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Metal phthalocyanine/carbon nano tube composite catalyst and its preparation method and lithium/thinly chloride battery using the catalyst

A carbon nanotube composite, metal phthalocyanine technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. It can solve the problems such as chemical change, unfavorable battery discharge, etc., to achieve significant practical value and economic benefits, improve the discharge voltage, and the effect of large migration space.

Inactive Publication Date: 2009-08-19
SOUTH CHINA NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the existing lithium / thionyl chloride battery, since LiCl, S and other reaction products are deposited in the pores of the electrode, as the discharge reaction proceeds, the deposits gradually increase, the pore size gradually becomes smaller, and some even block. The effective surface area of ​​the electrode is reduced, and the polarization of the electrode is exacerbated, which is not conducive to the later discharge of the battery, resulting in attenuation of the discharge performance

Method used

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  • Metal phthalocyanine/carbon nano tube composite catalyst and its preparation method and lithium/thinly chloride battery using the catalyst
  • Metal phthalocyanine/carbon nano tube composite catalyst and its preparation method and lithium/thinly chloride battery using the catalyst
  • Metal phthalocyanine/carbon nano tube composite catalyst and its preparation method and lithium/thinly chloride battery using the catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Weigh 1 g of purified multi-walled carbon nanotubes and add them to 200 ml of thionyl chloride, reflux at 70° C. for 24 hours under the protection of argon, and then distill under reduced pressure to remove the remaining thionyl chlorides to obtain acid-chlorinated carbon nanotubes; Take 0.5 g of acid-chlorinated carbon nanotubes, add 1.5 g of cobalt phthalocyanine, 100 g of dimethylformamide and 0.12 g of pyrimidine under the protection of argon, and react at 110 ° C for 10 days; filter the above solution with a microfiltration membrane, And rinse with dimethylformamide to remove excess cobalt phthalocyanine to obtain a black fluffy powder, which is cobalt phthalocyanine / carbon nanotube composite catalyst.

Embodiment 2

[0050] Weigh 1 g of purified multi-walled carbon nanotubes and add them to 200 ml of thionyl chloride, reflux at 70° C. for 24 hours under the protection of argon, and then distill under reduced pressure to remove the remaining thionyl chlorides to obtain acid-chlorinated carbon nanotubes; Take 0.5 g of acid-chlorinated carbon nanotubes, add 1.5 g of iron phthalocyanine, 100 g of dimethylformamide and 0.12 g of pyrimidine under the protection of argon, and react at 110 ° C for 10 days; filter the above solution with a microfiltration membrane, And rinse with dimethylformamide to remove excess iron phthalocyanine to obtain a black fluffy powder, which is the iron phthalocyanine / carbon nanotube composite catalyst.

Embodiment 3

[0052] Weigh 1 g of purified multi-walled carbon nanotubes and add them to 200 ml of thionyl chloride, reflux at 75° C. for 48 hours under the protection of argon, and then distill under reduced pressure to remove the remaining thionyl chlorides to obtain acid-chlorinated carbon nanotubes; Take 0.5 g of acid-chlorinated carbon nanotubes, add 1 g of dinuclear nickel phthalocyanine, 75 g of dimethylformamide and 0.08 g of pyrimidine under the protection of argon, and react at 105 ° C for 9 days; filter the above solution with a microfiltration membrane, And rinse with dimethylformamide to remove excess binuclear nickel phthalocyanine to obtain a black fluffy powder, which is the binuclear nickel phthalocyanine / carbon nanotube composite catalyst.

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Abstract

The invention discloses a metal phthalocyanine / carbon nanometer pipe compound catalyst, a method for preparing the same and a lithium / thionyl chloride battery using the same, wherein the metal phthalocyanine / carbon nanometer pipe compound catalyst is prepared by evenly and closely loading metal phthalocyanine compounds on a carbon nanometer pipe; and the metal phthalocyanine / carbon nanometer pipe compound catalyst is mixed with carbon black and a binding agent, and the mixture subjected to forming and drying to prepare an anode carbon plate of the lithium / thionyl chloride battery using the catalyst. The metal phthalocyanine compounds are evenly and closely loaded on the carbon nanometer pipe. On one hand, the electrically discharged product of a LiCl film can be loosened by the catalysis of the metal phthalocyanine compounds; on the other hand, a network structure is built up in the carbon anode of the carbon nanometer pipe, which facilitates the electric communication of electrolytes and the improvement of electric conductivity of the electrodes. Due to the synergetic effect of the metal phthalocyanine compounds and the carbon nanometer pipe, the operating voltage of the lithium / thionyl chloride battery is improved. The method has advantages of simple process, simple operation, the suitability for industrialized production and obvious practical values and economic benefits.

Description

technical field [0001] The invention relates to the field of lithium / thionyl chloride batteries. Background technique [0002] Lithium / thionyl chloride battery is the primary battery with the highest specific energy in the battery system currently used in the world. The positive electrode material of the battery is mainly a mixture of carbon black and polytetrafluoroethylene emulsion. The carbon black is usually acetylene black, which is not only a catalyst for the cathode reaction, but also a carrier for LiCl and S, the electrochemical reaction products. Generally, carbon materials have a catalytic effect on the reduction of thionyl chloride, and the stronger the catalytic effect, the larger the discharge capacity and the higher the discharge voltage obtained. [0003] Carbon nanotubes were first formally proposed in 1991. They can be regarded as seamless hollow nanoscale coaxial cylinders formed by curling graphite sheets with a hexagonal structure, and the two ends are c...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J21/18H01M6/14H01M4/96H01M4/90H01M4/38H01M4/86
CPCY02E60/12Y02E60/50
Inventor 袁中直黄斯娉刘金成
Owner SOUTH CHINA NORMAL UNIVERSITY
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