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.