A kind of hexagonal sheet mesoporous nickel oxide and its preparation method and application

A technology of hexagonal flakes and nickel oxide, applied in the direction of nickel oxide/nickel hydroxide, etc., can solve the problems of high energy consumption and cumbersome experimental process, and achieve the effects of improving lithium battery performance, promoting diffusion, and simple operation

Active Publication Date: 2017-03-22
海门市创豪工业设计有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The Chinese patent document with the application publication number CN 103950998 A (application number 201410162143.2) discloses a method for synthesizing nano-flaky nickel oxide with supercritical ethanol. The method uses ammonium acetate and benzyl alcohol as raw materials, and a circulating Condensing device, nitrogen gas needs to be introduced during the calcination process, the experimental process is cumbersome and consumes a lot of energy

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  • A kind of hexagonal sheet mesoporous nickel oxide and its preparation method and application
  • A kind of hexagonal sheet mesoporous nickel oxide and its preparation method and application
  • A kind of hexagonal sheet mesoporous nickel oxide and its preparation method and application

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Effect test

Embodiment 1

[0035] Put a 100mL beaker on a magnetic stirrer, add 35mL of distilled water and raise the temperature to 30°C, add 0.15g of CTAB to the distilled water under stirring, after the solution is stirred overnight and becomes transparent, add 0.17g of DDAB, and continue stirring until completely dissolved . Then add 0.70mL of ammonia water with a volume ratio of 25%. After stirring and reacting for 2.5h, slowly add 3.0g Ni(NO 3 ) 2 ·6H 2 O, after sealing, continue to stir and react at 30° C. for 24 h to obtain a light green solution. The obtained light green solution was transferred to a 100mL reactor, and placed in a 100°C thermostat for hydrothermal reaction for 12h. After cooling, the light green solution was centrifuged and washed. The washed precipitate was dried at 40° C. for 18 hours, and the dried precipitate was ground and then calcined at 500° C. for 2 hours to obtain nickel oxide powder.

Embodiment 2

[0037] Put a 100mL beaker on a magnetic stirrer, add 35mL of distilled water and raise the temperature to 30°C, add 0.15g of CTAB to the distilled water under stirring, after the solution is stirred overnight and becomes transparent, add 0.17g of DDAB, and continue stirring until completely dissolved . Then add 0.70mL of ammonia water with a volume ratio of 25%. After stirring and reacting for 2.5h, slowly add 3.0g Ni(NO 3 ) 2 ·6H 2 O, after sealing, continue to stir and react at 30° C. for 24 h to obtain a light green solution. The obtained light green solution was transferred to a 100mL reactor, and placed in a 100°C thermostat for hydrothermal reaction for 24h. After cooling, the light green solution was centrifuged and washed. The washed precipitate was dried at 40° C. for 18 hours, and the dried precipitate was ground and then calcined at 500° C. for 2 hours to obtain nickel oxide powder.

[0038] Observation with transmission electron microscope and scanning electro...

Embodiment 3

[0040] Put a 100mL beaker on a magnetic stirrer, add 32mL of distilled water and raise the temperature to 30°C, add 0.13g of CTAB to the distilled water under stirring, after the solution is stirred overnight and becomes transparent, add 0.14g of DDAB, continue to stir until completely dissolved . Then add 0.70mL of ammonia water with a volume ratio of 25%. After stirring and reacting for 2h, slowly add 3.0g Ni(NO 3 ) 2 ·6H 2 O, after sealing, continue to stir and react at 30° C. for 18 h to obtain a light green solution. The obtained light green solution was transferred to a 100 mL reactor, and placed in a thermostat at 110° C. for hydrothermal reaction for 48 h. After cooling, the light green solution was centrifuged and washed. The washed precipitate was dried at 40° C. for 12 hours, and the dried precipitate was ground and then calcined at 500° C. for 3 hours to obtain nickel oxide powder.

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Abstract

The invention discloses a hexagonal flake-shaped mesoporous nickel oxide and a preparation method and application thereof. The preparation method includes the following steps: (1) ammonia, the solution volume of which is 25 percent, is added into the aqueous solution of CTAB (cetyltrimethyl ammonium bromide) and DDAB (didodecyldimethylammonium bromide), so that mixed solution a is obtained; (2) Ni(NO3)2.6H2O is added into the mixed solution a of step (1), so that mixed solution b is obtained; (3) after being transferred into a reaction kettle, the mixed solution b prepared in step (2) carries out hydrothermal reaction; (4) after being filtered by suction, washed, dried and ground, the product of the reaction in step (3) is calcined, so that the nickel oxide powder is obtained. The hexagonal flake-shaped mesoporous nickel oxide prepared by the invention has obvious mesopore canals. Compared with the pure flask-shaped structure, the uniform canals not only can increase specific surface area, so that the contact area between electrolyte and the nickel oxide nanosheets is enlarged, but also can increase lithium storage sites to promote the diffusion of lithium ions and electrons, so that the performance of lithium batteries can be increased effectively.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial synthesis, and in particular relates to a hexagonal plate-shaped mesoporous nickel oxide and its preparation method and application. Background technique [0002] As an important transition metal oxide, nickel oxide is widely used in electronic materials, magnetic materials, catalytic materials, sensing materials, photoelectric materials, energy storage and other fields due to its unique physical and chemical properties. Compared with traditional materials, nanomaterials have the characteristics of quantum size effect, surface and interface effect, macroscopic quantum tunneling effect, etc., and show more excellent performance in many fields. Therefore, the preparation, characterization and related performance research of nano-nickel oxide have been widely concerned by people. [0003] In recent years, nano-nickel oxide with different morphologies has been reported successively, such as nano...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G53/04
CPCC01G53/04C01P2002/72C01P2004/03C01P2004/04C01P2006/17
Inventor 周国伟史雪孙彬高婷婷
Owner 海门市创豪工业设计有限公司
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