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Method of preparing lithium salt doping state polyaniline electrode material for super capacitor

A supercapacitor and polyaniline technology, applied in capacitors, electrolytic capacitors, circuits, etc., can solve the problems of unsatisfactory energy density and low specific capacitance value, and achieve low specific capacitance value, good pore structure, and high specific surface area. Effect

Inactive Publication Date: 2007-08-15
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its specific capacitance value is still low, and the energy density is not ideal

Method used

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  • Method of preparing lithium salt doping state polyaniline electrode material for super capacitor
  • Method of preparing lithium salt doping state polyaniline electrode material for super capacitor

Examples

Experimental program
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Embodiment 1

[0019] (1) Dissolve 0.93mL of aniline in 100mL of organic solvent CCl 4 Solution A was made in , and 0.57g of ammonium persulfate was dissolved in 100mL of 1mol / L hydrochloric acid to make solution B ([APS] / [AN]=1:4); (2) carefully mix solution A and solution B successively Move it into a reaction bottle and react at room temperature for 5 hours; (3) collect the product in solution B, wash the product with water, ethanol and acetone several times until the washing liquid is colorless; (4) vacuum dry the washed product at 40°C 48h, the polyaniline nanofiber material doped with hydrochloric acid was obtained; (5) the polyaniline nanofiber material was treated with 1mol / L ammonia water for 12h under stirring conditions, washed, and vacuum-dried at 80°C for 12h to obtain the intrinsic properties of polyaniline nanofibers. (6) under inert gas protection atmosphere, the polyaniline material in the intrinsic state was mixed with 1mol / L LiPF 6 Soak in EC / DEC / DMC (EC / DEC / DMC=1 volume ...

Embodiment 2

[0021] (1) 1.86 mL of aniline is dissolved in 100 mL of organic solvent toluene to form solution A, and 2.28 g of ammonium persulfate is dissolved in 100 mL of 2mol / L hydrochloric acid to form solution B ([APS] / [AN]=1: 2); (2) Carefully transfer solution A and solution B into the reaction flask in turn, and react at room temperature for 10 hours; (3) collect the product in solution B, wash the product with water, ethanol and acetone for several times, until the washing liquid is colorless (4) vacuum-dry the washed product at 60° C. for 24 hours to obtain a polyaniline nanofiber material doped with hydrochloric acid; (5) mix the polyaniline nanofiber material with 0.5mol / L sodium hydroxide solution under stirring conditions Treated for 24 hours, washed, and vacuum dried at 60°C for 24 hours to obtain the intrinsic state of polyaniline nanofibers; (6) the intrinsic state polyaniline material was dissolved in 1mol / L LiBF 4 Soak in EC / DEC (EC / DEC=1 volume ratio) solution for 48 ho...

Embodiment 3

[0023] (1) Dissolve 0.465mL of aniline in 100mL of organic solvent CH 2 Cl 2 Solution A was made in , and 0.285g of ammonium persulfate was dissolved in 100mL of 1mol / L perchloric acid to make solution B ([APS] / [AN]=1:1); (2) solution A and solution B Carefully move into the reaction bottle in turn, react at room temperature for 20h; (3) collect the product in solution B, wash the product with water, ethanol and acetone several times, until the washing liquid is colorless; (4) put the washed product at 80°C After vacuum drying for 12 hours, the polyaniline nanofiber material doped with perchloric acid was obtained. (5) Treat the polyaniline nanofiber material with a 0.2mol / L potassium hydroxide solution for 48h under stirring conditions, wash it, and dry it in vacuum at 80°C for 12h to obtain the intrinsic state of the polyaniline nanofiber; (6) in an inert gas Under the protective atmosphere, the intrinsic state polyaniline material was dissolved in 1mol / L LiClO 4 After so...

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Abstract

The invention discloses a preparing method of lithium salt doping state polyaniline electrode material to produce super capacitor, which comprises the following steps: adopting interfacial polymerization method; preparing acid doping state polyaniline nanometer fiber with diameter between 30 nm and 120 nm and length at 500nm to several micrometer; contra-doping with alkali liquor; getting Eigen state; doping with lithium salt solution under the protection of inert gas; getting the product. This electric pole material possesses bigger than 120 F / g ratio capacitance value in organic electrolytic solution, which can resolve the problem of low ratio capacitance value in the organic electrolytic solution.

Description

technical field [0001] The invention relates to a preparation method of an electrode material for a supercapacitor, in particular to a method for preparing a lithium salt-doped polyaniline electrode material for a supercapacitor. Background technique [0002] Polyaniline is considered to be the most promising conductive polymer electrode in the field of supercapacitors due to its good chemical stability, electrical conductivity and high pseudocapacitive energy storage characteristics, easy synthesis, and low monomer cost. one of the materials. In the organic electrolyte system, polyaniline needs to be doped to have electrical conductivity and capacitive behavior. Generally, various inorganic acids, organic acids and lithium salt solutions can be used as dopants. KwangSun Ryu et al. (Kwang Sun Ryu, Kwang Man Kim, Nam-Gyu Park, et al. Symmetricredox supercapacitor with conducting polyaniline electrodes [J]. Journal of PowerSources, 2002, 103(2): 305-309) (Kwang Sun Ryu, Kwan...

Claims

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Application Information

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IPC IPC(8): C08L79/02C08K3/24H01G9/042
CPCY02E60/13
Inventor 卢海赖延清张治安李劼李晶李荐宋海申刘业翔
Owner CENT SOUTH UNIV
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