Transition Sn-based heterojunction material@spherical high polymer, and preparation method and application thereof

A polymer and heterojunction technology, applied in structural parts, active material electrodes, electrical components, etc., can solve the problems of insufficient capacity requirements and cycle performance, high cost, save heat loss, strong crystallinity, and reaction rate. quick effect

Pending Publication Date: 2020-06-19
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are still many problems to be solved, such as: high cost, capacity requirements and insufficient cycle performance, which makes us focus on developing suitable battery materials

Method used

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  • Transition Sn-based heterojunction material@spherical high polymer, and preparation method and application thereof
  • Transition Sn-based heterojunction material@spherical high polymer, and preparation method and application thereof
  • Transition Sn-based heterojunction material@spherical high polymer, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Disperse 2.5 g of glucose hydrothermally obtained at 180° C. in ethanol, stir first for 3 hours, and then ultrasonicate for 1 hour to make it uniformly dispersed.

[0027] 2) above-mentioned solution, under the action of magnetic stirring, add the solid powder of tin tetrachloride pentahydrate of 0.25g, magnetic stirring 6 hours, be denoted as solution A;

[0028] 3) The above solution A is kept in a state of stirring, and 0.40 g of thioacetamide is added therein, which is denoted as solution B;

[0029] 4) The other magnetic stirrer was adjusted to the heating state, and the temperature was raised to 55 degrees Celsius and maintained.

[0030] 5) Put solution B on a magnetic stirrer with a set temperature, and heat until the ethanol is basically evaporated to dryness, add 50 ml of ethanol, and heat for 20 min, which is recorded as solution C.

[0031] 6) After the reaction is over, collect solution C, wash it by centrifugation with deionized water and anhydrous eth...

Embodiment 2

[0034] 1) Disperse 2.5 g of glucose hydrothermally obtained at 180° C. in ethanol, stir first for 3 hours, and then ultrasonicate for 1 hour to make it uniformly dispersed.

[0035] 2) above-mentioned solution, under the action of magnetic stirring, add the solid powder of tin tetrachloride pentahydrate of 0.35g, magnetic stirring 6 hours, be recorded as solution A;

[0036] 3) The above solution A is kept in a state of stirring, and 0.40 g of thioacetamide is added therein, which is denoted as solution B;

[0037] 4) The other magnetic stirrer was adjusted to the heating state, and the temperature was raised to 55°C and maintained.

[0038] 5) Put solution B on a magnetic stirrer with a set temperature, and heat until the ethanol is basically evaporated to dryness, add 50 ml of ethanol, and heat for 20 min, which is recorded as solution C.

[0039] 6) After the reaction is over, collect solution C, wash it by centrifugation with deionized water and anhydrous ethanol, set the...

Embodiment 3

[0042] 1) Disperse 2.5 g of glucose hydrothermally obtained at 180° C. in ethanol, stir first for 3 hours, and then ultrasonicate for 1 hour to make it uniformly dispersed.

[0043] 2) above-mentioned solution, under the action of magnetic stirring, add the solid powder of tin tetrachloride pentahydrate of 0.35g, magnetic stirring 6 hours, be recorded as solution A;

[0044] 3) The above solution A is kept in a state of stirring, and 0.40 g of thioacetamide is added therein, which is denoted as solution B;

[0045] 4) The other magnetic stirrer was adjusted to the heating state, and the temperature was raised to 75°C and maintained.

[0046] 5) Put solution B on a magnetic stirrer with a set temperature, heat until the ethanol is basically evaporated to dryness, add 100 ml of ethanol, heat for another 20 min, and denote it as solution C.

[0047] 6) After the reaction is over, collect solution C, wash it by centrifugation with deionized water and anhydrous ethanol, set the ce...

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Abstract

The invention discloses a transition Sn-based heterojunction material@spherical high polymer, and a preparation method thereof and application thereof. The preparation method comprises the following steps: adding a spherical high polymer obtained by hydrothermal reaction of glucose into ethanol, adding SnCl4.5H2O, stirring for a certain time, and adding thioacetamide; and heating, adding ethanol at intervals, taking out a precursor after the reaction is finished, and carrying out centrifugal washing and vacuum drying to obtain a composite material. The preparation method is low in preparationcost, simple to operate and short in preparation period, and the prepared material is high in purity, high in crystallinity and uniform in morphology and has certain charge-discharge cycle performancewhen applied to a negative electrode of a sodium-ion battery.

Description

technical field [0001] The invention belongs to the field of preparation of negative electrode materials for sodium ion batteries, and in particular relates to a transition Sn-based heterojunction material@spherical polymer, a preparation method and an application in a sodium electric negative electrode material. Background technique [0002] Na-ion batteries mainly rely on the deintercalation of sodium ions between the positive and negative electrodes to provide capacity. In addition, it has the advantages of high operating voltage, large specific capacity, small self-discharge, and no memory effect. In the future, sodium-ion batteries can replace lithium ions and become the main direction of future secondary battery development. In this context, sodium-ion batteries have received extensive attention from researchers, governments and enterprises around the world in recent years, and research on key materials and related technologies has developed rapidly. However, there ar...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/58H01M4/60H01M10/054
CPCH01M4/362H01M4/582H01M4/602H01M10/054H01M2004/027Y02E60/10
Inventor 王赪胤刘志刚
Owner YANGZHOU UNIV
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