Carbon-coated nickel oxide/metallic nickel and simple synthesis method thereof

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...

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Problems solved by technology

[0005] Currently, methods for synthesizing NiO and/or Ni materials usually require

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