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Method for preparing cathode material ZnS/C-SnO2 of sodium ion battery by utilizing tin sludge

A technology for sodium ion batteries and negative electrode materials, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of expensive SnO2, not properly recycled and reused, and complicated tin oxide production process, and meet performance requirements. , The effect of low equipment cost and mild operating conditions

Active Publication Date: 2019-02-22
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The generation of tin sludge leads to Sn in the bath 2+ The loss increases the consumption of tin anode, which leads to higher production cost
The production of tin sludge means economic loss, and the discharge of tin sludge will definitely aggravate the pollution to the environment
The existing technology is very unsatisfactory for the treatment of tin sludge, and has not been properly recycled and reused
At the same time, the production process of tin oxide is very complicated, resulting in the production of commercial SnO 2 very expensive

Method used

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  • Method for preparing cathode material ZnS/C-SnO2 of sodium ion battery by utilizing tin sludge
  • Method for preparing cathode material ZnS/C-SnO2 of sodium ion battery by utilizing tin sludge
  • Method for preparing cathode material ZnS/C-SnO2 of sodium ion battery by utilizing tin sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1: Preparation of ZnS / C-SnO using tin mud 2 composite material

[0053] ①Using zinc acetate, sodium sulfide and anhydrous glucose as raw materials, weigh 2.153g of C 4 h 6 o 4 Zn·2H 2 O, 4.712g of Na 2 S·9H 2 O and 5.454g of anhydrous glucose were simultaneously dissolved in 150mL of distilled water to form a clear and transparent solution, then moved into a reaction kettle for hydrothermal reaction at 180°C for 12 hours, centrifuged-washed-ultrasonic dispersion, and the precipitate was washed three times with distilled water and absolute ethanol, respectively, 60 ℃ drying for 12h to obtain a light gray precursor, and then in N 2 Calcined at 750°C for 2h in the atmosphere to obtain ZnS / C material.

[0054] ②The viscous tin sludge obtained directly from the production workshop, in order to remove the influence of impurity ions, was cleaned with distilled water / absolute ethanol, and then the solution was centrifuged, washed 3 times repeatedly, and placed in...

Embodiment 2

[0059] Example 2: Preparation of ZnS / C-SnO using tin mud 2 composite material

[0060] ①Using zinc acetate, sodium sulfide and anhydrous glucose as raw materials, weigh 2.153g of C 4 h 6 o 4 Zn·2H 2 O, 4.712g of Na 2 S·9H 2 O and 5.454g of anhydrous glucose were simultaneously dissolved in 150mL of distilled water to form a clear and transparent solution, then moved into a reaction kettle for hydrothermal reaction at 180°C for 12 hours, centrifuged-washed-ultrasonic dispersion, and the precipitate was washed three times with distilled water and absolute ethanol, respectively, 60 ℃ drying for 12h to obtain a light gray precursor, and then in N 2 Calcined at 750°C for 2h in the atmosphere to obtain ZnS / C material.

[0061] ②The viscous tin sludge obtained directly from the production workshop, in order to remove the influence of impurity ions, was cleaned with distilled water / absolute ethanol, and then the solution was centrifuged, washed 3 times repeatedly, and placed in...

Embodiment 3

[0064] Embodiment 3: Utilize tin mud to prepare ZnS / C-SnO 2 composite material

[0065] ①Using zinc acetate, sodium sulfide and anhydrous glucose as raw materials, weigh 2.153g of C 4 h 6 o 4 Zn·2H 2 O, 4.712g of Na 2 S·9H 2 O and 5.454g of anhydrous glucose were simultaneously dissolved in 150mL of distilled water to form a clear and transparent solution, then moved into a reaction kettle for hydrothermal reaction at 180°C for 12 hours, centrifuged-washed-ultrasonic dispersion, and the precipitate was washed three times with distilled water and absolute ethanol, respectively, 60 ℃ drying for 12h to obtain a light gray precursor, and then in N 2 Calcined at 750°C for 2h in the atmosphere to obtain ZnS / C material.

[0066] ②The viscous tin sludge obtained directly from the production workshop, in order to remove the influence of impurity ions, was cleaned with distilled water / absolute ethanol, and then the solution was centrifuged, washed 3 times repeatedly, and placed i...

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Abstract

The invention relates to a method for preparing a cathode material ZnS / C-SnO2 of a sodium ion battery by utilizing tin sludge. The method comprises the following steps: S1, washing and drying tin sludge to obtain an SnO2 material; S2, preparing a ZnS / C composite material by a one-step hydrothermal method, namely performing a hydrothermal reaction by using zinc salt, sulfur source and organic carbon source as raw materials, collecting precipitate and drying to obtain a composite material precursor after the reaction is completed, roasting the composite material precursor in an inertial atmosphere to obtain a ZnS / C composite material; and S3, mixing the SnO2 material prepared in the step S1 with the ZnS / C composite material prepared in the step S2 in a proportion to prepare the cathode material ZnS / C-SnO2 of a sodium ion battery. According to the method, the problem that tin sludge generated in tinning is not properly recycled can be solved, the problem of high cost of SnO2 can be solvedby preparing the cathode material of a sodium ion battery from the tin sludge, the cost for raw materials can be effectively reduced, the concept of low cost for sodium ion batteries can be met, andcomprehensive utilization of resources can be realized.

Description

technical field [0001] The invention relates to the technical field of battery materials, in particular to ZnS / C-SnO, a negative electrode material for sodium ion batteries prepared by using tin mud 2 Methods. Background technique [0002] As an important technology for energy storage and conversion, secondary batteries occupy a very important position in the field of new energy. In order to cope with the energy crisis, it is of great significance to develop efficient and convenient secondary batteries suitable for large-scale energy storage. Due to the scarcity of lithium resources, the price of lithium salt continues to rise and remains high, which will seriously restrict the sustainable development of lithium-ion batteries in the field of energy storage. In contrast, sodium has similar chemical properties to lithium and is extremely rich in sodium, which makes sodium-ion batteries much cheaper than lithium-ion batteries. Therefore, Na-ion batteries are expected to repl...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/485H01M4/58H01M4/587H01M4/62H01M10/054C22B7/00
CPCC22B7/006H01M4/362H01M4/364H01M4/485H01M4/5815H01M4/587H01M4/625H01M10/054Y02E60/10Y02P10/20
Inventor 李建中王颖骆文彬李犁
Owner NORTHEASTERN UNIV
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