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Negative electrode piece of alpha-ZnMoO4 lithium ion battery and preparation method of negative electrode piece

A lithium-ion battery, -znmoo4 technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of organic solvent environment, expensive NMP, high volatilization temperature, etc., to improve performance, promote battery performance, reduce The effect of interface impedance

Inactive Publication Date: 2016-05-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high price of NMP, the high volatilization temperature, and the volatilization of organic solvents will cause certain environmental problems, it is urgent to develop a green and environmentally friendly lithium-ion battery negative electrode.

Method used

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  • Negative electrode piece of alpha-ZnMoO4 lithium ion battery and preparation method of negative electrode piece
  • Negative electrode piece of alpha-ZnMoO4 lithium ion battery and preparation method of negative electrode piece

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preparation example Construction

[0026] A kind of α-ZnMoO 4 The preparation method of lithium-ion battery negative plate, comprises the following steps:

[0027] 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;

[0028] 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;

[0029] 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;

[0030] Step 4: Put the zinc molybdate precursor obtained in Step 3 into a muffle furnace for heat trea...

Embodiment 1

[0034] 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;

[0035] Step 2: adding the sodium molybdate solution dropwise into the zinc nitrate solution at a rate of 1 mL / min, stirring for 30 min, and standing for a reaction at room temperature for 5 days to obtain the zinc molybdate precursor material;

[0036] 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 ;

[0037] 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 materials;

[0038] Step 5: Add α-ZnMoO 4 Mix it with sodium carboxymethyl cellulo...

Embodiment 2

[0042] 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;

[0043] 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;

[0044] 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 ;

[0045] 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 materials;

[0046] Step 5: Add α-ZnMoO 4 Mix it with sodium carboxymethyl cellulose and acetylene b...

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Abstract

The invention discloses a negative electrode piece of an alpha-ZnMoO4 lithium ion battery and a preparation method of the negative electrode piece. The preparation method comprises the following steps: dissolving a zinc salt and molybdate at the mol ratio of 1 to 1 into distilled water respectively; dropwise adding a molybdate solution into the zinc salt solution, and further stirring and uniformly mixing; then standing and reacting at a room temperature; after a reaction is finished, centrifuging; taking a solid phase, and washing and drying; calcining in a high-temperature furnace to obtain a negative electrode material of the alpha-ZnMoO4 lithium ion battery; finally, after mixing the negative electrode material of the alpha-ZnMoO4 lithium ion battery, a binding agent and a conductive agent into paste and coating the paste on a copper foil; and drying and tableting to obtain the negative electrode piece of the alpha-ZnMoO4 lithium ion battery. The preparation method disclosed by the invention is simple and convenient, and has high yield, low cost and good crystallization degree; and the prepared negative electrode piece of the alpha-ZnMoO4 lithium ion battery has a wide development prospect.

Description

technical field [0001] The invention relates to a preparation method of a negative electrode sheet of a lithium ion battery, in particular to an α-ZnMoO 4 Lithium-ion battery negative electrode sheet and preparation method thereof. Background technique [0002] Lithium-ion batteries have been widely used in mobile phones, notebook computers and other fields due to their advantages such as light weight, small size, high working voltage, high energy density, high output power, high charging efficiency and no memory effect. [0003] Lithium-ion batteries usually consist of a positive electrode sheet, a negative electrode sheet, a separator, an electrolyte, and a case. Wherein, the binder is a polymer compound used to adhere the electrode active material to the current collector. Its main function is to bind and maintain the active material, enhance the electronic contact between the electrode active material and the conductive agent and the active material and the current col...

Claims

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Application Information

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IPC IPC(8): H01M4/131H01M4/1391H01M4/48H01M4/62H01M10/0525
CPCH01M4/131H01M4/1391H01M4/48H01M4/621H01M10/0525Y02E60/10
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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