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Alpha-ZnMoO4 anode material for lithium-ion battery and preparation method of Alpha-ZnMoO4 anode material

A technology for lithium ion batteries and negative electrode materials, which is applied in battery electrodes, secondary batteries, chemical instruments and methods, etc., can solve the problems of low specific capacity of graphite materials, few research reports, and inability to meet the needs of high-capacity lithium ion batteries, etc. Achieve the effect of simple preparation process, high coulombic efficiency, and improved battery performance

Inactive Publication Date: 2016-07-06
SHAANXI UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

[0002] Commercial lithium-ion batteries mainly use graphite as the negative electrode material, but the theoretical specific capacity of graphite material is low, only 372mAhg -1 , has been unable to meet the growing demand for high-capacity lithium-ion batteries, so it is urgent to develop a new type of negative electrode material for high-capacity lithium-ion batteries that can replace graphite
[0003] Although more in-depth research has been carried out on transition metal oxides replacing traditional graphite as anode materials for lithium-ion batteries, the research work mainly focuses on simple transition metal oxides, and the application of ternary metal oxide materials as electrode materials in the field of lithium-ion batteries There are relatively few research reports

Method used

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  • Alpha-ZnMoO4 anode material for lithium-ion battery and preparation method of Alpha-ZnMoO4 anode material
  • Alpha-ZnMoO4 anode material for lithium-ion battery and preparation method of Alpha-ZnMoO4 anode material

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preparation example Construction

[0024] A kind of α-ZnMoO 4 The preparation method of lithium ion battery negative electrode material, comprises the following steps:

[0025] Step 1: Dissolve the zinc salt and molybdate with a molar ratio of 1:1 in distilled water respectively, and stir magnetically for 10 minutes to fully dissolve, wherein the molybdate is ammonium molybdate or sodium molybdate, and the zinc salt is zinc nitrate or zinc chloride;

[0026] Step 2: Add the molybdate solution dropwise into the zinc salt solution at a rate of 1-3 mL / min, stir for 30 min, and stand at room temperature for 1-5 days to obtain the zinc molybdate precursor material;

[0027] Step 3: centrifuge the zinc molybdate precursor material obtained in step 2 at 8000-9000r / min for 10-15min, wash it alternately with absolute ethanol and distilled water for 3-6 times, and then dry it in an oven at 60°C. Obtain zinc molybdate precursor;

[0028] Step 4: Put the zinc molybdate precursor obtained in Step 3 into a muffle furnace ...

Embodiment 1

[0031] Step 1: Dissolve zinc nitrate and sodium molybdate with a molar ratio of 1:1 in distilled water respectively, and magnetically stir for 10 minutes to fully dissolve;

[0032] Step 2: adding the molybdate solution dropwise into the zinc salt solution at a rate of 1 mL / min, stirring for 30 min, and standing at room temperature for 5 days to obtain the zinc molybdate precursor material;

[0033] Step 3: Centrifuge the zinc molybdate precursor material obtained in step 2 at 8000r / min for 10 minutes, wash it with absolute ethanol and distilled water alternately for 4 times, and then dry it in an oven at 60°C to obtain the zinc molybdate precursor ;

[0034] Step 4: Put the zinc molybdate precursor obtained in Step 3 into a muffle furnace for heat treatment at 600°C for 3 hours, and then naturally cool to room temperature to obtain α-ZnMoO 4 Lithium-ion battery anode material.

[0035] figure 1 is the prepared α-ZnMoO 4 XRD pattern of lithium-ion battery anode material, f...

Embodiment 2

[0039] Step 1: Dissolve zinc chloride and sodium molybdate with a molar ratio of 1:1 in distilled water respectively, and magnetically stir for 10 minutes to fully dissolve;

[0040] Step 2: adding the sodium molybdate solution dropwise into the zinc chloride solution at a rate of 2 mL / min, stirring for 30 min, and standing at room temperature for 1 d to obtain the zinc molybdate precursor material;

[0041] Step 3: Centrifuge the zinc molybdate precursor material obtained in step 2 at 8500r / min for 10 minutes, wash it alternately with absolute ethanol and distilled water for 5 times, and then dry it in an oven at 60°C to obtain the zinc molybdate precursor ;

[0042] Step 4: Put the zinc molybdate precursor obtained in Step 3 into a muffle furnace for heat treatment at 500°C for 3 hours, and then naturally cool to room temperature to obtain α-ZnMoO 4 Lithium-ion battery anode material.

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Abstract

The invention discloses an Alpha-ZnMoO4 anode material for a lithium-ion battery and a preparation method of the Alpha-ZnMoO4 anode material. The method comprises the following steps of dissolving a zinc salt and molybdate into distilled water at the molar ratio of 1 to 1 separately; dropwise adding the molybdate solution into the zinc salt solution and further stirring and mixing the solutions evenly; standing for reaction at a room temperature and centrifuging the mixed solution after reaction is ended; and washing and drying taken solid phase, and burning the solid phase in a high temperature furnace to obtain the Alpha-ZnMoO4 anode material for the lithium-ion battery. The preparation method is simple, convenient, high in yield and low in cost and good in crystallinity; and the prepared Alpha-ZnMoO4 anode material for the lithium-ion battery has a wide development prospect.

Description

technical field [0001] The invention relates to a preparation method of a lithium ion battery negative electrode material, in particular to an α-ZnMoO 4 Lithium-ion battery negative electrode material and preparation method thereof. Background technique [0002] Commercial lithium-ion batteries mainly use graphite as the negative electrode material, but the theoretical specific capacity of graphite material is low, only 372mAhg -1 , has been unable to meet the growing demand for high-capacity lithium-ion batteries, so it is urgent to develop a new type of negative electrode material for high-capacity lithium-ion batteries that can replace graphite. [0003] Although more in-depth research has been carried out on transition metal oxides replacing traditional graphite as anode materials for lithium-ion batteries, the research work mainly focuses on simple transition metal oxides, and the application of ternary metal oxide materials as electrode materials in the field of lithi...

Claims

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Application Information

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IPC IPC(8): H01M4/58H01M10/0525C01G39/00
CPCC01G39/00H01M4/5825H01M10/0525Y02E60/10
Inventor 费杰孙谦谦黄剑锋刘一军李嘉胤曹丽云欧阳海波孔新刚
Owner SHAANXI UNIV OF SCI & TECH
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