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Ion battery composite material and preparation method thereof and ion battery

A technology for ion batteries and composite materials, applied in the field of ion battery composite materials and its preparation, and ion batteries, can solve the problems of poor cycle performance, too fast capacity failure of tin dioxide batteries, etc., achieve improved rate performance, and improve electrochemical performance , the effect of inhibiting volume expansion

Active Publication Date: 2019-11-05
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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  • Ion battery composite material and preparation method thereof and ion battery
  • Ion battery composite material and preparation method thereof and ion battery
  • Ion battery composite material and preparation method thereof and ion battery

Examples

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Embodiment 1

[0042] Embodiment 1 of the present application provides the 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 down to room temperature, the obtained precipitate was centrifugally 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 mill tank for 30min intermittent ball milling, after 30h, add 0.093g of carbon black and continue ball milling for 5h to obtain an ion battery composite material.

[0045] Carry out SEM and XRD test to the ion battery composite material that makes,...

Embodiment 2

[0049] The embodiment of the present application provides the 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 down to room temperature, the obtained precipitate was centrifugally 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 mill tank for 30min intermittent ball milling, after 30h, add 0.093g of carbon black and continue ball milling for 5h to obtain an ion battery composite material.

[0052] 3. Mix the ion battery composite material, acetylene black and binder (PV...

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Abstract

The invention belongs to the technical field of battery materials, and particularly relates to an ion battery composite material and a preparation method thereof and an ion battery. The application provides an ion battery composite material, which includes a composite particulate matter formed by compositing molybdenum trioxide on tin dioxide particles. The ion battery composite material is prepared by loading the composite particulate matter on a carbon material. The application also provides a preparation method of the ion battery composite material, which comprises the following steps: S1,mixing tin dioxide precursor particles with molybdenum trioxide to obtain a composite particulate matter; and S2, mixing the composite particulate matter with a carbon material to obtain the ion battery composite material. By adopting the ion battery composite material provided by the application, the volume expansion effect of the tin dioxide battery negative electrode material in the process ofcharging and discharging is overcome, and the technical problems of excessive capacity depletion and poor cycle performance of tin dioxide batteries are solved.

Description

technical field [0001] 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. Background technique [0002] With the development of microelectronics technology in the 21st century, miniaturized equipment is increasing day by day, which puts forward high requirements for power supply. The battery has entered a large-scale practical stage. Due to its high energy density, fast charging and discharging performance, good cycle life, reliable safety and other characteristics, ion batteries have been widely used in portable electrical appliances such as laptop computers, cameras, and mobile communications due to their unique performance advantages. The currently developed large-capacity ion batteries have been used in electric vehicles and are expected to become one of the main power sources for electric vehicles in the 21st century, and will be used in sate...

Claims

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Application Information

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Patent Type & Authority Applications(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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