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Preparation method and application of a carbon cloth in-situ structure double oxide self-supporting battery electrode material

A double oxide and battery electrode technology, applied in battery electrodes, active material electrodes, nanotechnology for materials and surface science, etc., to increase the collision probability, inhibit volume expansion, and improve the electrochemical reaction kinetics

Active Publication Date: 2021-05-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently there is no Sb 2 o 4 / SiO 2 / Related reports on the preparation technology of carbon cloth self-supporting electrode materials

Method used

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  • Preparation method and application of a carbon cloth in-situ structure double oxide self-supporting battery electrode material
  • Preparation method and application of a carbon cloth in-situ structure double oxide self-supporting battery electrode material
  • Preparation method and application of a carbon cloth in-situ structure double oxide self-supporting battery electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1: Take 0.31g of sodium silicate nonaqueous water and 0.57g of antimony trichloride into the reaction lined kettle, and add 40ml of deionized water at the same time and stir it with a glass rod to dissolve it;

[0034] Step 2: Arrange carbon with a size of 4cm×2cm in 20g / L ammonium dihydrogen phosphate aqueous solution. After anodizing for 3 minutes, wash it repeatedly with deionized water and absolute ethanol and arrange the dried carbon in the solution Dipping for 30min;

[0035] Step 3: Put the lid of the inner kettle into the outer kettle and fix it in the homogeneous reactor, and heat it from room temperature to 180°C for 48 hours in a rotating state;

[0036] Step 4: After the hydrothermal reaction is over, cool the reactor to room temperature naturally, then take out the cooled carbon cloth after the reaction, wash it repeatedly with ethanol and deionized water until it is clean, and keep it in an oven at 60°C for 8 hours to obtain the product The prepared ...

Embodiment 2

[0042] Step 1: Take 0.31g of sodium silicate nonaqueous water and 0.57g of antimony trichloride into the reaction lined kettle, and add 40ml of deionized water at the same time and stir it with a glass rod to dissolve it;

[0043] Step 2: Arrange carbon with a size of 4cm×2cm in 20g / L ammonium dihydrogen phosphate aqueous solution. After anodizing for 3 minutes, wash it repeatedly with deionized water and absolute ethanol and arrange the dried carbon in the solution Dipping for 30min;

[0044] Step 3: Put the buckle cover of the inner kettle into the outer kettle and fix it in the homogeneous reactor, and heat it from room temperature to 180°C under the rotating state for 72 hours of hydrothermal reaction;

[0045] Step 4: After the hydrothermal reaction is over, cool the reactor to room temperature naturally, then take out the cooled carbon cloth after the reaction, wash it repeatedly with ethanol and deionized water until it is clean, and keep it in an oven at 60°C for 12 ho...

Embodiment 3

[0048] Step 1: Take 0.16g of sodium silicate nonaqueous water and 0.3g of antimony trichloride into the reaction lined kettle, and add 20ml of deionized water at the same time and stir it with a glass rod to dissolve it;

[0049] Step 2: Arrange carbon with a size of 4cm×2cm in 20g / L ammonium dihydrogen phosphate aqueous solution. After anodizing for 5 minutes, wash it repeatedly with deionized water and absolute ethanol and arrange the dried carbon in the solution Dipping for 10min;

[0050] Step 3: Put the lid of the inner kettle into the outer kettle and fix it in the homogeneous reactor, and heat it from room temperature to 180°C for 48 hours in a rotating state;

[0051] Step 4: After the hydrothermal reaction, cool the reactor to room temperature naturally, then take out the cooled carbon cloth after the reaction, wash it repeatedly with ethanol and deionized water until it is clean, and keep it in an oven at 100°C for 4 hours to obtain the product Antimony tetraoxide / s...

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Abstract

A preparation method and application of a carbon cloth in-situ structure double oxide self-supporting battery electrode material, taking sodium silicate nonaqueous and antimony trichloride and adding them to deionized water, ethanol or a mixed solvent thereof to dissolve them, and then The pretreated carbon is placed in the solution for hydrothermal reaction. Then the cooled carbon cloth after the reaction is taken out, rinsed and dried to obtain the carbon cloth in-situ structure double oxide self-supporting battery electrode material. The material prepared according to the above preparation method is that nano-scale silicon dioxide particles are coated on the outside of antimony tetroxide with micron-scale bunch-shaped flowers that are cracked at both ends, and they grow together on carbon cloth, and the size of the flowers is affected by water. The effect of thermal reaction time and the mass ratio of added sodium silicate nonahydrate and antimony trichloride. Application of antimony tetraoxide / silicon dioxide / carbon cloth double oxide self-supporting battery electrode materials in lithium / sodium ion batteries. The application is a self-supporting anode material for lithium / sodium ion batteries, which exhibits excellent electrochemical performance.

Description

technical field [0001] The invention belongs to the technical field of energy storage materials, and in particular relates to a preparation method and application of a double oxide self-supporting battery electrode material constructed in situ by carbon cloth. Background technique [0002] As important energy storage devices, lithium-ion batteries and sodium-ion batteries are closely related to people's life and work. It is particularly important to develop high-capacity electrode materials and maximize their energy storage performance. In the development of various anode materials, silicon dioxide (SiO 2 ) is rich in reserves in the earth's crust, low in cost, and environmentally friendly, and has a capacity of 1965mAh.g in the negative electrode of lithium-ion batteries -1 theoretical specific capacity. Most importantly, it was found that the addition of SiO 2 The electrode materials show good cycle stability, which may be related to the in situ generated Li during the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/48H01M4/62H01M10/0525H01M10/054B82Y30/00
CPCB82Y30/00H01M4/483H01M4/628H01M10/0525H01M10/054H01M2004/021H01M2004/027Y02E60/10
Inventor 费杰王娜许占位杨甜黄剑锋曹丽云李嘉胤
Owner SHAANXI UNIV OF SCI & TECH
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