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Preparation method and application of polypyrrole-coated carbon fluoride positive electrode material

A technology of coating carbon fluoride and positive electrode material, which is applied to the electrodes of primary batteries, battery electrodes, electrical components, etc., can solve the problems of low efficiency and difficult industrialization, and achieve the improvement of energy density and power density, conductivity improvement, Realize the effect of mass production

Active Publication Date: 2016-02-17
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method requires carbon rods as the matrix, and can only be operated as a single unit, which is inefficient and difficult to industrialize; and at 4C rate, the specific capacity is only about 8% of the theoretical capacity

Method used

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  • Preparation method and application of polypyrrole-coated carbon fluoride positive electrode material
  • Preparation method and application of polypyrrole-coated carbon fluoride positive electrode material
  • Preparation method and application of polypyrrole-coated carbon fluoride positive electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0038] (1) Weigh 1 g of carbon fluoride, pour it into 10 mL of deionized water dissolved in a dispersant, and make a 0.1 g / mL carbon fluoride suspension by magnetic stirring, and stir for 30 minutes to make the agglomerated large particles of carbon fluoride fully Dispersion: ultrasonically disperse the above-mentioned carbon fluoride suspension for 30 minutes to fully disperse the agglomerated carbon fluoride particles. Under the condition of 0°C, in the three-neck round-bottomed flask containing the carbon fluoride suspension, magnetic stirring is carried out, and argon gas is introduced while passing through, and 0.125g of pyrrole monomer is added to the above-mentioned carbon fluoride suspension, and continue Stir for 30 minutes to disperse the pyrrole monomer evenly. Thus, a mixed suspension of carbon fluoride / pyrrole was prepared.

[0039] (2) Weigh 0.5g (NH 4 ) 2 S 2 o 8 , was added to 20mL2mol / L HCl solution, and the concentration was 0.025g / mL (NH 4 )S 2 o 4 s...

Embodiment 2

[0047] (1) Weigh 1 g of carbon fluoride, pour it into 10 mL of deionized water dissolved in a dispersant, and make a 0.1 g / mL carbon fluoride suspension by magnetic stirring, and stir for 30 minutes to make the agglomerated large particles of carbon fluoride fully Dispersion: ultrasonically disperse the above-mentioned carbon fluoride suspension for 30 minutes to fully disperse the agglomerated carbon fluoride particles. Under the condition of 0°C, in the three-necked round-bottomed flask containing the carbon fluoride suspension, magnetic stirring is carried out, and argon gas is introduced while passing through, and 0.0625g of pyrrole monomer is added to the above carbon fluoride suspension, and continue Stir for 30 minutes to disperse the pyrrole monomer evenly. Thus, a mixed suspension of carbon fluoride / pyrrole was prepared.

[0048] (2) Weigh 0.25g (NH 4 ) 2 S 2 o 8 , was added to 10mL2mol / L HCl solution, and the concentration was 0.025g / mL (NH 4 )S 2 o 4 solutio...

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Abstract

The present invention discloses a preparation method and application of a polypyrrole-coated carbon fluoride positive electrode material, the preparation of the positive electrode material is as follows: carbon fluoride particles are dispersed in water in the surfactant role, pyrrole monomer is added for evenly mixing to obtain carbon fluoride / pyrrole suspension; an inorganic salt oxidizing agent-containing acidic solution is added dropwise into the obtained carbon fluoride / pyrrole suspension for stirring for reaction, and the reaction product is successively washed and dried to obtain the polypyrrole-coated carbon fluoride positive electrode material. The preparation method is simple, avoids the use of toxic organic solvents, is non-toxic and environmentally friendly and low in cost, and can meet the requirements of industrial production; the polypyrrole layer of the obtained polypyrrole-coated carbon fluoride positive electrode material is evenly coated, the obtained polypyrrole-coated carbon fluoride positive electrode material has good conductivity, and can improve the rate discharge performance of a one-shot battery.

Description

technical field [0001] The present invention relates to the preparation and application of primary battery positive electrode materials, in particular to a preparation method of polypyrrole (PPy) coated carbon fluoride positive electrode material and its application in the preparation of primary battery positive electrode materials, belonging to organic / inorganic composite positive electrode materials field of preparation. Background technique [0002] Fluorinated carbons, as a new type of energy material, are attracting more and more attention. At present, the countries that produce and apply lithium-carbon fluoride batteries in the world are mainly the United States and Japan. The National Aeronautics and Space Administration (NASA) has long put forward the theory of using fluorinated carbons as electrode active materials for lithium batteries, and has gradually formed industrialization (fluorinated carbons as battery electrode active materials, combined with non-aqueous ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/62H01M4/06
CPCH01M4/06H01M4/366H01M4/582H01M4/624
Inventor 潘勇李磊朱岭周洁
Owner XIANGTAN UNIV
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