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Preparation and application of sodium ion secondary battery electrolyte containing graphene oxide

A technology for preparing sodium ion battery and electrolyte, which is applied in the field of preparation and application of electrolyte for sodium ion secondary battery, can solve problems such as the problem of electrode interface of sodium secondary battery, and achieves the advantages of being beneficial to industrial application, easy to obtain raw materials and simple operation. Effect

Pending Publication Date: 2022-06-03
亿恩科天润新能源材料(山东)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For the background technology, the present invention aims to provide the preparation and application of the electrolyte solution of the sodium ion secondary battery containing graphene oxide, so as to solve the problem of the electrode interface of the existing sodium secondary battery. The technical scheme adopted by the present invention is:

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  • Preparation and application of sodium ion secondary battery electrolyte containing graphene oxide

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Embodiment 1

The invention provides a preparation and application method of a graphene oxide-containing sodium ion battery electrolyte. 3 V 2 (PO 4 ) 2 O 2 F) A uniform reduced graphene protective layer is constructed on the surface of the positive electrode sheet and the sodium negative electrode material. The concentration of graphene oxide in tetrahydrofuran organic solvent is 1 mg / ml.

[0020] The graphene oxide-containing sodium-ion battery electrolyte and application of the present embodiment include the following steps:

S1. Weigh 40mg of graphene oxide powder, and measure 40ml of tetrahydrofuran organic solvent, prepare a graphene oxide tetrahydrofuran suspension according to the concentration of 1mg / ml, and add it into a packaged glass reagent bottle.

[0021] S2. The glass reagent bottle containing the graphene oxide tetrahydrofuran suspension described in S1 is heated and ultrasonicated, the ultrasonic temperature is 50° C., the ultrasonic power is 200 W, and the ultrasonic ...

Embodiment 2

The invention provides a method for preparing and applying a graphene oxide-containing sodium ion battery electrolyte. The graphene oxide is dispersed in a methyl vinyl carbonate organic solution, and the concentration of graphene oxide in the methyl vinyl carbonate organic solvent is obtained. 2mg / ml.

[0029] The preparation and application of the graphene oxide-containing sodium-ion battery electrolyte of the present embodiment includes the following steps:

S1. Weigh 80 mg of graphene oxide powder, and measure 40 ml of organic solvent, prepare a graphene oxide methyl vinyl carbonate suspension according to the concentration of 2 mg / ml, and add it into a packaged glass reagent bottle.

[0030] S2. The glass reagent bottle containing the graphene oxide methyl vinyl carbonate suspension described in S1 is heated and ultrasonicated, the ultrasonic temperature is 50° C., the ultrasonic power is 200 W, and the ultrasonic time is 4 h.

[0031] S3. The solution after the ultrasoni...

Embodiment 3

The invention provides a method for preparing and applying a graphene oxide-containing sodium ion battery electrolyte. The graphene oxide powder is dispersed in an ethylene glycol dimethyl ether organic solution, and graphene oxide is dissolved in ethylene glycol dimethyl ether. The concentration in the organic solvent was 0.5 mg / ml.

[0036] The preparation and application of the graphene oxide-containing sodium-ion battery electrolyte of the present embodiment includes the following steps:

S1. Weigh 20mg of graphene oxide powder, and measure 40ml of ethylene glycol dimethyl ether organic solvent, prepare a graphene oxide ethylene glycol dimethyl ether suspension according to the concentration of 0.5mg / ml, and add an encapsulated ethylene glycol dimethyl ether suspension. in glass reagent bottles.

[0037] S2. The glass reagent bottle containing the graphene oxide ethylene glycol dimethyl ether suspension described in S1 is heated and ultrasonicated, the ultrasonic temperatu...

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Abstract

The invention belongs to the field of sodium ion secondary batteries, and particularly discloses preparation and application of a sodium ion secondary battery electrolyte containing graphene oxide. The graphene oxide is dispersed in a common solvent for the sodium-ion battery electrolyte. The invention also discloses a corresponding preparation method which comprises the following steps: firstly, adding the graphene oxide into an organic solvent, and carrying out heating ultrasonic treatment and heating stirring treatment for a certain time to form an organic solvent dispersion liquid of the graphene oxide; and then adding the dispersion liquid into the electrolyte according to a certain proportion to form the sodium-ion battery electrolyte containing graphene oxide. The preparation process is simple, industrial regulation and control are easy, the graphene oxide in the electrolyte can be subjected to reduction reaction on the surfaces of the positive electrode and the negative electrode to form a uniform reduced graphene protection layer, corrosion of the electrolyte to an electrode material is prevented, the electrochemical performance of the electrode is obviously improved, and the cycling stability of the battery is improved.

Description

technical field [0001] The invention belongs to the field of sodium ion secondary batteries, in particular to the preparation and application of a graphene oxide-containing sodium ion secondary battery electrolyte. Background technique [0002] Na-ion secondary batteries can be widely used in portable electronic devices, electric vehicles, and grid energy storage. These applications require Na-ion batteries to have the advantages of high energy and power density, long cycle life, low cost, and environmental protection. Although great progress has been made in this field over the past few decades, further improvements in the electrochemical performance of Na-ion batteries are still needed to meet the growing demand. To date, electrode surface engineering has proven to be one of the most promising strategies to improve the performance of Na-ion secondary batteries, and significant progress in Na-ion secondary batteries has been achieved through rational electrode surface engin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0566H01M10/058H01M10/054
CPCH01M10/0566H01M10/058H01M10/054Y02E60/10Y02P70/50
Inventor 殷其德叶泉粱振洋黄贵祥
Owner 亿恩科天润新能源材料(山东)有限公司
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