Ni/CeO2NP@PANI core-shell structural composite material and preparation method thereof

A composite material and shell structure technology, which is applied in the field of Ni/CeO2NP@PANI core-shell structure composite material and its preparation, and achieves the effects of good environmental protection, low temperature and reduced energy consumption

Active Publication Date: 2018-03-02
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of traditional single materials while integrating the excellent properties of conductive polymer materials and inorganic nanomaterials, and to obtain advanced materials with high performance, multi-function and controllable morphology

Method used

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  • Ni/CeO2NP@PANI core-shell structural composite material and preparation method thereof
  • Ni/CeO2NP@PANI core-shell structural composite material and preparation method thereof
  • Ni/CeO2NP@PANI core-shell structural composite material and preparation method thereof

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preparation example Construction

[0040] In a preferred embodiment of the present invention, the above-mentioned Ni / CeO 2 Preparation method of NP@PANI core-shell structure composites, including: Ni / CeO 2 Preparation of NPs and Ni / CeO 2 Preparation of NP@PANI composites.

[0041] In a preferred embodiment of the present invention, the Ni / CeO 2 The preparation method of NPs comprises the following steps:

[0042] (1) Ce(NO 3 ) 3 ·6H 2 O was added to ethylene glycol and stirred until completely dissolved;

[0043] (2) Ni(NO 3 ) 2 ·6H 2 O joins in step (1) gained solution, continues to stir;

[0044] (3) Add acetic acid and deionized water to the solution obtained in step (2), and stir until uniform;

[0045] (4) Transfer the solution prepared in step (3) to an autoclave for hydrothermal reaction. After the hydrothermal treatment, the autoclave is cooled to room temperature to obtain a gray precipitate;

[0046] (5) The gray precipitate obtained in step (4) is centrifuged, washed, dried, ground and ca...

Embodiment 1

[0075] (1) 0.5g Ce(NO 3 ) 3 ·6H 2 O was added to 15 mL of ethylene glycol, and stirred at room temperature for 0.5 h;

[0076] (2) Add 460μL 0.5mol / L Ni(NO 3 ) 2 ·6H 2 O was added to the solution obtained in step (1), stirred at room temperature for 15min;

[0077] (3) Add 500 μL of acetic acid and 500 μL of deionized water into the solution obtained in step (2), and stir at room temperature for 0.5 h;

[0078] (4) the mixed solution that step (3) is obtained is transferred in the autoclave of the polytetrafluoroethylene liner of 20mL;

[0079] (5) Tighten the autoclave in step (4) and put it into an oven, and keep it warm at 180° C. for 3 hours; after the hydrothermal treatment, naturally cool the autoclave to room temperature;

[0080] (6) Centrifuge the precipitate obtained in step (5), wash with distilled water and ethanol three times respectively, dry in a blast drying oven at 80°C for 24 hours, and grind to obtain Ni / CeO 2 powder;

[0081] (7) Ni / CeO obtained in s...

Embodiment 2

[0090] Ni / CeO 2 NPs preparation method is with step (1)-(7) in example 1;

[0091] (8) Ni / CeO obtained in step (7) 2 Disperse 20mg of the powder in 25mL of deionized water, add 100mg of PVP to the ultrasonic condition, and continue ultrasonication for 0.5h;

[0092] (9) Disperse 20 μL of aniline in 25 mL of 2mol / L HCl solution and stir until uniformly dispersed;

[0093] (10) quickly add the solution obtained in (9) to the suspension obtained in (8), and stir at room temperature for 2 hours;

[0094] (11) Dissolve 52mg APS in 20mL deionized water;

[0095] (12) Add the solution prepared in step (11) to the suspension obtained in step (10), and stir at room temperature for 12 hours;

[0096] (13) Centrifuge the precipitate obtained in step (12), wash with distilled water and ethanol three times respectively, dry in a blast drying oven at 80°C for 24 hours, and grind to obtain Ni / CeO 2 NP@PANI powder.

[0097] Observation with transmission electron microscope and scanning ...

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Abstract

The invention discloses a Ni / CeO2NP@PANI core-shell structural composite material and a preparation method thereof. The method comprises the following steps: firstly, Ni / CeO2 NPs are prepared througha hydrothermal method; and then aniline is polymerized on the surfaces of the Ni / CeO2 NPs by adopting a chemical oxidation polymerization method, and in the polymerization process of the aniline, through changing a concentration of HCl, conversion from a Ni / CeO2NP@PANI core-shell structure to a spaced Ni / CeO2NP@PANI core-shell structure to PANI hollow spheres is realized. In the process, templatesare not needed, the method is green and environmentally friendly, the preparation method is simple, the preparation process is safe, the energy consumption is low, and the operability is strong; andthe Ni / CeO2 NPs prepared by the method have rough surfaces, so that the specific surface area can be increased to increase the contact area of the Ni / CeO2 NPs and the PANI, and the diffusion of ions and electrons can be promoted to effectively improve the electrochemical performance.

Description

technical field [0001] The invention belongs to the technical field of synthesis of inorganic / polymer composite materials, in particular to a Ni / CeO 2 NP@PANI core-shell structure composite material and its preparation method. Background technique [0002] Supercapacitor is a new type of green energy storage element, which has the advantages of long cycle life, high power density, and short charge and discharge time, and has become a promising energy storage device. Due to the high theoretical capacitance of conductive polymers and metal oxides, they are considered to be the main pillar materials for the charge storage and release of supercapacitors. Among conductive polymers, polyaniline (PANI) has become one of the fastest-growing conductive polymer materials because of its simple synthesis conditions, low cost, non-toxicity, and stable performance. However, the pure PANI sample has poor cycle stability, high rigidity, poor mechanical ductility, and its redox reaction ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08K3/08C08K3/22
CPCC08G73/0266C08K3/08C08K3/22C08K2003/0862C08K2003/2213
Inventor 周国伟宫庆华高婷婷郑玉洁李治凯
Owner QILU UNIV OF TECH
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