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
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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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