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A kind of preparation method of manganese dioxide/copper foam sodium ion battery self-supporting negative electrode

A sodium-ion battery, manganese dioxide technology, applied in battery electrodes, secondary batteries, electrode carriers/current collectors, etc., can solve the problems of difficult control of the reaction process, high reaction temperature, long reaction time, etc., to improve rate performance. and cycle performance, high degree of nanometerization, and the effect of optimized bonding state

Active Publication Date: 2019-07-02
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis of manganese dioxide by precipitation method has the disadvantages that the reaction process is not easy to control, side reactions occur, and the purity of the product is low. The hydrothermal synthesis of manganese dioxide has the disadvantages of relatively high reaction temperature and long reaction time.

Method used

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  • A kind of preparation method of manganese dioxide/copper foam sodium ion battery self-supporting negative electrode
  • A kind of preparation method of manganese dioxide/copper foam sodium ion battery self-supporting negative electrode
  • A kind of preparation method of manganese dioxide/copper foam sodium ion battery self-supporting negative electrode

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preparation example Construction

[0028] A preparation method of manganese dioxide / copper foam sodium ion battery self-supporting negative electrode, comprising the following steps:

[0029] 1) Cut the self-supporting substrate sheet-shaped copper foam with a thickness of 1mm into a rectangular copper foam sheet A, making it 4cm long and 2.5cm wide;

[0030] 2) Submerge 0.15-0.45g (i.e. 1-3 tablets) of A in analytically pure acetone and ultrasonically clean it at a frequency of 50KHz for 10-30min, then take out A and rinse it with deionized water for 3 times to obtain B;

[0031] 3) Submerge 0.15-0.45g (i.e. 1-3 tablets) of B in analytically pure anhydrous ethanol, and treat it in an ultrasonic environment with a frequency of 50KHz for 10-30min, then take out B and put it in an oven. Dry at a temperature of ℃ for 30-50 minutes to obtain C;

[0032] 4) Dissolve manganese sulfate in deionized water, and use a magnetic stirrer to stir at a speed of 600-800 rpm for 10-30 minutes to prepare MnSO with a molar conce...

Embodiment 1

[0037] (1) the self-supporting matrix sheet foam copper that thickness is 1mm is cut into rectangular foam copper sheet A, makes its length 4cm, and width is 2.5cm;

[0038] (2) Submerge 0.15 g of A in analytically pure acetone and ultrasonically clean it at a frequency of 50 KHz for 20 minutes, then take out A, and then rinse it with deionized water for 3 times to obtain B;

[0039] (3) Submerge 0.15g of B in analytically pure absolute ethanol, and treat it in an ultrasonic environment with a frequency of 50KHz for 20 minutes, then take out B and put it in an oven, and dry it at 70°C for 40 minutes to obtain C;

[0040] (4) Dissolve manganese sulfate in deionized water, and use a magnetic stirrer to stir for 20 minutes at a speed of 700 rpm to obtain MnSO with a molar concentration of 0.008mol / L 4 Solution D;

[0041] (5) 60mL MnSO4 Solution D is transferred to the hydrothermal induction kettle, and then 0.15g C is put into the direction of the magnetic field line of the ind...

Embodiment 2

[0045] (1) The material self-supporting substrate sheet-shaped copper foam with a thickness of 1mm is cut into a rectangular copper foam sheet A so that its length is 4 cm and its width is 2.5 cm;

[0046] (2) Submerge 0.30 g of A in analytically pure acetone and ultrasonically clean it at a frequency of 50 KHz for 20 minutes, then take out A, and then rinse it with deionized water for 3 times to obtain B;

[0047] (3) Submerge 0.30g of B in analytically pure absolute ethanol, and treat it in an ultrasonic environment with a frequency of 50KHz for 10 minutes, then take out B and put it in an oven, and dry it at 60°C for 30 minutes to obtain C;

[0048] (4) Dissolve manganese sulfate in deionized water, and use a magnetic stirrer to stir at a speed of 600 rpm for 10 min to obtain MnSO with a molar concentration of 0.005 mol / L 4 Solution D;

[0049] (5) 60mL MnSO 4 Solution D was transferred into a hydrothermal induction kettle, and then 0.30 g of C was placed perpendicular to...

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Abstract

The invention discloses a manganese dioxide / copper foam sodium ion battery self-supporting negative pole preparation method. The method comprises the steps that flake copper foam is treated with absolute ethyl alcohol, washed to be clean and dried, and an electrode substrate is obtained; a manganese sulfate solution of a certain concentration is prepared; the obtained solution and a copper foam sheet are put into a hydrothermal reaction kettle, heating and heat preservation are conducted for a certain time through hydrothermal induction heating equipment, and then the manganese dioxide / copper foam sodium ion battery self-supporting negative pole with a three-dimensional porous communicating frame-shaped structure is obtained.

Description

technical field [0001] The invention belongs to the field of preparation of negative poles of sodium ion batteries, and in particular relates to a preparation method of self-supporting negative poles of manganese dioxide / copper foam sodium ion batteries. Background technique [0002] As early as the 1980s, sodium-ion batteries and lithium-ion batteries were researched at the same time. With the successful commercialization of lithium-ion batteries, the research on sodium-ion batteries gradually slowed down. Sodium and lithium belong to the same main group, have similar physical and chemical properties, and the charging and discharging principles of batteries are basically the same. When charging, Na + It comes out of the positive electrode material and is embedded in the negative electrode material through the electrolyte. At the same time, the electrons are transferred to the negative electrode through the external circuit to maintain charge balance; the opposite is true w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/1391H01M4/80H01M4/66H01M4/50H01M10/054
CPCH01M4/1391H01M4/50H01M4/661H01M4/808H01M10/054H01M2004/021Y02E60/10
Inventor 黄剑锋李瑞梓焦冰玉李嘉胤何元元党欢李春光陈文卓
Owner SHAANXI UNIV OF SCI & TECH
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