Preparation method of nest-like Sb2Se3 electrode material for sodium ion battery negative electrode

A technology for sodium ion batteries and electrode materials, applied in battery electrodes, nanotechnology for materials and surface science, secondary batteries, etc. , High electrochemical capacity, short cycle effect

Active Publication Date: 2017-06-13
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of these organic solvents is prone to danger in the preparation process, and

Method used

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  • Preparation method of nest-like Sb2Se3 electrode material for sodium ion battery negative electrode
  • Preparation method of nest-like Sb2Se3 electrode material for sodium ion battery negative electrode
  • Preparation method of nest-like Sb2Se3 electrode material for sodium ion battery negative electrode

Examples

Experimental program
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Example Embodiment

[0025] Example 1

[0026] 1) Add 0.675g of potassium antimony tartrate to 50mL of deionized water, magnetically stir until potassium antimony tartrate is completely dissolved to obtain mixed solution A, stirring speed is 500r / min, stirring time is 20min;

[0027] 2) Disperse 0.2369g of selenium powder in 3ml of hydrazine hydrate (50% by mass), stir it magnetically for 40min (speed of 500r / min, stirring temperature of 70℃) to obtain mixed solution B;

[0028] 3) Add the mixed liquid B to the mixed liquid A dropwise to obtain the mixed liquid C. Ultrasound the mixed solution C for 90 minutes (ultrasonic power is 80W, ultrasonic temperature is 70 ℃), and then transferred to the PTFE hydrothermal kettle, the PTFE hydrothermal kettle is placed in a homogeneous reactor (Yantai Keli Chemical Equipment Co., Ltd., KLJX-8A), react at 120℃ for 24h, cool to room temperature after the reaction, and then wash several times (washing solvent is acetone, ethanol and distilled water; washing method i...

Example Embodiment

[0031] Example 2

[0032] 1) Add 0.6759g of potassium antimony tartrate to 60mL of deionized water, magnetically stir until potassium antimony tartrate is completely dissolved to obtain mixed solution A, stirring speed is 500r / min, stirring time is 20min;

[0033] 2) Disperse 0.2369g of selenium powder in 5ml of hydrazine hydrate (50% by mass), sonicate for 7min (ultrasonic power is 120W; ultrasonic temperature is 40℃) to obtain mixed solution B;

[0034] 3) Add the mixed liquid B to the mixed liquid A dropwise to obtain the mixed liquid C. The mixture C was magnetically stirred for 3h (speed of 500r / min, stirring temperature of 70 ℃) and then transferred to the PTFE hydrothermal kettle, the PTFE hydrothermal kettle was placed in a homogeneous reactor (Yantai Keli Chemical Equipment Co., Ltd., KLJX-8A) was reacted at 140°C for 18 hours. After the reaction, it was cooled to room temperature and washed several times (the washing solvent was acetone, ethanol and distilled water; the wa...

Example Embodiment

[0037] Example 3

[0038] 1) Add 0.7322g potassium antimony tartrate into 70mL deionized water, magnetically stir until potassium antimony tartrate is completely dissolved to obtain mixed solution A; stirring speed is 500r / min, stirring time is 20min;

[0039] 2) Disperse 0.2566g of selenium powder in 7ml of hydrazine hydrate (50% by mass), and magnetically stir for 20min (speed of 700r / min, stirring temperature of 50℃) to obtain mixed solution B;

[0040] 3) Drop the mixed liquid B into the mixed liquid A dropwise to obtain the mixed liquid C. The mixed solution C was sonicated for 60min (ultrasonic power is 100W; ultrasonic temperature is 50℃) and then transferred to a PTFE hydrothermal kettle, and the PTFE hydrothermal kettle is placed in a homogeneous reactor (Yantai Keli Chemical Equipment Co., Ltd., KLJX-8A), react at a temperature of 150℃ for 12h, cool to room temperature after the reaction, and wash several times (the washing solvent is acetone, ethanol and distilled water; ...

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Abstract

A preparation method of a nest-like Sb2Se3 electrode material for a sodium ion battery negative electrode comprises the following steps: 1) dissolving antimony potassium tartrate into deionized water, and completely stirring to completely dissolve the antimony potassium tartrate to obtain a mixed liquid A; 2) dispersing selenium powder into hydrazine hydrate with mass percentage being 50 percent, and stirring to obtain a mixed liquid B; 3) mixing the obtained mixed liquid B and the mixed liquid A to obtain a mixed liquid C, performing hydrothermal reaction at the temperature of 120 to 180 DEG C for 3 hours to 24 hours, naturally cooling to a room temperature after the reaction, washing and separating precipitate, and freeze-drying the precipitate obtained by separation under the vacuum condition to obtain the Sb2Se3 electrode material. The preparation method is simple in operation, easy in repletion, short in cycle, pollution-free and suitable for large-scale production of the Sb2Se3 electrode materials.

Description

technical field [0001] The invention relates to a kind of bird's nest Sb 2 Se 3 The preparation method of material, be specifically related to a kind of bird's nest shape Sb for sodium ion battery negative electrode 2 Se 3 Preparation method of electrode material. Background technique [0002] In recent years, with the development of social economy, people's demand for materials is increasing. The popularization of various electric vehicles and electronic products has put forward higher requirements for research fields such as energy conversion, energy storage and efficient utilization of energy. Because of its large storage capacity, high theoretical capacity, and similar electrochemical reaction to lithium-ion batteries, sodium-ion batteries have become the most promising substitute for lithium-ion batteries, which are widely used in the market. It is of far-reaching significance to develop a novel, high-capacity and high-stability anode material for Na-ion batteries....

Claims

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Application Information

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IPC IPC(8): H01M10/054H01M4/38B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/38H01M10/054Y02E60/10
Inventor 曹丽云郭玲李嘉胤黄剑锋程娅伊许占位王彩薇康倩
Owner SHAANXI UNIV OF SCI & TECH
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