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Polyacene conductive agent and lithium ion battery by using polyacene conductive agent

A lithium-ion battery and conductive agent technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of poor conductivity and difficult dispersion of conductive agents, and achieve stable performance, good thermal stability, and environmental friendliness

Active Publication Date: 2015-04-08
NINGBO VEKEN BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Conductive agents for lithium-ion batteries currently on the market are not easy to disperse or have poor conductivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A polyacene conductive agent, the conductive agent is prepared by the following steps, under a nitrogen atmosphere, in a sodium hydroxide solution with a mass concentration of 3wt%, 3mol of o-aminophenol and 0.005mol of lithium aluminum hydride are placed at 60°C , reacted for 3h, then added 2mol benzene and 0.01mol diisobutyl aluminum hydride, reacted at 70°C for 3h, then added 0.2mol anhydrous aluminum chloride and reacted at 30°C for 2h, neutralized with hydrochloric acid after the reaction, and used Wash with dilute hydrochloric acid, then sinter at 500°C for 3 hours, and use a ball mill to grind for 5 hours, and then sinter at 400°C for the second time to obtain the polyacene conductive agent.

[0019] The polyacene conductive agent is used to prepare lithium ion batteries.

Embodiment 2

[0021] A polyacene conductive agent, the conductive agent is prepared by the following steps, under a nitrogen atmosphere, in a sodium hydroxide solution with a mass concentration of 5wt%, 1mol of o-aminophenol and 0.01mol of lithium aluminum hydride at 40 ° C , reacted for 5h, then added 1mol benzene and 0.02mol diisobutyl aluminum hydride, reacted at 50°C for 5h, then added 0.1mol anhydrous aluminum chloride and reacted at 35°C for 1h, neutralized with hydrochloric acid after the reaction, and Wash with dilute hydrochloric acid, then sinter at 600°C for 2h, and use a ball mill to grind for 7h, and then sinter at 300°C for the second time to obtain the polyacene conductive agent.

[0022] The polyacene conductive agent is used to prepare lithium ion batteries.

Embodiment 3

[0024] A polyacene conductive agent, which is prepared by the following steps, under nitrogen atmosphere, in a sodium hydroxide solution with a mass concentration of 4wt%, 2mol of o-aminophenol and 0.01mol of lithium aluminum hydride in 40-60 ℃, react for 3-5h, then add 1.2mol benzene and 0.02mol diisobutylaluminum hydride, react at 60℃ for 5h, then add 0.1mol anhydrous aluminum chloride and react at 30℃ for 2h, after the reaction, use Neutralize with hydrochloric acid, wash with dilute hydrochloric acid, then sinter at 500°C for 3h, and use ball milling for 7h, and then sinter at 400°C for the second time to obtain the polyacene conductive agent.

[0025] The polyacene conductive agent is used to prepare lithium ion batteries.

[0026] After testing the prepared lithium ion battery, the performance of the battery is stable and the cycle performance is good.

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PUM

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Abstract

The invention relates to the technical field of lithium ion battery, and concretely relates to a polyacene conductive agent and a lithium ion battery by using the polyacene conductive agent. The conductive agent is prepared by the following steps: under nitrogen atmosphere, in a sodium hydroxide solution with mass concentration of 3-5wt%, 1-3mol of ortho-aminophenol and 0.005-0.01mol of lithium aluminium hydride are reacted for 3-5 hours at 40-60 DEG C, then 1-2mol of benzene and 0.01-0.02mol of diisobutylaluminium hydride are added and reacted for 3-5 hours at 50-70 DEG C, then 0.1-0.2mol of anhydrous aluminium chloride is reacted for 1-2 hours at 30-35 DEG C, hydrochloric acid is used for neutralization after reaction is completed, dilute hydrochloric acid is used for cleaning, then sintering is carried out, after ball milling, secondary sintering is carried out to obtain the polyacene conductive agent. The polyacene conductive agent has the advantages of high conductivity, easy dispersion, good thermostabilization and environmental protection.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a polyacene conductive agent and a lithium ion battery using the same. Background technique [0002] Lithium-ion batteries have the advantages of large specific capacity, high and stable discharge voltage, good low-temperature performance, environmental friendliness, safety, long life, small self-discharge, and incomparable advantages of nickel-metal hydride and nickel-cadmium secondary batteries. Since its introduction in 1991, after more than ten years of development, lithium-ion batteries have dominated the market for small portable batteries. [0003] The negative electrode materials of lithium-ion batteries include carbon materials, intermetallic compounds, tin-based compounds, and the like. At present, commercialized lithium-ion batteries mostly use carbon materials as negative electrode materials. Compared with the positive electrode, the negative electrode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M10/0525
CPCH01M4/624H01M10/0525Y02E60/10
Inventor 潘美姿曹长河颜雪冬刘旭
Owner NINGBO VEKEN BATTERY
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