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Nitrogen and phosphorus co-doped porous carbon film @ polyaniline hybrid electrode material having interface covalent bond link, and preparation method of hybrid electrode material

A hybrid material, porous carbon technology, applied in the field of materials, can solve the problem of inappropriate porous carbon, and achieve the effects of improving specific capacitance, improving cycle stability, and excellent cycle stability

Active Publication Date: 2017-09-29
XIAN UNIV OF SCI & TECH
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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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  • Nitrogen and phosphorus co-doped porous carbon film @ polyaniline hybrid electrode material having interface covalent bond link, and preparation method of hybrid electrode material
  • Nitrogen and phosphorus co-doped porous carbon film @ polyaniline hybrid electrode material having interface covalent bond link, and preparation method of hybrid electrode material
  • Nitrogen and phosphorus co-doped porous carbon film @ polyaniline hybrid electrode material having interface covalent bond link, and preparation method of hybrid electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A method for preparing a polyaniline-porous carbon composite material with interfacial covalent bonds, comprising the following steps:

[0050] (1) Weighing the mass ratio of polyacrylonitrile: triphenylphosphine: SBA-15 is 2 grams: 1 grams: 1 grams, with 21 grams of N,N-dimethylformamide as solvent, in 70 ° C oil bath Next, dissolve polyacrylonitrile, triphenylphosphine and SBA-15 in N,N-dimethylformamide (DMF), and stir continuously at 300r / min for 8h with a magnetic stirrer to fully dissolve and mix the mixed system. homogeneous, and then ultrasonicated with 200W for 0.5h to obtain a mixed spinning solution with a mass content of 8% polyacrylonitrile. The nanofiber membrane was obtained by electrospinning (the distance between the center of the drum and the spinning needle was 15cm, the drum was φ8.5×16cm, the needle was No. 20, the needle size was φ0.06mm, the voltage was 25kv, and the rotating speed was 750r / min). Then, nitrogen and phosphorus co-doped porous carb...

Embodiment 2

[0076] (1) Weighing the mass ratio of polyacrylonitrile: triphenylphosphine: SBA-15 is 2.5 grams: 1 gram: 1 gram in turn, with 22 grams of N, N-dimethylformamide as solvent, at 70 ℃ oil Under the bath, dissolve in N,N-dimethylformamide (DMF), stir continuously with a magnetic stirrer at 300r / min for 8h, fully dissolve the mixed system and mix evenly, and then use a 200W ultrasonic wave for 0.5h to obtain A mixed spinning solution with a polyacrylonitrile content of 8%. The nanofiber membrane was obtained by electrospinning (the distance between the center of the drum and the spinning needle was 15cm, the drum was φ8.5×16cm, the needle was No. 20, the needle size was φ0.06mm, the voltage was 25kv, and the rotating speed was 750r / min). Then pre-oxidize, carbonize, activate and etch (soak in 20% hydrofluoric acid for 24 hours), etc. to obtain nitrogen and phosphorus co-doped porous carbon membrane.

[0077] Pre-oxidation: In air atmosphere, increase the temperature at 1°C / min to...

Embodiment 3

[0086](1) Weighing the mass ratio of polyacrylonitrile: triphenylphosphine: SBA-15 is 2 grams: 1 gram: 1 gram in turn, with 21 grams of N,N-dimethylformamide as solvent, at 70 ℃ oil Under the bath, dissolve in N,N-dimethylformamide (DMF), stir continuously with a magnetic stirrer at 300r / min for 8h, fully dissolve the mixed system and mix evenly, and then use a 200W ultrasonic wave for 0.5h to obtain A mixed spinning solution with a polyacrylonitrile content of 8%. Nanofiber membranes were obtained by electrospinning (the distance between the center of the drum and the spinning needle was 15cm, the drum was φ8.5×16cm, the needle was No. 20, the needle size was Φ0.06mm, the voltage was 25kv, and the rotation speed was 750r / min). Then pre-oxidize, carbonize, activate and etch (soak in 20% hydrofluoric acid for 24 hours), etc. to obtain nitrogen and phosphorus co-doped porous carbon membrane.

[0087] Pre-oxidation: In air atmosphere, increase the temperature at 1°C / min to 280°C...

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Abstract

The invention relates to a nitrogen and phosphorus co-doped porous carbon film @ polyaniline hybrid electrode material having an interface covalent bond link, and a preparation method of the hybrid electrode material. The preparation method is characterized in that an anilino methyl triethoxysilane functional porous carbon film and aniline are dispersed into a water solution containing hexadecyl trimethyl ammonium bromide and camphorsulfonic acid, then an ammonium persulfate initiator is added into the dispersed solution, and camphorsulfonic acid-doped polyaniline (PANI) is enabled to be grafted with the surface of the porous carbon fiber film in situ, so that a firm and uniform coating layer having the covalent bond link is formed. Due to the existence of an interface covalent bond, porous carbon fibers having framework stability are effectively and firmly combined with a conductive PANI material with higher pseudocapacitance, the interaction between the porous carbon fibers and the conductive PANI material is enhanced, a larger Pi electron delocalization system is formed, the electron transfer between two phases is also changed into intrachain direct conduction from an interchain jump mode, and the specific capacitance and cyclic stability of the electrode material are further greatly improved; therefore, the nitrogen and phosphorus co-doped porous carbon film @ polyaniline hybrid electrode material is suitable for supercapacitors.

Description

technical field [0001] The invention belongs to the field of material technology, and in particular relates to a nitrogen-phosphorus co-doped porous carbon film@polyaniline hybrid electrode material with interface 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 fiber material has the characteristics of large specific surface area, developed and rich pore structure, high electrical conductivity, good chemical stability, flexibility and bendability, etc. It has been widely used in supercapacitor electrode materials in recent years, but its low energy density has become a constraint for its A bottleneck of the applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/463D06M13/256D06M15/61D06M11/65D06M13/513D04H1/43D04H1/728H01G11/24H01G11/30H01G11/32H01G11/48D06M101/40
CPCD04H1/43D04H1/728D06M11/65D06M13/256D06M13/463D06M13/513D06M15/61D06M2101/40H01G11/24H01G11/30H01G11/32H01G11/48Y02E60/13
Inventor 蔡江涛周安宁邱介山张亚婷刘国阳党永强赵小玲
Owner XIAN UNIV OF SCI & TECH
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