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Preparation method of different morphologies of cobalt monoxide nanometers loaded with foam nickel

A technology of cobalt monoxide and nanomaterials, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of not meeting high-capacity power batteries, affecting ion and electron transmission, poor conductivity, etc. problems, to achieve a wide pore size distribution, shorten the transmission path, and improve the conductivity

Active Publication Date: 2018-08-10
SOUTH CHINA NORMAL UNIVERSITY
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  • Abstract
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  • Claims
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Problems solved by technology

However, the three-dimensional porous carbon framework / CoO composite material prepared by this method is used as the anode material of lithium-ion batteries, and the initial discharge capacity is only 700mAh / g, which cannot meet the needs of high-capacity power batteries. The main reason for the low capacity is the material itself. Poor conductivity, which affects the transport of ions and electrons

Method used

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  • Preparation method of different morphologies of cobalt monoxide nanometers loaded with foam nickel
  • Preparation method of different morphologies of cobalt monoxide nanometers loaded with foam nickel
  • Preparation method of different morphologies of cobalt monoxide nanometers loaded with foam nickel

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preparation example Construction

[0051] According to a non-limiting embodiment of the present invention, there is provided a method for preparing nickel foam supported cobalt monoxide nanomaterials with different shapes, the method comprising the following steps.

[0052] (1) The flaky nickel foam is placed in an ultrasonic cleaning machine for cleaning, and the cleaned foam nickel is placed in a drying oven for drying.

[0053] (2) Disperse the cobalt chloride hexahydrate powder into the dispersing solvent added with urea, and magnetically stir at room temperature for 0.5 to 1.5 hours to form a suspension at a stirring speed of 300 to 400 RPM, wherein the concentration of cobalt chloride hexahydrate and urea The quality is 2:3~8.

[0054] (3) Transfer the suspension in step (2) to the high-pressure hydrothermal reaction kettle, and put the dried sheet-shaped nickel foam into the high-pressure hydrothermal reaction kettle obliquely in the step (1), and seal the high-pressure For the hydrothermal reactor, set...

Embodiment 1

[0059] The preparation method of the CoO nanomaterials of two different shapes specifically comprises the following steps:

[0060] First, in step 1, the nickel foam with a specification of 280ppm and a thickness of 0.5mm is cut into a uniform size of 3 × 4 square centimeters, and cleaned with 3mol / L hydrochloric acid, acetone, absolute ethanol and deionized water in sequence. Wash in the machine for 30 minutes, 20 minutes, 15 minutes and 15 minutes, and then dry in a drying oven at a temperature of 60°C for 8 hours.

[0061] Next, in step 2, the CoCl 2 ·6H 2 The O powder is dispersed into deionized water with urea added, the mass ratio of urea to deionized water is 0.55:29, and magnetically stirred at a stirring speed of 350RPM for 1 hour at room temperature to form a suspension, wherein, CoCl 2 ·6H 2 The mass ratio of O to urea is 2:5.

[0062] Then, in step 3, the suspension is transferred to the high-pressure hydrothermal reactor, the dried nickel foam is tilted into t...

Embodiment 2

[0066] In addition to step 2, the CoCl 2 ·6H 2 O powder is dispersed in the dehydrated alcohol that has added urea, and the mass ratio of urea and dehydrated alcohol is 0.55:23, other steps are the same as embodiment 1.

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Abstract

The invention discloses a preparation method of different morphologies of cobalt monoxide nanometers loaded with foam nickel. The preparation method comprises: placing sheet-like foam nickel in an ultrasonic washing machine, washing, placing the washed foam nickel in a drying box, and drying; dispersing cobalt chloride hexahydrate powder into a dispersion solvent added with urea, and magneticallystirring at a room temperature to form a suspension; transferring the suspension to a high-pressure hydrothermal reaction kettle, obliquely placing the dried sheet-like foam nickel into the high-pressure hydrothermal reaction kettle, sealing the high-pressure hydrothermal reaction kettle, placing the high-pressure hydrothermal reaction kettle into the drying box, carrying out thermal insulation for 15-18 h at a temperature of 160-200 DEG C, and naturally cooling to a room temperature; taking the foam nickel out of the high-pressure hydrothermal reaction kettle, placing into the ultrasonic washing machine, washing, placing into a vacuum drying box, and drying to obtain a precursor; and calcining the precursor for 3-4 h at a calcination temperature of 400-520 DEG C.

Description

technical field [0001] The invention relates to a negative electrode material of a lithium ion battery, in particular to a preparation method of a foamed nickel-loaded cobalt monoxide nanometer material. Background technique [0002] With the continuous development of the automobile industry, the depletion of non-renewable resources such as petroleum is becoming more and more serious. At the same time, the environmental pollution caused by non-renewable resources has become one of the key issues of global concern. Therefore, research and development of a new generation of high-performance, environmentally friendly and green chemical power sources is an important part of sustainable development. Lithium-ion battery, as a new type of high-efficiency green energy storage device, has the advantages of high energy density, high working voltage, small self-discharge, long cycle life, good safety performance and no memory effect. It is an internationally recognized ideal Chemical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/1391H01M4/52H01M4/62H01M10/0525B82Y30/00
CPCH01M4/1391H01M4/52H01M4/626H01M4/628H01M10/0525B82Y30/00H01M2004/027H01M2004/021Y02E60/10
Inventor 赵灵智刘妙
Owner SOUTH CHINA NORMAL UNIVERSITY
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