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Nickel-cobalt composite hydroxide ultralong nanobelt, nickel-cobalt composite oxide ultralong nanobelt and preparation method thereof

A technology of composite hydroxides and composite oxides, applied in nickel compounds, chemical instruments and methods, nanotechnology, etc., can solve the problems of cumbersome preparation of ultra-long nanoribbons, high energy consumption in the preparation process, and uneven products. Achieve good radial charge transport capability, controllable nanometer bandwidth, and solve the effect of cumbersome preparation process

Active Publication Date: 2020-07-03
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes ultra-long nanobelts of nickel-cobalt composite hydroxides, ultra-long nanobelts of nickel-cobalt composite oxides and their preparation methods. It realizes the control of the length and width of the nanomaterial, and at the same time solves the problems of cumbersome preparation process, poor repeatability, uneven product, low yield, and high energy consumption in the preparation process in the prior art.

Method used

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  • Nickel-cobalt composite hydroxide ultralong nanobelt, nickel-cobalt composite oxide ultralong nanobelt and preparation method thereof
  • Nickel-cobalt composite hydroxide ultralong nanobelt, nickel-cobalt composite oxide ultralong nanobelt and preparation method thereof
  • Nickel-cobalt composite hydroxide ultralong nanobelt, nickel-cobalt composite oxide ultralong nanobelt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Prepare 60 mL of an aqueous solution with a molar ratio of nickel sulfate and cobalt nitrate of 10:6, in which the concentration of nickel ions is 0.05 mol / L;

[0038] (2) Prepare sodium hydroxide with distilled water into 0.1 mol / L aqueous solution;

[0039] (3) Under stirring, take 3 mL of the sodium hydroxide aqueous solution prepared in step (2), add dropwise the nickel cobalt salt solution prepared in (1), and stir for 30 minutes to obtain mixed solution I;

[0040] (4) Pour the above mixed liquid I into a closed reactor, heat it to 80 degrees Celsius, and then react at this temperature for 120 hours at a constant temperature;

[0041] (5) After the reaction is over, the reaction solution is cooled, the reaction product is filtered, centrifuged or dialysis washed with deionized water to remove the soluble salt ions in the product, and the solid product obtained is the nickel-cobalt composite hydroxide super long Nanobelt

[0042] (6) Disperse the obtained solid product ...

Embodiment 2

[0048] (1) Prepare 60 mL of an aqueous solution with a molar ratio of nickel sulfate and cobalt sulfate of 10:4, in which the concentration of nickel ions is 0.25 mol / L;

[0049] (2) Under stirring, add 0.3 g of sodium hydroxide to the nickel cobalt salt solution prepared in (1), and stir for 10 minutes to obtain a mixed solution I;

[0050] (3) Pour the above mixed liquid I into a closed reactor, heat it to 100 degrees Celsius, and then react at this temperature for 48 hours at a constant temperature;

[0051] (4) Treat the reaction solution obtained in step (3) with the same treatment method as in steps (5), (6) and (7) in Example 1, to obtain the nickel-cobalt composite hydroxide nanobelt and nickel-cobalt composite Oxide nanobelt.

[0052] Product performance:

[0053] (1) The ratio of nickel and cobalt in the nickel-cobalt composite hydroxide nanobelt product prepared in this embodiment is 10:3.5, the length is 40-50 µm, the width is 200-300 nm, and the thickness is between 20-30 ...

Embodiment 3

[0062] (1) Prepare 60 mL of an aqueous solution with a molar ratio of nickel sulfate and cobalt chloride of 10:3, in which the concentration of nickel ions is 0.25 mol / L;

[0063] (2) While stirring, add 12 mL of 1 mol / L lithium hydroxide aqueous solution to the nickel cobalt salt solution configured in (1), and stir for 20 minutes to obtain mixed solution I;

[0064] (3) Pour the above mixed liquid I into a closed reactor, heat it to 120 degrees Celsius, and then react at this temperature for 24 hours at a constant temperature;

[0065] (4) Treat the reaction solution obtained in step (3) with the same treatment method as in steps (5), (6) and (7) in Example 1, to obtain the nickel-cobalt composite hydroxide nanobelt and nickel-cobalt composite Oxide nanobelt.

[0066] Product performance:

[0067] (1) The nickel-cobalt composite hydroxide nanobelt product prepared in this embodiment has a ratio of nickel and cobalt elements of 10:2.8, a length of 30-60 µm, a width of 200-300 nm, and ...

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Abstract

The invention belongs to the field of chemical synthesis, and relates to a nickel-cobalt composite hydroxide super-long nanobelt, a nickel-cobalt composite oxide super-long nanobelt and preparation methods of the nickel-cobalt composite hydroxide super-long nanobelt and the nickel-cobalt composite oxide super-long nanobelt. The nickel-cobalt composite hydroxide super-long nanobelt is a sulfate radical intercalated alpha-phase hydroxide, wherein the ratio of a nickel element to a cobalt element is 10:(0-5), and the length, width and thickness of the nanobelt can be adjusted and controlled, thewidth is 20-300nm, the length is 500nm-100[mu]m, and the thickness is 5-40nm. The preparation method provided by the invention adopts one-step hydrothermal reaction to realize mass production of the nickel-cobalt composite oxide nanobelt, and the nickel-cobalt composite oxide nanobelt can be obtained by a corresponding hydroxide through annealing, microwave sintering or high-energy electron beam irradiation. The products prepared by the methods are unique in structure, uniform in shape and excellent in performance, can be rapidly applied to industrialization, and has great application potentiality in aspects such as energy storage, catalysis, photoelectric conversion, gas detection and biological detection.

Description

Technical field [0001] The invention belongs to the field of chemical synthesis, and relates to a nickel-cobalt composite hydroxide ultra-long nanobelt, a nickel-cobalt composite oxide ultra-long nanobelt and a preparation method thereof. Background technique [0002] Because of their extremely rich physical and chemical properties, transition metal hydroxides / oxides are widely used in many fields such as catalysis, detection, photoelectric conversion, energy storage, and high-temperature superconductivity. In order to continuously meet our unique needs for various materials, with the advancement of science and technology, multi-composite and nanomaterials are considered to be the two most effective ways to further improve the performance of transition metal oxides / hydroxides. [0003] Among the many nanostructures, one-dimensional nanomaterials of multiple transition metal hydroxides / oxides, such as nanowires, nanobelts, nanorods, nanotubes, etc., have a high active specific surfa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G53/00B82Y30/00B82Y40/00H01G11/46
CPCB82Y30/00B82Y40/00C01G53/006C01P2002/72C01P2004/03C01P2004/17C01P2004/61C01P2004/62C01P2004/64H01G11/46Y02E60/13
Inventor 张电波米立伟崔世忠陈卫华熊清霖
Owner ZHONGYUAN ENGINEERING COLLEGE
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