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Preparation method of antimony pentoxide/polyacrylic acid/carbon cloth flexible sodium ion battery negative electrode material with reticulate porous structure

A technology of antimony pentoxide and sodium ion batteries, which is applied in battery electrodes, secondary batteries, structural parts, etc., can solve problems that have not been reported yet, and achieve good mechanical properties, good shape retention, and short production cycles. Effect

Active Publication Date: 2019-09-20
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, Sb 2 o 3 Has a higher theoretical capacity (1102mAhg -1 ), and has been extensively studied, while Sb 2 o 5 There are no reports on battery materials

Method used

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  • Preparation method of antimony pentoxide/polyacrylic acid/carbon cloth flexible sodium ion battery negative electrode material with reticulate porous structure
  • Preparation method of antimony pentoxide/polyacrylic acid/carbon cloth flexible sodium ion battery negative electrode material with reticulate porous structure
  • Preparation method of antimony pentoxide/polyacrylic acid/carbon cloth flexible sodium ion battery negative electrode material with reticulate porous structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of antimony pentoxide / polyacrylic acid / carbon cloth flexible sodium ion battery negative electrode material with mesh porous structure, comprising the following steps:

[0026] Step 1: Soak the hydrophilic carbon cloth with a size of 4cm*2cm in 50mL acetone for 24 hours to remove surface impurities, then wash it repeatedly with deionized water and absolute ethanol, and place the carbon cloth in an oven at 60°C to dry Dry; then put the dried carbon cloth into 1mg / mL polyacrylic acid aqueous solution and keep it for 1h for coating treatment, wash it repeatedly with deionized water and absolute ethanol respectively, place the carbon cloth in an oven at 60°C and then dry it ; Wherein, polyacrylic acid average molecular weight is 1250000;

[0027] Step 2: Add 0.3 g of antimony trichloride to 20 mL of absolute ethanol and stir magnetically to form an antimony trichloride solution, add 0.06 g / mL of sodium hydroxide aqueous solution to the antimony trichlor...

Embodiment 2

[0030] A preparation method of antimony pentoxide / polyacrylic acid / carbon cloth flexible sodium ion battery negative electrode material with mesh porous structure, comprising the following steps:

[0031]Step 1: Soak the hydrophilic carbon cloth with a size of 4cm*2cm in 50mL acetone for 36 hours to remove surface impurities, then wash it repeatedly with deionized water and absolute ethanol, and place the carbon cloth in an oven at 60°C to dry Dry; then place the dried carbon cloth into 3mg / mL polyacrylic acid aqueous solution for 1h for coating treatment, wash it repeatedly with deionized water and absolute ethanol respectively, place the carbon cloth in an oven at 60°C and then dry it ; Wherein, polyacrylic acid average molecular weight is 1250000;

[0032] Step 2: Add 0.57g antimony trichloride to 20mL of absolute ethanol and stir magnetically to form an antimony trichloride solution, add 0.08g / mL sodium hydroxide aqueous solution to the antimony trichloride solution to adj...

Embodiment 3

[0035] A preparation method of antimony pentoxide / polyacrylic acid / carbon cloth flexible sodium ion battery negative electrode material with mesh porous structure, comprising the following steps:

[0036] Step 1: Soak the hydrophilic carbon cloth with a size of 4cm*2cm in 50mL acetone for 72 hours to remove surface impurities, then wash it repeatedly with deionized water and absolute ethanol, and place the carbon cloth in an oven at 60°C to dry Dry; then place the dried carbon cloth into a 6mg / mL polyacrylic acid aqueous solution for 3 hours for coating treatment, wash it repeatedly with deionized water and absolute ethanol respectively, and place the carbon cloth in an oven at 60°C for further coating. drying; wherein, the average molecular weight of polyacrylic acid is 1,250,000;

[0037] Step 2: Add 0.57g antimony trichloride to 20mL of absolute ethanol and stir magnetically to form an antimony trichloride solution, add 0.06g / mL sodium hydroxide aqueous solution to the anti...

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Abstract

The invention relates to a preparation method of an antimony pentoxide / polyacrylic acid / carbon cloth flexible sodium ion battery negative electrode material with a reticulate porous structure. The method comprises the following steps: 1, putting carbon cloth into acetone for soaking, cleaning and drying the carbon cloth, putting the dried carbon cloth into a polyacrylic acid aqueous solution for coating, and cleaning and drying the carbon cloth; 2, adding antimony trichloride into absolute ethanol to form an antimony trichloride solution, adding a sodium hydroxide aqueous solution into the antimony trichloride solution to adjust the pH value to obtain a mixed solution, and putting the coated carbon cloth into the mixed solution for soaking; and 3, transferring the carbon cloth and the mixed solution obtained in the step 2 into a reaction kettle for a hydrothermal reaction, cooling to the room temperature, and carrying out cleaning and drying to obtain the antimony pentoxide / polyacrylic acid / carbon cloth flexible sodium ion battery negative electrode material with the reticulate porous structure. The method is simple to operate and good in repeatability; a flexible electrode combines the characteristics of good mechanical property of the carbon cloth and high specific capacity of the antimony pentoxide; and the electrochemical cycling performance of the flexible electrode as the sodium ion battery negative electrode material is improved.

Description

technical field [0001] The invention belongs to the technical field of flexible energy storage materials, and in particular relates to a method for preparing a net-like porous structure antimony pentoxide / polyacrylic acid / carbon cloth flexible sodium-ion battery negative electrode material. Background technique [0002] With the development of flexible and bendable electronic devices, the development of flexible electrode materials with high specific capacity has become an important research direction in the field of energy storage. At present, the main flexible electrode materials usually use carbon materials with good conductivity, such as graphene, carbon nanotubes, carbon cloth, etc. Among them, carbon cloth is widely used as a flexible electrode material substrate because of its good mechanical strength, electrical conductivity and flexibility. In recent years, many researchers have used active materials such as metal oxides on carbon cloth for flexible electrode mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/48H01M4/62H01M10/054
CPCH01M4/366H01M4/483H01M4/622H01M4/625H01M10/054Y02E60/10
Inventor 费杰王娜黄剑锋曹丽云许占位李嘉胤郑欣慧李盟
Owner SHAANXI UNIV OF SCI & TECH
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