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A negative electrode material zns/c-sno for sodium ion battery prepared by using tin mud 2 Methods

A sodium ion battery and negative electrode material technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of expensive SnO2, increased tin anode consumption, and aggravated environmental pollution, so as to improve battery cycle stability and initial The effect of capacity, simple operation process

Active Publication Date: 2021-09-28
NORTHEASTERN UNIV LIAONING
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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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  • A negative electrode material zns/c-sno for sodium ion battery prepared by using tin mud <sub>2</sub> Methods
  • A negative electrode material zns/c-sno for sodium ion battery prepared by using tin mud <sub>2</sub> Methods
  • A negative electrode material zns/c-sno for sodium ion battery prepared by using tin mud <sub>2</sub> Methods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Example 1: Preparation of ZnS / C-SnO using tin mud 2 composite material

[0054] 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 transferred to a reaction kettle for hydrothermal reaction at 180°C for 12 hours, centrifuged-washed-ultrasonic dispersion, washed with distilled water and absolute ethanol three times, respectively, 60 ℃ drying for 12h to obtain a light gray precursor, and then in N 2 Calcined at 750°C for 2 hours in the atmosphere to obtain ZnS / C material.

[0055] 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 a drying box f...

Embodiment 2

[0060] Example 2: Preparation of ZnS / C-SnO using tin mud 2 composite material

[0061] 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 transferred to a reaction kettle for hydrothermal reaction at 180°C for 12 hours, centrifuged-washed-ultrasonic dispersion, washed with distilled water and absolute ethanol three times, respectively, 60 ℃ drying for 12h to obtain a light gray precursor, and then in N 2 Calcined at 750°C for 2 hours in the atmosphere to obtain ZnS / C material.

[0062] 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 a drying box f...

Embodiment 3

[0066] Embodiment 3: Utilize tin mud to prepare ZnS / C-SnO 2 composite material

[0067] 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 transferred to a reaction kettle for hydrothermal reaction at 180°C for 12 hours, centrifuged-washed-ultrasonic dispersion, washed with distilled water and absolute ethanol three times, respectively, 60 ℃ drying for 12h to obtain a light gray precursor, and then in N 2 Calcined at 750°C for 2 hours in the atmosphere to obtain ZnS / C material.

[0068] 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 a drying box ...

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Abstract

The invention relates to a ZnS / C-SnO negative electrode material for sodium ion batteries prepared by utilizing tin mud 2 The method comprises: S1: washing and drying the tin sludge to obtain SnO 2 Materials; S2: Preparation of ZnS / C composite materials by one-step hydrothermal method: hydrothermal reaction is carried out with zinc salt, sulfur source and organic carbon source as raw materials, after the reaction is completed, the precipitation is collected and dried to obtain a composite material precursor, and the composite material The precursor is placed in an inert atmosphere and roasted to obtain a ZnS / C composite material; S3: the SnO prepared in step S1 2 The material is mixed in proportion with the ZnS / C composite material prepared in step S2 to obtain the negative electrode material ZnS / C-SnO for sodium ion battery 2 . The present invention solves the problem that the tin sludge produced in the tinning process has not been properly recycled and reused, and uses the tin sludge to prepare the negative electrode material of the sodium ion battery, which solves the problem of SnO 2 The problem of high cost effectively reduces the cost of raw materials, which is more in line with the concept of low cost of sodium-ion batteries and realizes the comprehensive utilization of resources.

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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Patent Type & Authority Patents(China)
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 LIAONING
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