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A process for the preparation of a conductive polymer composite

A technology of conductive polymers and composite materials, applied in the direction of conductive materials, circuits, positive electrodes, etc. dispersed in non-conductive inorganic materials, can solve problems such as lack of efficiency of electrodes, poor conductors, and limited cycle life

Inactive Publication Date: 2016-04-27
UNIVERSITE CATHOLIQUE DE LOUVAIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem is that usually these polymers are soluble in typical battery electrolytes and are poor conductors
However, the thus prepared electrode suffers from limited cycle life due to the dissolution of PTMA during discharge cycles.
Therefore, in both cases, electrodes prepared based on this PTMA lack efficiency for battery applications

Method used

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  • A process for the preparation of a conductive polymer composite
  • A process for the preparation of a conductive polymer composite
  • A process for the preparation of a conductive polymer composite

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0105] Synthesize the cross-linked PTMA / C composite material according to the method described in the present invention. To ensure electrical conductivity, about 15% by weight of acetylene black was added to the reaction mixture. The method produces a highly dispersed carbon conductive particle in a PTMA matrix with direct contact between the two components. It has been found that the addition of acetylene black, ie carbon black, also increases the brittleness of the composite and ensures that the PTMA powder is finely ground.

[0106] In a typical synthesis, 1 g of acetylene black (MTI company) and 6 g of 2,2,6,6-tetramethyl-4-piperidinyl methacrylate (TMPM, TCICo.Ltd.), 188 μl ethylene di Alcohol dimethacrylate crosslinking agent (AcrossOrganics) and 40 mg of nitrile recrystallization (AcrossOrganics) were mixed thoroughly, and a small amount of dichloromethane (2-5ml dropwise, AcrossOrganics) was added to disperse the components evenly. While and after the dichloromethane...

example 2

[0110] The PTMPM / C composite material containing 5wt% carbon black was prepared according to the method in Example 1, except that the amount of acetylene black (MTI company) added was 0.33 g. Then according to the method described in Example 1, PTMA / C composites were prepared. The conductivity measured according to the prior art is 1.67 * 10 -5 S / m.

example 3

[0112] The PTMPM / C composite material containing 10wt% carbon black was prepared according to the method in Example 1, except that the amount of acetylene black (MTI company) added was 0.67 g. Then according to the method described in Example 1, PTMA / C composites were prepared. The conductivity measured according to the prior art is 4.3 * 10 -5 S / m. The output energy density of the PTMA / C composite prepared in this example is 280Wh / kg when the power density is 3.5kW / kg (10C), and the output energy density is 200Wh when the power density is 10.23kW / kg (30C). / kg.

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Abstract

The present invention relates to a process for the preparation of an electrically conductive polymer composite comprising the steps of (a) providing electrically conductive particles, a monomer, and a cross-linking agent to form a reaction mixture, (b) bringing said reaction mixture to a process temperature which is greater than the melting temperature of the monomer and than the temperature at which the polymerization is activated, said polymerization is considered to be activated when at least 5% of the monomer was converted, (c) retrieving a cross-linked electrically conductive polymer composite comprising said electrically conductive particles, characterized in that said monomer is of formula (I) RaRbC=CRc((X)n-R) and in that step (b) of the process is carried out in a reaction mixture comprising not more than 100 wt% of an organic solvent with respect to the total weight of the monomer. The present invention also relates to an electrically conductive polymer composite obtained by the present process.

Description

technical field [0001] The present invention is primarily concerned with polymerization in reaction mixtures that contain no or little solvent to produce conductive polymer composites. The invention also relates to the conductive polymer composite thus obtained. Background technique [0002] With global warming and increasing environmental problems, electric vehicles or hybrid electric vehicles have been actively developed as clean vehicles to replace gasoline vehicles. Energy storage devices in such applications are essential so that high energy density and high throughput can be achieved while simultaneously achieving high durability and safety. [0003] Electrodes used in batteries often contain metal oxides that are known to be difficult to recycle, toxic and resource-limited. In addition, these oxides are known to be unstable when overcharged and can cause safety issues such as fire and battery explosion. Yet another approach develops redox polymers to replace metal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F20/36C08K3/04H01M4/02
CPCH01M4/362H01M4/606H01M4/625C08F2/44C08F292/00C08K3/04H01B1/20H01B1/22H01B1/24Y02E60/10C08F222/102C08F220/34C08L39/04C08F2/001C08L33/12C08L33/18C08K2201/001C08L2312/00H01M4/622H01M2004/028
Inventor 亚历山德鲁·弗拉德让·弗朗索瓦·戈伊
Owner UNIVERSITE CATHOLIQUE DE LOUVAIN