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A kind of carbon-coated nickel oxide/metallic nickel and its simple synthesis method

A synthesis method and nickel oxide technology, applied in nickel oxide/nickel hydroxide and other directions, can solve the problems of expensive instruments, long reaction time, etc., and achieve the effects of improving crystal quality, improving conductivity, and improving performance

Active Publication Date: 2016-11-02
FAREAST KINGSTAR CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Currently, methods for synthesizing NiO and / or Ni materials usually require expensive instruments, strict experimental conditions, and / or long reaction times

Method used

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  • A kind of carbon-coated nickel oxide/metallic nickel and its simple synthesis method
  • A kind of carbon-coated nickel oxide/metallic nickel and its simple synthesis method
  • A kind of carbon-coated nickel oxide/metallic nickel and its simple synthesis method

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Weigh 4 g of ferric nitrate, 1 g of citric acid, and 0.03 g of ammonium nitrate, respectively, to prepare an aqueous solution, stir and dissolve until a transparent solution is obtained. The solution was heated to 60 °C, and the water was continuously evaporated to a viscous gel state. The gel was heated in an environment of 130 °C, and the gel self-propagatingly burned within a few minutes to obtain a black loose powder. The resulting powder was washed in deionized water and dried.

Embodiment 2

[0027] Weigh 4 g of ferric nitrate, 2 g of citric acid and 0.1 g of ammonium nitrate, respectively, to prepare an aqueous solution, stir and dissolve until a transparent solution is obtained. The solution was heated to 100 °C, and the water was continuously evaporated to a viscous gel state. The gel was heated in an environment of 200 °C, and the gel self-propagatingly burned within a few minutes to obtain a black loose powder. The resulting powder was added to ethanol for washing and dried.

Embodiment 3

[0029] Weigh 1.6 g of ferric chloride, 0.2 g of glycine, and 0.5 g of ammonium nitrate, respectively, to prepare an aqueous solution, stir and dissolve to a transparent solution. The solution was heated to 50 °C, and the water was continuously evaporated to a viscous gel state. The gel was heated in an environment of 290 °C, and the gel self-propagatingly burned within a few minutes to obtain a black loose powder. The resulting powder was washed in deionized water and dried.

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Abstract

The invention belongs to the field of new materials and new energy resources, and particularly relates to carbon-coated nickel oxide / metallic nickel (NiO / Ni) and a simple synthesis method of the carbon-coated NiO / Ni. The simple synthesis method comprises the following steps that soluble nickel salt, organic fuel and combustion additives are weighed and mixed to form an aqueous solution through preparation, and the aqueous solution is stirred and dissolves, so that a transparent solution is formed; the solution is heated to be at the temperature ranging from 50 DEG C to 100 DEG C, and moisture is continuously evaporated, so that the solution is in a sticky gel state; the gel is heated to be at the temperature ranging from 140 DEG C to 290 DEG C, self-propagating combustion of the gel happens, black loose powder can be obtained, and the obtained powder is added to solvent to be cleaned and dried, so that a high-purity target material is obtained. According to the invention, the technology is simple, operation is easy, and the raw materials are low in cost and easy to obtain. The prepared NiO / Ni is high in crystal quality, the conductive capacity of the carbon-coated NiO / Ni is enhanced through black carbon, and the carbon-coated NiO / Ni can be applied to devices such as lithium ion batteries and supercapacitors. The technological cost is low, conventional multi-step complex technologies, the long technology period and high-priced devices are avoided, and the carbon-coated NiO / Ni is applicable to large-scale industrial production.

Description

technical field [0001] The invention belongs to the field of new materials and new energy sources, and particularly relates to a carbon-coated nickel oxide / metallic nickel (NiO / Ni) and its simple synthesis method. Important application prospects. Background technique [0002] Nickel oxide (NiO) is an important inorganic functional material, widely used as a powder raw material for battery electrodes, catalysts, magnetic materials, semiconductors (such as varistors, thermistors), nickel-zinc ferrite, glass and ceramic colorants. Studies in recent years have shown that nano-sized nickel oxide is one of the hotspots in material science research, because nano-nickel oxide has better electrical properties, heat sensitivity and other physical properties, and is widely used in photocatalysis, lithium-ion batteries, solar cells, etc. important applications in the field. [0003] The transition metal nickel (Ni) has magnetism and good plasticity, as well as good corrosion resistanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02B22F9/24C01B31/02C01G53/04
Inventor 夏国栋张川江王素梅周鹏航
Owner FAREAST KINGSTAR CHEM
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