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Organic positive electrode active material as well as preparation method and application of organic positive electrode active material

A positive electrode active material and organic technology, applied in the field of organic positive electrode active materials and their preparation, can solve the problems of poor cycle stability of materials and achieve the effect of good stability

Inactive Publication Date: 2015-07-29
杭州聚力氢能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The present invention aims to provide an organic positive electrode active material, its preparation method and application, so as to solve the problem that the small molecule organic compound in the current organic battery is easily soluble in the organic electrolyte when the electrode material is used as the electrode material during the charge and discharge process, resulting in the cycle of the material. bad stability problem

Method used

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  • Organic positive electrode active material as well as preparation method and application of organic positive electrode active material
  • Organic positive electrode active material as well as preparation method and application of organic positive electrode active material
  • Organic positive electrode active material as well as preparation method and application of organic positive electrode active material

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Effect test

Embodiment 1

[0043] This embodiment prepares the organic cathode active material, comprising the following steps:

[0044] Weigh 4mmol of 2,6-diaminoanthraquinone and 4mmol of pyromellitic dianhydride, respectively, and transfer them to a 50mL two-necked flask. Add 30mL of m-cresol and 10 drops (about 1ml) of isoquinoline, put it into a magnetic stirrer, connect the condenser tube and the double-row tube, and connect the side tube to the liquid-sealed bubbler. Warm up to 50°C under argon atmosphere and stir for a while. Then the temperature was raised to 100° C. for 10 hours, and then the temperature was raised to 200° C. for 12 hours. The moisture generated during the reaction was discharged into the fume hood through the liquid-sealed bubbler. After the reaction was completed, it was cooled to room temperature, and the mixture was poured into methanol for precipitation. The product was washed with methanol and hot water, and dried in vacuum before use.

[0045] The infrared spectrum ...

Embodiment 2

[0049] This embodiment prepares the organic cathode active material, comprising the following steps:

[0050] Weigh 3 mmol of p-2,7-diaminoanthraquinone and 3 mmol of naphthalene tetracarboxylic dianhydride, respectively, and transfer them to a 50 mL two-necked flask. Add 30 mL of m-cresol and 10 drops of isoquinoline, put in a magnetic stirring bar, connect the condenser tube and the double-row tube, and connect the side tube to the liquid-sealed bubbler. Warm up to 50°C under argon atmosphere and stir for a while. Then the temperature was raised to 100° C. for 10 hours, and then the temperature was raised to 200° C. for 12 hours. The moisture generated during the reaction was discharged into the fume hood through the liquid-sealed bubbler. After the reaction was completed, it was cooled to room temperature, and the mixture was poured into methanol for precipitation. The product was washed with methanol and hot water, and dried in vacuum before use.

[0051] The infrared ...

Embodiment 3

[0054] This embodiment prepares the organic cathode active material, comprising the following steps:

[0055] Weigh 4.5mmol 2,6-diaminoanthraquinone and 4.5mmol isophthalamide respectively, and transfer them to a 50mL two-necked flask. Add 30 mL of m-cresol and 10 drops of isoquinoline, put in a magnetic stirring bar, connect the condenser tube and the double-row tube, and connect the side tube to the liquid-sealed bubbler. Warm up to 50°C under argon atmosphere and stir for a while. Then the temperature was raised to 100° C. for 10 hours, and then the temperature was raised to 200° C. for 12 hours. The moisture generated during the reaction was discharged into the fume hood through the liquid-sealed bubbler. After the reaction was completed, it was cooled to room temperature, and the mixture was poured into methanol for precipitation. The product was washed with methanol and hot water, and dried in vacuum before use.

[0056] The infrared spectrum of the prepared organic ...

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Abstract

The invention discloses an organic positive electrode active material as well as a preparation method and an application of the organic positive electrode active material. The organic positive electrode active material is obtained by polymerizing two materials with oxidative activity sites and has more redox couples and higher molecular weight as well, and the problem about dissolving of small organic molecules is solved. When the material is applied to preparation of alkali metal ion batteries or alkaline earth metal ion batteries, an organic polymer can quickly have a redox reaction during charging and discharging due to the fact that the number of the redox couples is larger, and the prepared alkali metal ion batteries or the alkaline earth metal ion batteries have the characteristics of high specific capacity and large charge-discharge rate, high specific energy, good stability and long service life.

Description

technical field [0001] The invention relates to the field of secondary battery production, in particular to an organic cathode active material capable of charging and discharging at a large rate, a preparation method and application thereof. Background technique [0002] In the 1990s, Sony first introduced lithium-ion batteries. After decades of development, the specific capacity, specific power and safety of lithium-ion batteries have been greatly developed. However, the rapid development of new handheld terminal equipment, electric vehicles, large-scale energy storage and other fields has put forward new requirements for the existing energy storage system: higher energy density, higher power density, longer cycle life , cheap and higher security. The existing lithium-ion battery technology is based on the reversible intercalation and extraction of lithium ions in the metal oxide cathode material, because its intercalation and extraction potential is higher than that of Li...

Claims

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Application Information

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IPC IPC(8): H01M4/60H01M10/05H01M10/0525
CPCH01M4/24H01M4/60H01M4/602H01M4/606H01M4/608H01M10/05H01M10/0525C09B69/101H01M4/137H01M4/1399H01M10/054Y02E60/10
Inventor 程寒松孙玉宝李改曾丹黎
Owner 杭州聚力氢能科技有限公司
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