Preparation method of sea urchin-like Ni/Co composite basic carbonate

Abstract

The invention discloses a preparation method of sea urchin-like Ni / Co composite basic carbonate and belongs to the technical field of inorganic material preparation. The preparation method includes the steps of adding a precipitating agent to a mixed solution containing a nickel salt and a cobalt salt, obtaining a compound precipitation with control of the reaction temperature, and filtering, water-washing and drying the precipitation to obtain the sea urchin-like Ni / Co composite basic carbonate microspheres. The invention has following advantages: (1) a quick preparation method of the sea urchin-like Ni / Co composite basic carbonate microspheres is provided; (2) by means of the method, the morphology of the prepared sea urchin-like Ni / Co composite basic carbonate microspheres can be adjusted through adjustment of temperature; and (3) the method is simple in reaction process, is mild in condition, is short in processes and is suitable for industrial production.

Description

technical field

[0001] The invention belongs to the technical field of inorganic material preparation, in particular to a preparation method of a sea urchin-shaped nickel-cobalt composite basic carbonate. Background technique

[0002] The development of nanoscience has opened up a new field for the research of new materials. The regulation and synthesis of micro-nano materials with special structures is of great significance in basic scientific research and practical applications, especially those obtained by self-assembly of low-dimensional nano-units. Complex nanostructures with special morphology and structure can obtain better physical or chemical properties.

[0003] The basic carbonates of nickel and cobalt have important applications in the fields of electrode materials, catalysts, electronic materials, and additives for magnetic materials. CN101708868A introduces a preparation process of basic nickel carbonate and basic cobalt carbonate, and products with uniform pa...

Examples

Embodiment example 1

[0017] Prepare 25mL of nickel nitrate and cobalt nitrate mixed solution with a concentration of 0.39mol / L at room temperature, wherein the molar ratio of nickel ion and cobalt ion is 1:2, add 0.005mol urea under stirring conditions, continue stirring for 30min, and then move into the reaction The kettle was kept at 180 °C for 6 hours, after natural cooling, centrifuged, washed, and then dried at 60 °C for 12 hours to obtain sea urchin-like structure nickel-cobalt hydroxycarbonate microspheres. The scanning photos of the product are as follows figure 1 shown.

Embodiment example 2

[0019] Prepare 25mL of nickel nitrate and cobalt nitrate mixed solution with a concentration of 0.39mol / L at room temperature, wherein the molar ratio of nickel ion and cobalt ion is 2:1, add 0.005mol of urea under stirring conditions, continue stirring for 30min, and then move into the reaction The kettle was kept at 120°C for 5h, after natural cooling, centrifuged, washed, and then dried at 60°C for 12h to obtain sea urchin-like structure nickel-cobalt hydroxycarbonate microspheres. The TEM pictures and X-ray diffraction patterns of the products are as follows figure 2 and image 3 shown.

Embodiment example 3

[0021] Prepare 25mL of a mixed solution of nickel nitrate and cobalt nitrate with a concentration of 0.4mol / L at room temperature, wherein the solvent is water and ethylene glycol (1:1), and the molar ratio of nickel ion to cobalt ion is 2:1. Under stirring conditions Add 0.005mol of urea, continue stirring for 30min, then transfer to the reaction kettle, keep at 120℃ for 5h, after natural cooling, centrifuge, wash, and then dry at 60℃ for 12h to obtain nickel-cobalt hydroxycarbonate microspheres. Scanned photos of products such as Figure 4 shown.

technical field

[0001] The invention belongs to the technical field of inorganic material preparation, in particular to a preparation method of a sea urchin-shaped nickel-cobalt composite basic carbonate. Background technique

[0002] The development of nanoscience has opened up a new field for the research of new materials. The regulation and synthesis of micro-nano materials with special structures is of great significance in basic scientific research and practical applications, especially those obtained by self-assembly of low-dimensional nano-units. Complex nanostructures with special morphology and structure can obtain better physical or chemical properties.

[0003] The basic carbonates of nickel and cobalt have important applications in the fields of electrode materials, catalysts, electronic materials, and additives for magnetic materials. CN101708868A introduces a preparation process of basic nickel carbonate and basic cobalt carbonate, and products with uniform pa...

Examples

Embodiment example 1

[0017] Prepare 25mL of nickel nitrate and cobalt nitrate mixed solution with a concentration of 0.39mol / L at room temperature, wherein the molar ratio of nickel ion and cobalt ion is 1:2, add 0.005mol urea under stirring conditions, continue stirring for 30min, and then move into the reaction The kettle was kept at 180 °C for 6 hours, after natural cooling, centrifuged, washed, and then dried at 60 °C for 12 hours to obtain sea urchin-like structure nickel-cobalt hydroxycarbonate microspheres. The scanning photos of the product are as follows figure 1 shown.

Embodiment example 2

[0019] Prepare 25mL of nickel nitrate and cobalt nitrate mixed solution with a concentration of 0.39mol / L at room temperature, wherein the molar ratio of nickel ion and cobalt ion is 2:1, add 0.005mol of urea under stirring conditions, continue stirring for 30min, and then move into the reaction The kettle was kept at 120°C for 5h, after natural cooling, centrifuged, washed, and then dried at 60°C for 12h to obtain sea urchin-like structure nickel-cobalt hydroxycarbonate microspheres. The TEM pictures and X-ray diffraction patterns of the products are as follows figure 2 and image 3 shown.

Embodiment example 3

[0021] Prepare 25mL of a mixed solution of nickel nitrate and cobalt nitrate with a concentration of 0.4mol / L at room temperature, wherein the solvent is water and ethylene glycol (1:1), and the molar ratio of nickel ion to cobalt ion is 2:1. Under stirring conditions Add 0.005mol of urea, continue stirring for 30min, then transfer to the reaction kettle, keep at 120℃ for 5h, after natural cooling, centrifuge, wash, and then dry at 60℃ for 12h to obtain nickel-cobalt hydroxycarbonate microspheres. Scanned photos of products such as Figure 4 shown.

Images