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A method for preparing nanowire braided spherical antimony selenide sodium ion battery negative electrode material

A technology of sodium antimony selenide and ion batteries, which is applied in the direction of battery electrodes, negative electrodes, secondary batteries, etc., can solve the problems of hindering the research of electrochemical behavior of electrode materials, large environmental pollution, and prone to danger, etc., and achieve excellent electrochemical performance. Performance, temperature range, no water vapor pollution, stable heating effect

Active Publication Date: 2019-03-01
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But for other methods to prepare Sb 2 Se 3 There are relatively few reports on nanomaterials
[0004] Among these preparation methods at present, organic substances such as ethanol, oleylamine, and ethylenediamine, which are often used in solvothermal, are prone to danger during the preparation process, and the production cost is high, and the environmental pollution is relatively large.
The products prepared by the hydrothermal method are mostly one-dimensional structures, which hinder the Sb 2 Se 3 Study on Electrochemical Behavior of Electrode Materials

Method used

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  • A method for preparing nanowire braided spherical antimony selenide sodium ion battery negative electrode material
  • A method for preparing nanowire braided spherical antimony selenide sodium ion battery negative electrode material
  • A method for preparing nanowire braided spherical antimony selenide sodium ion battery negative electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Add polyvinylpyrrolidone and antimony potassium tartrate with an average molecular weight of 30000 to the mixture of ethylene glycol and distilled water, stir (500r / min, 60min) to completely dissolve it, and obtain solution A, in which ethylene glycol and distilled water The volume ratio is V 乙二醇 :V 蒸馏水 =4:1, the concentration of potassium antimony tartrate is 0.001mol / L, the addition of polyvinylpyrrolidone is 0.05g, and the addition of potassium antimony tartrate is 0.0236g;

[0030] 2) Add 0.0179g of sodium selenite into 2mL of hydrazine hydrate with a mass concentration of 50%, stir (500r / min, 20min) to completely dissolve it, and obtain wine red solution B;

[0031] 3) Add the obtained solution B to the solution A dropwise under stirring (500r / min) to obtain the mixed solution C;

[0032]4) First, add three drops (1mL) of glycerin to the mixture C under stirring (500r / min), stir evenly, put it into an oil bath, and isolate the air at a temperature of 80°C for ...

Embodiment 2

[0034] 1) Add polyvinylpyrrolidone and antimony potassium tartrate with an average molecular weight of 30000 to the mixture of ethylene glycol and distilled water, stir (500r / min, 30min) to completely dissolve it, and obtain solution A, the volume of ethylene glycol and distilled water than controlled at V 乙二醇 :V 蒸馏水 =1:1, the concentration of potassium antimony tartrate is 0.005mol / L, the addition of polyvinylpyrrolidone is 0.1g, and the addition of potassium antimony tartrate is 0.1352g;

[0035] 2) Add 0.09g of sodium selenite into 4mL of hydrazine hydrate with a mass concentration of 50%, and stir (500r / min, 20min) to completely dissolve it to obtain wine red solution B;

[0036] 3) Add the obtained solution B to the solution A dropwise under stirring (500r / min) to obtain the mixed solution C;

[0037] 4) First, add three drops of glycerin (1mL) to the mixture C under stirring (700r / min), stir evenly, put it into an oil bath, and isolate the air at a temperature of 100°C...

Embodiment 3

[0039] 1) Add polyvinylpyrrolidone and antimony potassium tartrate with an average molecular weight of 30000 to the mixture of ethylene glycol and distilled water, stir (600r / min, 10min) to completely dissolve it, and obtain solution A, the volume of ethylene glycol and distilled water than controlled at V 乙二醇 :V 蒸馏水 =1:3, the concentration of potassium antimony tartrate is 0.010mol / L, the addition of polyvinylpyrrolidone is 0.15g, and the addition of potassium antimony tartrate is 0.2703g;

[0040] 2) Add 0.2075g of sodium selenite into 6mL of hydrazine hydrate with a mass concentration of 50%, and stir (600r / min, 20min) to completely dissolve it to obtain wine red solution B;

[0041] 3) The obtained solution B was added dropwise to the solution A under the condition of stirring (600r / min) to obtain the mixed solution C;

[0042] 4) First, add three drops of glycerin (1mL) to the mixture C under stirring (700r / min), stir evenly, put it in an oil bath, isolate the air, and ...

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Abstract

The invention provides a method for preparing a nanowire-woven spherical Sb2Se3 (antimony selenide) sodium-ion battery anode material. According to the method, polyvinylpyrrolidone and antimony potassium tartrate are added to a mixed solution of glycol and distilled water and stirred, and a solution A is obtained; sodium selenite is added to hydrazine hydrate and stirred, and a wine red solution B is obtained; the solution B is dropwise added to the solution A with stirring, and a mixed solution C is obtained; glycerinum is added to the mixed solution C, and the mixture is stirred uniformly, reacts under a vacuum condition at the temperature of 80-150 DEG C, left to age for 1-18 h and cooled to the room temperature after the reaction ends; finally, washing and drying are performed, and the nanowire-woven spherical Sb2Se3 sodium-ion battery anode material is obtained. The reaction process for preparation of nanowire-woven spherical Sb2Se3 is completed once, the process equipment is simple, the repetition is good, and the prepared Sb2Se3 electrode material has excellent electrochemical performance.

Description

technical field [0001] The invention relates to a nanowire braided spherical Sb 2 Se 3 The preparation of the method specifically relates to a method for preparing a nanowire-woven spherical antimony selenide sodium ion battery negative electrode material. Background technique [0002] Sb 2 Se 3 It is a simple binary compound with a typical layered structure, a direct bandgap P-type semiconductor, and an energy bandgap of 1.2eV. It has physical properties such as photosensitivity, photoconductivity and thermoelectric effect, and is widely used in the fields of solar cells, photocatalysis and photoelectric conversion. [0003] Currently, the reported preparation of Sb 2 Se 3 The main methods of nanomaterials are solvothermal, hydrothermal, solid phase reaction and so on. Rencheng Jin et al prepared worm-like Sb by solvothermal 2 Se 3 nanomaterials with high hydrogen storage capacity (228.5mAhg -1 ) and good cycle performance. (Jin R, Chen G, Pei J, et al. Controlla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/04H01M4/58H01M10/054
CPCC01B19/007C01P2002/72C01P2004/03C01P2004/17C01P2004/34C01P2004/50C01P2004/62C01P2006/40H01M4/581H01M10/054H01M2004/021H01M2004/027Y02E60/10
Inventor 曹丽云郭玲李嘉胤黄剑锋吴建鹏程娅伊齐慧弓琴琴
Owner SHAANXI UNIV OF SCI & TECH
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