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US 2021/0276883 A1Published application
Hierarchical porous honeycombed nickel oxide microsphere and preparation method thereof
AssigneeNorthwestern Polytechnical University
InventorsWangchang GENG, Shilu XU, Yi YAN, Qiuyu ZHANG
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Abstract
A hierarchical porous honeycombed nickel oxide microsphere and a preparation method thereof are disclosed. The method includes mixing nickel sulfate hexahydrate, urea, water and glycerol, to obtain a mixed solution; subjecting the mixed solution to a hydrothermal reaction, to obtain a precursor; and calcining the precursor, to obtain the hierarchical porous honeycombed nickel oxide microspheres.
Claims11
A method for preparing a hierarchical porous honeycombed nickel oxide microsphere, comprising,
- mixing nickel sulfate hexahydrate, urea, water and glycerol, to obtain a mixed solution, wherein a mass ratio of nickel sulfate hexahydrate to urea is in the range of (0.14-0.28):(0.06-0.60), a volume ratio of glycerol to water is in the range of (0-18):(36-18), and a ratio of the total solid mass of nickel sulfate hexahydrate and urea to the total liquid volume of glycerol and water is in the range of 1 g:(40-110) mL;
- subjecting the mixed solution to a hydrothermal reaction, to obtain a precursor, where the hydrothermal reaction is performed at a temperature of 135-140° C. for 40-80 minutes;
- and
- calcining the precursor, to obtain the hierarchical porous honeycombed nickel oxide microspheres.
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Dependencies are inferred from the claim text.