Preparation method of Sb2O5/GO/carbon cloth electrode material for negative electrode of carbon cloth-based flexible sodium ion battery

A sodium-ion battery, carbon cloth electrode technology, applied in battery electrodes, negative electrodes, active material electrodes, etc., can solve problems that have not been reported yet

Active Publication Date: 2019-09-06
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen that Sb can be improved by compounding 2 o 3 cycle stability, but currently for high

Method used

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  • Preparation method of Sb2O5/GO/carbon cloth electrode material for negative electrode of carbon cloth-based flexible sodium ion battery
  • Preparation method of Sb2O5/GO/carbon cloth electrode material for negative electrode of carbon cloth-based flexible sodium ion battery
  • Preparation method of Sb2O5/GO/carbon cloth electrode material for negative electrode of carbon cloth-based flexible sodium ion battery

Examples

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Embodiment 1

[0027] A carbon cloth-based flexible sodium-ion battery negative electrode Sb 2 o 5 The preparation method of / GO / carbon cloth electrode material comprises the following steps:

[0028] Step 1: Soak a 4cm-long and 2cm-wide carbon arrangement in 50mL acetone for 72 hours to remove impurities, then wash with deionized water and absolute ethanol until clean, and place it in an oven to dry at 60°C after washing; The carbon cloth is used as the anode, the graphite plate is the cathode, and the 20g / L ammonium dihydrogen phosphate aqueous solution is used as the electrolyte to anodize the carbon cloth, and the electrolysis voltage is 5V for 3 minutes; The carbon cloth is washed until clean, and dried in an oven at 60°C for later use;

[0029] Step 2: Add 3mg of graphene oxide and 0.34g of antimony trichloride to 20mL of absolute ethanol and dissolve to obtain an antimony solution; add 0.6g / mL aqueous sodium hydroxide solution dropwise to the antimony solution and magnetically stir ...

Embodiment 2

[0033] A carbon cloth-based flexible sodium-ion battery negative electrode Sb 2 o 5 The preparation method of / GO / carbon cloth electrode material comprises the following steps:

[0034] Step 1: Soak a carbon arrangement with a length of 4cm and a width of 2cm in 50mL of acetone for 72 hours to remove impurities, and then wash it repeatedly with deionized water and absolute ethanol until it is clean. After washing, place it in an oven at 60°C for drying; after drying The carbon cloth is used as the anode, the graphite plate is the cathode, and the 20g / L ammonium dihydrogen phosphate aqueous solution is used as the electrolyte to anodize the carbon cloth, and the electrolysis voltage is 5V for 5 minutes; The carbon cloth is washed repeatedly until it is clean, and dried in an oven at 60°C for later use;

[0035] Step 2: Add 6mg of graphene oxide and 0.57g of antimony trichloride to 30mL of absolute ethanol and dissolve to obtain an antimony solution; 0.6g / mL of sodium hydroxid...

Embodiment 3

[0039] A carbon cloth-based flexible sodium-ion battery negative electrode Sb 2 o 5 The preparation method of / GO / carbon cloth electrode material comprises the following steps:

[0040] Step 1: Soak a carbon arrangement with a length of 4cm and a width of 2cm in 50mL of acetone for 72 hours to remove impurities, then wash it repeatedly with deionized water and absolute ethanol until it is clean, and place it in an oven to dry at 60°C after washing; The final carbon cloth is used as the anode, the graphite plate is the cathode, and the 20g / L ammonium dihydrogen phosphate aqueous solution is used as the electrolyte to anodize the carbon cloth, and the electrolysis voltage is 5V for 5 minutes; The finished carbon cloth is washed repeatedly until it is clean, and then dried in an oven at 60°C for later use;

[0041] Step 2: Add 10 mg graphene oxide and 0.57 g antimony trichloride to 30 mL of absolute ethanol and dissolve to obtain an antimony solution; 0.6 g / mL aqueous sodium hy...

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Abstract

The invention provides a preparation method of a Sb2O5/GO/carbon cloth electrode material for the negative electrode of a carbon cloth-based flexible sodium ion battery; the preparation method comprises the following steps of step 1, soaking carbon cloth in acetone for impurity removal, and then carrying out washing, positive electrode oxidation treatment, washing and drying; step 2, adding graphene oxide and antimony trichloride into absolute ethyl alcohol to obtain an antimony solution, then adding a sodium hydroxide aqueous solution into the antimony solution, and adjusting the pH value to8-12 to obtain a mixed solution, and soaking the carbon cloth pretreated in the step 1 in the mixed solution; and step 3, transferring the mixed solution obtained in the step 2 and the carbon cloth into a reaction container, and carrying out hydrothermal reaction at 150-180 DEG C, cooling to room temperature after the reaction is ended, taking out the carbon cloth, carrying out cleaning and dryingto obtain the Sb2O5/GO/carbon cloth electrode material for the negative electrode of the sodium ion battery. The Sb2O5/GO/carbon cloth sodium ion battery negative material prepared by the method of the invention shows excellent electrochemical cycling performance; and meanwhile, the preparation method is simple and novel, short in preparation period, high in repeatability and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of new energy materials, in particular to a carbon cloth-based flexible sodium-ion battery negative pole Sb 2 o 5 / GO / carbon cloth electrode material preparation method. Background technique [0002] Sodium and lithium are in the same main group and have many similar physical and chemical properties. However, because the sodium ion radius (0.113nm) is much larger than the lithium ion radius (0.076nm), some negative electrode materials used in lithium ion batteries are applied to sodium ion batteries, and there will be problems of low capacity, poor rate and short cycle life. Therefore, it is necessary to explore high-performance anode materials for sodium-ion batteries. At present, the research on anode materials for sodium-ion batteries mainly includes carbon materials, alloy materials, metal oxides, phosphorus, etc. Among them, metal oxides have a higher theoretical specific capacity and have attracted widespre...

Claims

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Application Information

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IPC IPC(8): H01M4/1393H01M4/36H01M4/48H01M4/583H01M4/62H01M10/054
CPCH01M4/1393H01M4/362H01M4/483H01M4/583H01M4/625H01M10/054H01M2004/027Y02E60/10
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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