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Production and preparation method of anti-oxidation stabilizing agent for lithium ion diaphragm pore-forming oil

A technology of anti-oxidation and stabilizer, which is applied in the field of production and preparation of anti-oxidative stabilizer for pore-forming oil of lithium ion diaphragm, can solve the problems of changing oil properties, insufficient oxidation stability, and need to improve chemical stability, and achieves chemical stability. The effect of improving the property and improving the dispersibility

Pending Publication Date: 2021-09-28
江苏品和石油科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing white oil used in the production of lithium-ion diaphragm pore-forming oil has insufficient anti-oxidation stability, and its chemical stability needs to be improved. After further production of white oil, its oxidation stability is insufficient, and the performance of the oil will change after being left for a long time

Method used

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  • Production and preparation method of anti-oxidation stabilizing agent for lithium ion diaphragm pore-forming oil
  • Production and preparation method of anti-oxidation stabilizing agent for lithium ion diaphragm pore-forming oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A production and preparation method of an antioxidant stabilizer for lithium ion membrane pore-forming oil, comprising the following preparation steps:

[0047] ⑴Preparation of main antioxidant stabilizer:

[0048] Add 1 part of diethyl terephthalate, 7 parts of ethylene glycol, 10 parts of polyethylene glycol successively in the reaction kettle, N 2Under protection, heat up to 60°C at 5°C / min, stir at 200r / min for 30min to form a homogeneous mixed liquid, then add 30 parts of carbon-4,4-diisoidene-fatty alcohol-phosphate chelate, stir for 3h, then add With 5 parts of N-aminoethylpiperazine and 70 parts of ethyl acetate, the temperature was gradually increased to 100 °C at 5 °C / min. When the reflux phenomenon occurred, the heat preservation and reflux reaction was carried out for more than 3 hours to meet the predetermined requirements, and then the stirring was stopped and gradually returned to room temperature. At the same time collect the distillate for later use; ...

Embodiment 2

[0067] A production and preparation method of an antioxidant stabilizer for lithium ion membrane pore-forming oil, comprising the following preparation steps:

[0068] ⑴Preparation of main antioxidant stabilizer:

[0069] Add 5 parts of diethyl terephthalate, 10 parts of ethylene glycol, and 15 parts of polyethylene glycol to the reaction kettle in sequence. Under the protection of N2, the temperature is raised to 60 °C at 5 °C / min, and stirred at 300 r / min for 30 min to form a homogeneous mixture. Add 45 parts of carbonyl-4,4-diisoylidene-fatty alcohol-phosphate chelate after stirring for 3 hours, add 10 parts of polyamine compound and 90 parts of ethyl acetate, and gradually raise the temperature to 120 at 5°C / min ℃, when the reflux phenomenon occurs, keep warm and reflux for more than 3 hours to meet the established requirements, stop stirring and gradually return to room temperature, and collect distillates for later use;

[0070] ⑵Preparation of Auxiliary Antioxidant Sta...

Embodiment 3

[0088] A production and preparation method of an antioxidant stabilizer for lithium ion membrane pore-forming oil, comprising the following preparation steps:

[0089] ⑴Preparation of main antioxidant stabilizer:

[0090] In the reactor, add 3 parts of diethyl terephthalate, 8 parts of ethylene glycol, 13 parts of polyethylene glycol successively, N 2 Under protection, heat up to 60°C at 5°C / min, stir at 250r / min for 30min to form a homogeneous mixed solution, then add 40 parts of carbon-4,4-diisoidene-fatty alcohol-phosphate chelate, stir for 3h and then add 5-10 parts of polyamine compound and 80 parts of ethyl acetate, the temperature is gradually raised to 110 °C at 5 °C / min, when the reflux phenomenon occurs, the heat preservation and reflux reaction for more than 3 hours reaches the set requirements, then stop stirring and gradually return to room temperature, and collect Distillate for use;

[0091] ⑵Preparation of Auxiliary Antioxidant Stabilizer:

[0092] Mix 8 par...

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Abstract

The invention discloses an anti-oxidation stabilizing agent for lithium ion diaphragm pore-forming oil. A main anti-oxidation stabilizing agent, an auxiliary anti-oxidation stabilizing agent and an intermediate are prepared, after the main anti-oxidation stabilizing agent is prepared, the auxiliary anti-oxidation stabilizing agent is prepared and modified, the dispersity is improved, the intermediate is used for combining the main anti-oxidation stabilizing agent and the auxiliary anti-oxidation stabilizing agent, and finally the anti-oxidation stabilizing agent is prepared. The preparation method solves the problems that the existing white oil for producing the lithium ion diaphragm pore-forming oil is insufficient in anti-oxidation stability, the chemical stability needs to be improved, the oxidation stability is insufficient after the white oil is further produced, and the performance of an oil product is changed after the white oil is placed for a long time.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a production and preparation method of an antioxidant stabilizer for lithium ion diaphragm pore-forming oil. Background technique [0002] In recent years, lithium-ion batteries have developed rapidly due to their excellent electrical properties such as high energy density, long cycle life and high voltage. Lithium-ion batteries are composed of positive and negative electrodes, electrolytes, and separators. One of the important functions of the separator is to isolate the positive and negative electrodes and prevent the passage of the battery, while allowing the passage of ions, thereby completing the process of lithium ions in the electrochemical charge and discharge process. Fast transmission between positive and negative poles. The performance of the separator directly affects the discharge capacity and cycle life of the battery. [0003] As a polymer functiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K15/32H01M50/40H01M10/0525
CPCC09K15/32H01M50/40H01M10/0525Y02E60/10
Inventor 周鑫游江海刘润杰杨金兵
Owner 江苏品和石油科技有限公司
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