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Application of anthraquinone-2, 3-dicarboxylic acid calcium coordination polymer as lithium ion battery positive electrode material

A technology of coordination polymers and lithium-ion batteries, applied in battery electrodes, secondary batteries, active material electrodes, etc., can solve problems not related to the performance of lithium-ion battery materials, achieve good cycle stability, excellent cycle performance, The effect of high specific capacity

Active Publication Date: 2021-03-12
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it only studies its photoluminescent properties, and does not involve the performance of materials applied to lithium-ion batteries.

Method used

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  • Application of anthraquinone-2, 3-dicarboxylic acid calcium coordination polymer as lithium ion battery positive electrode material
  • Application of anthraquinone-2, 3-dicarboxylic acid calcium coordination polymer as lithium ion battery positive electrode material
  • Application of anthraquinone-2, 3-dicarboxylic acid calcium coordination polymer as lithium ion battery positive electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Dissolve 3.52mg of calcium acetate in a glass bottle filled with 5ml of deionized water, then weigh 5.92mg of anthraquinone-2,3-dicarboxylic acid into the glass bottle, shake well, and place the glass bottle in an oven for reaction , the program setting of the oven is to raise the temperature to 90°C at 3°C / min, keep at constant temperature for 48h, and then cool down to room temperature at 1°C / min. Afterwards, the cloudy solution was transferred to a centrifuge tube, and centrifuged at a speed of 3500 r / min to obtain yellow crystals. Then wash with deionized water and acetone, and then dry in a vacuum oven at 60°C for 24 hours to obtain anthraquinone-2,3-dicarboxylate calcium coordination polymer CaAQDC.

[0036] figure 1 and figure 2 Anthraquinone-2,3-dicarboxylic acid calcium coordination polymer CaAQDC and anthraquinone-2,3-dicarboxylic acid H 2 The thermogravimetric curve and infrared absorption spectrum of AQDC. By thermogravimetric analysis, the original H ...

Embodiment 2

[0052] Dissolve 3.52mg of calcium acetate in a reactor filled with 5ml of deionized water, then weigh 5.92mg of anthraquinone-2,3-dicarboxylic acid into the reactor, shake well, and place the reactor in an oven for reaction , the program setting of the oven is to raise the temperature to 120°C at 5°C / min, keep at constant temperature for 48h, and then cool down to room temperature at 2°C / min. Afterwards, the cloudy solution was transferred to a centrifuge tube, and centrifuged at a speed of 3500 r / min to obtain yellow crystals. Then wash with deionized water and acetone, and then dry in a vacuum oven at 60°C for 24 hours to obtain anthraquinone-2,3-dicarboxylate calcium coordination polymer CaAQDC.

[0053] The application of the obtained anthraquinone-2,3-dicarboxylate calcium coordination polymer as the positive electrode material of lithium ion battery:

[0054] Pour anthraquinone-2,3-dicarboxylate calcium coordination polymer, acetylene black and polyvinylidene fluoride i...

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Abstract

The invention belongs to the field of lithium ion battery materials, and discloses an application of an anthraquinone-2, 3-dicarboxylic acid calcium coordination polymer as a lithium ion battery positive electrode material. The preparation method comprises the following steps: adding calcium acetate into a closed reactor filled with deionized water, adding anthraquinone-2, 3-dicarboxylic acid, uniformly mixing, heating to 90-120 DEG C, carrying out hydrothermal reaction, separating out yellow crystals after the reaction is completed, and centrifuging, washing and drying the crude product to obtain the anthraquinone-2, 3-dicarboxylic acid calcium coordination polymer. The anthraquinone-2, 3-dicarboxylic acid calcium coordination polymer prepared by the method is of a three-dimensional spacestructure, the three-dimensional rigid structure is relatively stable, and the valence state of calcium ions is not changed in the charging and discharging process, so that the structure of the polymer can be kept stable in the charging and discharging process, and the polymer is not easy to dissolve in an electrolyte. As a lithium ion positive electrode material, the material has significantly improved cycling stability.

Description

technical field [0001] The invention belongs to the field of lithium ion battery materials, and in particular relates to the application of an anthraquinone-2,3-dicarboxylate calcium coordination polymer as a lithium ion battery cathode material. Background technique [0002] Inorganic lithium-ion electrode raw material resources are limited and expensive, which increases the cost of lithium-ion batteries and limits their large-scale application. In view of the various disadvantages of inorganic electrode materials, organic electrode materials have high theoretical specific capacity, structural diversity, renewability, pollution-free, environment-friendly, and these materials can be obtained from renewable resources, which has led to research on lithium ion electrode materials. attention. [0003] 2,3-Dicarboxylic anthraquinone has good electrochemical performance. However, small organic molecules are easily dissolved in the electrolyte, resulting in poor cycle performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00H01M4/60H01M10/0525
CPCC08G83/008H01M4/606H01M10/0525H01M2004/028Y02E60/10
Inventor 曾荣华陈凤花
Owner SOUTH CHINA NORMAL UNIVERSITY