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Preparation method of polyaniline/carbon composite material for cathode material of aqueous zinc ion battery

A zinc-ion battery, carbon composite material technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of cumbersome preparation process, achieve easy availability of raw materials, be conducive to large-scale production and application, experimental conditions and operations simple steps

Active Publication Date: 2020-02-28
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent mainly guarantees the high capacity and high cycle stability of the battery through the zinc / polyaniline secondary battery of the organic system electrolyte, and the whole preparation process is relatively cumbersome

Method used

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  • Preparation method of polyaniline/carbon composite material for cathode material of aqueous zinc ion battery
  • Preparation method of polyaniline/carbon composite material for cathode material of aqueous zinc ion battery
  • Preparation method of polyaniline/carbon composite material for cathode material of aqueous zinc ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The production process of polyaniline / carbon composites is as follows:

[0047] (1) Take 250mL of hydrochloric acid with a concentration of 1mol / L, and cool down below 6°C in an ice-water bath;

[0048](2) While stirring, add 32g of aniline, divided into four times, with an interval of 3-5 minutes each time, and can be added when the temperature is below 6°C;

[0049] (3) Add 0.567g of activated carbon, stir and disperse for 30 minutes, cool down to below 4°C in an ice-water bath, then add manganese dioxide (preferably 2.64g), and react for 15 minutes;

[0050] (4) Take another 150 mL of hydrochloric acid with a concentration of 1 mol / L, add 84 g of ammonium persulfate, and stir to dissolve;

[0051] (5) Under the condition of stirring, drop the ammonium persulfate in the form of dropwise addition, and control the dripping in about 2 hours;

[0052] (6) After the ammonium persulfate is added dropwise, add 0.567g of acetylene black, continue to stir, react for 3h, and ...

Embodiment 2

[0082] Embodiment 2 (being comparative example 1)

[0083] The production process of polyaniline / carbon composites is as follows:

[0084] (1) Take 250mL of hydrochloric acid with a concentration of 1mol / L, and cool down below 6°C in an ice-water bath;

[0085] (2) While stirring, add 32g of aniline, divided into four times, with an interval of 3-5 minutes each time, and can be added when the temperature is below 6°C;

[0086] (3) Add 1.7g of activated carbon, stir and disperse for 30 minutes, cool down to below 4°C in an ice-water bath, then add manganese dioxide (2.64g), and react for 15 minutes;

[0087] (4) Take another 150 mL of hydrochloric acid with a concentration of 1 mol / L, add 84 g of ammonium persulfate, and stir to dissolve;

[0088] (5) Under the condition of stirring, drop the ammonium persulfate in the form of dropwise addition, and control the dripping in about 2 hours;

[0089] (6) After the ammonium persulfate is added dropwise, continue to stir, and then...

Embodiment 3

[0094] Embodiment 3 (being comparative example 2)

[0095] The production process of polyaniline / carbon composites is as follows:

[0096] (1) Take 250mL of hydrochloric acid with a concentration of 1mol / L, and cool down below 6°C in an ice-water bath;

[0097] (2) While stirring, add 32g of aniline, divided into four times, with an interval of 3-5 minutes each time, and can be added when the temperature is below 6°C;

[0098] (3) Stir for 10 minutes, wait for the temperature to drop below 4°C, then add manganese dioxide (2.64g) and react for 15 minutes;

[0099] (4) Take another 150 mL of hydrochloric acid with a concentration of 1 mol / L, add 84 g of ammonium persulfate, and stir to dissolve;

[0100] (5) Under the condition of stirring, drop the ammonium persulfate in the form of dropwise addition, and control the dripping in about 2 hours;

[0101] (6) After the ammonium persulfate is added dropwise, continue to stir, react for 4 hours, and the temperature of the whole r...

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Abstract

The invention relates to a preparation method of a polyaniline / carbon composite material used for a cathode material of an aqueous zinc ion battery, comprising the following steps: (1) adding anilineinto hydrochloric acid while stirring; 2) adding activated carbon, stirring and dispersing, cooling in an ice water bath, and then adding manganese dioxide, and reacting; 3) dissolving ammonium persulfate in hydrochloric acid to obtain an ammonium persulfate solution, and then dropwise adding the ammonium persulfate solution into the reaction solution obtain in the Step (2) under the condition ofstirring; (4) adding a first batch of acetylene black after the ammonium persulfate solution is added dropwise, stirring for a reaction, adding a second batch of acetylene black, continuing a reaction, carrying out extraction filtration, cleaning and drying to obtain a target product. Compared with the prior art, the invention has the following beneficial effects: by the preparation method, the utilization rate of polyaniline in the composite material can be significantly improved, and the capacity and cycle stability of the aqueous zinc ion battery are improved; and meanwhile, the raw materials required for the whole preparation process are easily available, and the experimental conditions and operation steps are simple.

Description

technical field [0001] The invention belongs to the technical field of preparation of water-based zinc ion positive electrode materials, and relates to a preparation method of a polyaniline / carbon composite material used as a water-based zinc ion battery positive electrode material. Background technique [0002] The extensive use of fossil energy has led to global environmental degradation and the greenhouse effect. Countries around the world are also constantly exploring sustainable development models. As a star energy storage device, lithium-ion batteries are expected to be used in more practical applications in the future, but the high production cost of lithium-ion batteries, potential safety issues, and environmental pollution of the electrolyte limit the further development of lithium-ion batteries. develop. Therefore, aqueous Zn-ion batteries have entered people's field of vision due to their low production cost, high cycle stability, and environmental friendliness. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/60H01M4/62H01M10/36
CPCH01M4/366H01M4/608H01M4/625H01M10/36Y02E60/10
Inventor 陈作锋徐铭泽刘洋洋汪建营
Owner TONGJI UNIV
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