A kind of ion battery composite material and its preparation method and ion battery

A composite material, lithium-ion battery technology, applied in the field of ion battery composite material and its preparation, ion battery, can solve the problems of tin dioxide battery capacity depletion too fast, poor cycle performance, etc., to improve electrochemical performance, specific capacity High, achieve the effect of contact

Active Publication Date: 2021-08-13
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The application provides an ion battery composite material and its preparation method and ion battery, which overcomes the volume expansion effect of the tin dioxide battery negative electrode material in the process of charging and discharging, and effectively solves the problem of excessive capacity failure and cycle failure of the tin dioxide battery. Technical issues with poor performance

Method used

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  • A kind of ion battery composite material and its preparation method and ion battery
  • A kind of ion battery composite material and its preparation method and ion battery
  • A kind of ion battery composite material and its preparation method and ion battery

Examples

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Effect test

Embodiment 1

[0042] Embodiment 1 of the present application provides a first battery, and its preparation method is as follows:

[0043] 1. Add 180ml of absolute ethanol to 220ml of deionized water to make a mixed solution, add 2.4g of urea and 0.95g of potassium stannate trihydrate and stir until completely dissolved. Pour the dissolved solution into a 100ml polytetrafluoroethylene liner, put it into an autoclave for hydrothermal reaction, and keep it at 150°C for 24h. After cooling to room temperature, the obtained precipitate was centrifuged and washed with deionized water, and dried at 80° C. to obtain tin dioxide precursor particles.

[0044] 2. Put 0.26g of tin dioxide precursor particles and 0.019g of molybdenum trioxide into a ball milling jar for 30min intermittent ball milling. After 30h, add 0.093g of carbon black to continue ball milling and continue ball milling for 5h to obtain an ion battery composite material.

[0045] SEM and XRD tests were carried out on the prepared ion...

Embodiment 2

[0049] The embodiment of the present application provides a second battery, and its preparation method is as follows:

[0050] 1. Add 180ml of absolute ethanol to 220ml of deionized water to make a mixed solution, add 2.4g of urea and 0.95g of potassium stannate trihydrate and stir until completely dissolved. Pour the dissolved solution into a 100ml polytetrafluoroethylene liner, put it into an autoclave for hydrothermal reaction, and keep it at 150°C for 24h. After cooling to room temperature, the obtained precipitate was centrifuged and washed with deionized water, and dried at 80° C. to obtain tin dioxide precursor particles.

[0051] 2. Put 0.26g of tin dioxide precursor particles and 0.019g of molybdenum trioxide into a ball milling jar for 30min intermittent ball milling. After 30h, add 0.093g of carbon black to continue ball milling and continue ball milling for 5h to obtain an ion battery composite material.

[0052] 3. Mix the ion battery composite material, acetylen...

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Abstract

The invention belongs to the technical field of battery materials, and in particular relates to an ion battery composite material, a preparation method thereof and an ion battery. The present application provides an ion battery composite material, comprising: molybdenum trioxide compounded on tin dioxide particles to form composite particles, and the composite particles are loaded on carbon materials to prepare the ion battery composite material. The present application also provides a preparation method of an ion battery composite material, comprising the following steps: step 1, mixing tin dioxide precursor particles with molybdenum trioxide to obtain composite particles; step 2, mixing the composite particles and carbon materials , to prepare ion battery composite materials. The ion battery composite material provided by the application overcomes the volume expansion effect of the negative electrode material of the tin dioxide battery during the charging and discharging process, and effectively solves the technical problems of too fast capacity failure and poor cycle performance of the tin dioxide battery.

Description

technical field [0001] The invention belongs to the technical field of battery materials, and particularly relates to an ion battery composite material, a preparation method thereof, and an ion battery. Background technique [0002] With the development of microelectronics technology in the 21st century, the number of miniaturized devices is increasing, which puts forward high requirements for power supply. The battery then entered a large-scale practical stage. Ion batteries have been widely used in portable appliances such as laptop computers, cameras, and mobile communications due to their high energy density, fast charge-discharge performance, good cycle life, and reliable safety. The large-capacity ion battery developed at present has been used in electric vehicles and is expected to become one of the main power sources for electric vehicles in the 21st century, and will be used in satellites, aerospace and energy storage. The anode material plays a crucial role in im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/48H01M4/62H01M10/0525
CPCH01M4/483H01M4/625H01M4/628H01M10/0525H01M2004/027Y02E60/10
Inventor 白晨何苗冯叶锋熊德平
Owner GUANGDONG UNIV OF TECH
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