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Preparation method of Ce-Li-MOF lithium ion battery negative electrode material and application in lithium ion battery preparation thereof

A technology for lithium ion batteries and negative electrode materials, which is applied in battery electrodes, electrolyte battery manufacturing, secondary batteries, etc., and can solve problems such as rare electrochemical

Inactive Publication Date: 2019-06-11
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Ln-MOFs have shown particularly outstanding value for fluorescence emission, but rarely reported for electrochemical

Method used

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  • Preparation method of Ce-Li-MOF lithium ion battery negative electrode material and application in lithium ion battery preparation thereof
  • Preparation method of Ce-Li-MOF lithium ion battery negative electrode material and application in lithium ion battery preparation thereof
  • Preparation method of Ce-Li-MOF lithium ion battery negative electrode material and application in lithium ion battery preparation thereof

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Experimental program
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Embodiment 1

[0030] The preparation method of Ce-Li-MOF lithium-ion battery negative electrode material is implemented according to the following steps:

[0031] Step 1: pyromellitic acid (0.5032g), Ce(SO 4 ) 2 ˑ4H 2 O (0.7875g) and LiOH (0.2476g) were loaded into a polytetrafluoroethylene reactor, then 18.05g of deionized water was added, stirred at room temperature for 30 minutes, then the reactor was sealed and transferred to a preheated 200 ℃ oven, 200 ℃ constant temperature 72h. The oven was naturally cooled to room temperature, the solid product was rinsed with deionized water (100 mL) three times and ultrasonically cleaned, and then filtered to obtain light yellow crystalline particles, which were dried under natural environmental conditions to obtain Ce-Li-MOF materials.

[0032]Step 2: The application of the above-mentioned Ce-Li-MOF lithium-ion battery negative electrode material in the preparation of lithium-ion batteries is implemented as follows: the electrode active materi...

Embodiment 2

[0035] The preparation method of Ce-Li-MOF lithium-ion battery negative electrode material is implemented according to the following steps:

[0036] Step 1: pyromellitic acid (0.5905g), Ce(SO 4 ) 2 ˑ4H 2 O (0.7908g) and LiOH (0.2506g) were loaded into a polytetrafluoroethylene reactor, then 19.07g of deionized water was added, stirred at room temperature for 30 minutes, then the reactor was sealed and transferred to a preheating 190 ℃ oven, 190 ℃ constant temperature 71h. The oven was naturally cooled to room temperature, the solid product was rinsed with deionized water (100 mL) three times and ultrasonically cleaned, and then filtered to obtain light yellow crystalline particles, which were dried under natural environmental conditions to obtain Ce-Li-MOF materials.

[0037] Step 2: The application of the above-mentioned Ce-Li-MOF lithium-ion battery negative electrode material in the preparation of lithium-ion batteries is implemented as follows: the electrode active mate...

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Abstract

The invention belongs to the field of functional material preparation, and specifically relates to a preparation method of a Ce-Li-MOF lithium ion battery negative electrode material and an application in the lithium ion battery preparation thereof. The method is implemented in the following steps: (1) dispersing pyromellitic acid, cerium sulfate and lithium hydroxide in an aqueous solution, placing the above aqueous solution in a reaction kettle, and performing stirring under the air atmosphere at room temperature to obtain an orange-brown slurry material; (2) transferring the product obtained in step (1) to a high pressure reaction kettle, performing a heating reaction, and performing natural cooling to room temperature to obtain pale-yellow transparent crystals; and (3) washing the product obtained in step (2) with deionized water, and performing drying under natural conditions to obtain the Ce-Li-MOF lithium ion battery negative electrode material. The method has good reproducibility, the morphology structure of the target product is ideal, and the prepared button battery has outstanding electrochemical performances.

Description

technical field [0001] The invention belongs to the field of preparation of functional materials, and in particular relates to a preparation method of a Ce-Li-MOF lithium ion battery negative electrode material and its application in the preparation of lithium ion batteries. Background technique [0002] Lithium-ion batteries are widely used in mobile phones, notebook computers, satellites, and transportation. They are a very promising power source. The materials of lithium-ion batteries depend on a variety of chemical reactions. At present, they are mainly based on inorganic materials and are used more Many materials include carbon materials, alloy materials and organic materials such as conjugated conducting polymers, sulfur-containing molecules, and metal-organic frameworks. With the reduction of fossil fuels, lithium-ion batteries have attracted increasing attention worldwide due to their advantages such as high energy density, long cycle life, low cost, and flexibility ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00H01M4/60H01M10/0525H01M10/058
CPCY02E60/10Y02P70/50
Inventor 宋晓艺史发年田波史桂梅徐舸
Owner SHENYANG POLYTECHNIC UNIV
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