nitric acid activated porous carbon is obtained. Take it out for use, and record it as HNO 3 -AC.

[0041] (2) Take 5 grams of the above-mentioned HNO 3 -AC is dispersed in a mixture of 100mL toluene and 5mL silane coupling agent anilinomethyltriethoxysilane (hereinafter referred to as ND42), 200W ult...

Embodiment 2

[0061] (1) Take nitric acid and be mixed with 100 mL of nitric acid aqueous solution with a mass concentration of 18%, mix the prepared nitric acid aqueous solution and 10 grams of commercial activated carbon (abbreviated as AC) into a three-necked flask, and reflux for 5 hours under constant temperature magnetic stirring in a water bath at 50 ° C. . After the reaction is complete, filter while it is hot, and wash with distilled water until it is neutral. The filtrate is dried in an oven at 110°C for 12 hours. After cooling, black powdery nitric acid activated porous carbon is obtained. Take it out for use, and record it as HNO 3 -AC.

[0062] (2) Take 4 grams of the above-mentioned HNO 3 -AC is dispersed in a mixture of 100mL toluene and 5mL silane coupling agent anilinomethyltriethoxysilane (hereinafter referred to as ND42), 200W ultrasonic dispersion for 1h; then heated to 110°C for reflux reaction for 24h; After cooling, filter with suction, wash with toluene, acetone, a...

Embodiment 3

[0067] (1) Take nitric acid and be mixed with 100 mL of nitric acid aqueous solution with a mass concentration of 16%, mix the prepared nitric acid aqueous solution and 10 grams of commercial activated carbon (abbreviated as AC) into a three-necked flask, and reflux for 5 hours under constant temperature magnetic stirring in a water bath at 50 ° C. . After the reaction is complete, filter while it is hot, and wash with distilled water until it is neutral. The filtrate is dried in an oven at 110°C for 12 hours. After cooling, black powdery nitric acid activated porous carbon is obtained. Take it out for use, and record it as HNO 3 -AC.

[0068] (2) Take 4 grams of the above-mentioned HNO 3 -AC is dispersed in a mixture of 100mL toluene and 4mL silane coupling agent anilinomethyltriethoxysilane (hereinafter referred to as ND42), 200W ultrasonic dispersion for 1h; then heated to 110°C for reflux reaction for 24h; After cooling, filter with suction, wash with toluene, acetone, a...

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Abstract

The invention provides a polyaniline-porous carbon composite electrode material with interface covalent bond linkage and a preparation method thereof. The preparation method comprises the following steps: taking an active carbon as the base material; performing activating treatment on the base material by nitric acid, and then performing functionalization on the base material by using a coupling agent ND42 containing an aniline group; and performing in-situ polymerization on the aniline on the surface, and obtaining a PANI-AC composite material with the interface covalent bond linkage. The characteristics of the composite material are that based on a covalent bonding strategy, a carbon material with skeleton stability and a conductive PANI material with higher pseudocapacitance are effectively and firmly combined, and the interaction between the two materials is enhanced, which forms a larger pi electron delocalization system, so that the electron transfer between two phases is also transformed from the inter-chain hopping mode into the intrachain direct conduction, so that the properties of electrode materials are improved, which is very suitable for electrode materials for supercapacitors.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a polyaniline-porous carbon composite electrode material with interfacial covalent bonds and a preparation method thereof. Background technique [0002] As an electrode material, polyaniline (PANI) has a high pseudocapacitive specific capacity, less self-discharge, low cost and excellent kinetic properties, but the diffusion of carriers (ions, etc.) inside the polyaniline material is slow, resulting in Capacitors have low power performance and poor cycle performance. Activated carbon materials have the characteristics of large specific surface area, rich pore structure, high electrical conductivity, good chemical stability, and low price. They are widely used as electrode materials for supercapacitors, but their low energy density has become a bottleneck restricting their application. [0003] In order to solve the bottleneck problem of the two as electrode materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/32H01G11/48H01G11/26H01G11/86
Inventor 蔡江涛陈晨邱介山周安宁张亚婷杜美利
Owner 陕西西科永泰再生资源科技有限公司
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