Flaky metal oxide and its controllable synthesis method and application

A flake metal and synthesis method technology, applied in the direction of manganese oxide/manganese hydroxide, cobalt oxide/cobalt hydroxide, nickel oxide/nickel hydroxide, etc.

Active Publication Date: 2020-10-27
SINOCAT ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the reaction process of a series of flaky metal oxides has not been described in the experimental process.

Method used

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  • Flaky metal oxide and its controllable synthesis method and application
  • Flaky metal oxide and its controllable synthesis method and application
  • Flaky metal oxide and its controllable synthesis method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A controllable synthesis method of sheet metal oxides, comprising the steps of:

[0034] (1) Add 0.5g of template agent into 60ml of deionized water, and keep stirring for 5 minutes until the drug is completely dissolved; the template agent is 2-methylimidazole;

[0035] (2) Add the metal salt to the above solution and continue to stir for 10 minutes. The molar ratio of the metal salt to the template is 1:3. The metal salt is an inorganic metal salt containing one of cobalt, nickel, manganese, zinc, and iron, such as nitric acid salt, chloride salt;

[0036] (3) Transfer the solution prepared above into an oil bath, and react at a temperature of 60° C., and the time range is 8 hours;

[0037] (4) Cool the above product to room temperature, wash it with deionized water and absolute ethanol, dry it at 60°C for 4 hours, put it into a tube furnace, calcinate it to 250°C, keep it for 4 hours, and finally get the shape of Flaky metal oxides. The calcination atmosphere is N...

Embodiment 2

[0040] A controllable synthesis method of sheet metal oxides, comprising the steps of:

[0041] (1) Add 3g of template agent into 120ml of deionized water, and continue to stir for 10 minutes until the drug is completely dissolved; the template agent is 1,2,3,4-butanetetracarboxylic acid;

[0042] (2) Add the metal salt to the above solution and continue to stir for 15 minutes, the molar ratio of the metal salt to the template is 3:1, and the metal salt is manganese acetylacetonate;

[0043] (3) transfer the solution prepared above into an oil bath, and react at a temperature of 100° C., and the time range is 16 hours;

[0044] (4) Cool the above product to room temperature, wash it with deionized water and absolute ethanol, dry it at 90°C for 6 hours, put it into a tube furnace, calcinate it to 700°C, keep it for 8 hours, and finally get the shape of Flaky metal oxides. The calcination atmosphere is N 2 , Ar, or air atmosphere, so that the sintered material only contains m...

Embodiment 3

[0047] A controllable synthesis method of sheet metal oxides, comprising the steps of:

[0048] (1) Add 1g of template agent into 80ml of deionized water, and keep stirring for 7 minutes until the drug is completely dissolved; the template agent is 1,2,3,4-butanetetracarboxylic acid;

[0049] (2) Add the above solution according to the metal salt and continue to stir for 12 minutes. The molar ratio of the metal salt to the template is 2:1. The metal salt is an inorganic metal salt containing one of cobalt, nickel, manganese, and zinc, such as CoCl 2 , NiCl 2 , MnCl 2 , Co(NO 3 ) 2 , Ni(NO 3 ) 2 , Mn(NO 3 ) 2 ;

[0050] (3) transfer the solution prepared above into an oil bath, and react at a temperature of 80° C., and the time range is 10 h;

[0051] (4) Cool the above product to room temperature, wash it with deionized water and absolute ethanol, dry it at 70°C for 5h, put it into a tube furnace, calcinate it to 350°C, keep it for 5h, and finally get the shape of Flak...

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Abstract

The invention provides a flake metal oxide and its controllable synthesis method and application, comprising the steps of: adding a template agent into deionized water, and continuously stirring until the medicine is completely dissolved; the template agent is 2-methylimidazole or terephthalic acid Or 1,2,3,4-butane tetracarboxylic acid; metal salt is added to the above solution and continuously stirred, and the metal salt is an inorganic metal salt or acetylacetonate containing one of cobalt, nickel, manganese, zinc, and iron; The above-mentioned prepared solution is transferred to an oil bath for reaction, the above-mentioned product is cooled to room temperature, washed, dried, then put into a tube furnace for calcination, and finally a sheet-like metal oxide is obtained; the present invention has prepared The lithium battery anode material with a sheet shape adopts the static precipitation method, which is simple, reliable, and controllable. This structure can expand the interaction between the electrode and the electrolyte, enhance the surface and interface energy, offset the capacity loss, and provide a negative electrode material with high lithium battery performance.

Description

technical field [0001] The invention belongs to the technical field of lithium battery and supercapacitor material preparation, in particular to controlling different raw materials to prepare flake metal oxides. Background technique [0002] Due to the characteristics of high voltage, large capacity, long cycle life and good safety performance, lithium-ion batteries have potential application prospects in portable electronic devices and even electric vehicles. One of the keys to the development of lithium-ion batteries is to find a suitable negative electrode material, so that the battery has a sufficiently high lithium intercalation capacity and good lithium deintercalation reversibility, so as to ensure the high voltage, large capacity and long cycle life of the battery. Due to their unique crystal structure and good electrical conductivity, metal oxides have great application prospects in lithium-ion batteries and supercapacitors. The preparation method is mainly a physi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G53/04C01G51/04C01G49/02C01G45/02
CPCC01G45/02C01G49/02C01G51/04C01G53/04C01P2004/61C01P2004/62C01P2006/40
Inventor 吴孟强郭玉苹杨俭陈诚冯婷婷徐自强
Owner SINOCAT ENVIRONMENTAL TECH
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