Preparation method of manganese-cobalt oxide powder

A technology of manganese oxide cobalt oxide powder and cobalt chloride is applied in chemical instruments and methods, inorganic chemistry, cobalt compounds, etc., to achieve the effect of avoiding agglomeration and precipitation, and the process is simple

Active Publication Date: 2016-06-15
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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At present, there are few methods for

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  • Preparation method of manganese-cobalt oxide powder
  • Preparation method of manganese-cobalt oxide powder
  • Preparation method of manganese-cobalt oxide powder

Examples

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Example Embodiment

[0021] Example 1

[0022] The preparation method of the manganese cobalt oxide powder in this embodiment specifically includes the following steps:

[0023] (1) Weigh 0.2 mol of polyvinyl alcohol, 0.1 mol of ethylene glycol, and 0.1 mol of adipic acid into a beaker;

[0024] (2) Add 100ml of deionized water to the beaker; place it on a magnetic stirrer, set the heating temperature of the magnetic stirrer to 40°C, and stir for 30 minutes to make the sting mixture fully dissolved.

[0025] (3) Weigh 5g of cobalt chloride and 2.5g of manganese chloride crystals, put them into the prepared sting mixture solution, and stir with a magnetic stirrer at room temperature for 30 minutes to fully dissolve the cobalt chloride and manganese chloride crystals.

[0026] (4) Place the prepared solution in a constant temperature box and heat it to 70°C for 10 hours to obtain (MnCo) 3 O 4 Powder precursor solution.

[0027] (5) Pour the precursor solution into the crucible, heat at 110°C for 1 hour, then h...

Example Embodiment

[0028] Example 2

[0029] The preparation method of the manganese cobalt oxide powder in this embodiment specifically includes the following steps:

[0030] (1) Weigh 0.8 mol of polyvinyl alcohol, 0.4 mol of ethylene glycol, and 0.4 mol of adipic acid into a beaker;

[0031] (2) Add 100ml of deionized water to the beaker; place it on a magnetic stirrer, set the heating temperature of the magnetic stirrer to 60℃, and stir for 60min to make the sting mixture fully dissolved.

[0032] (3) Weigh 2.5 g of cobalt chloride and 5 g of manganese chloride crystals, put them in the prepared sting mixture solution, and stir with a magnetic stirrer at room temperature for 60 minutes to fully dissolve the cobalt chloride and manganese chloride crystals.

[0033] (4) Place the prepared solution in a constant temperature box and heat it to 80°C for 12 hours to obtain (MnCo) 3 O 4 Powder precursor solution.

[0034] (5) Pour the precursor solution into the crucible, heat at 120°C for 2 hours, then heat ...

Example Embodiment

[0035] Example 3

[0036] As described in this embodiment (MnCo) 3 O 4 The powder preparation method specifically includes the following steps:

[0037] (1) Weigh 0.4 mol of polyvinyl alcohol, 0.2 mol of ethylene glycol and 0.2 mol of adipic acid and pour into a beaker;

[0038] (2) Add 100ml of deionized water to the beaker; place it on a magnetic stirrer, set the heating temperature of the magnetic stirrer to 50℃, and stir for 60 minutes to make the sting mixture fully dissolved.

[0039] (3) Weigh 3.75g of cobalt chloride and 3.75g of manganese chloride crystals, put them into the prepared sting mixture solution, stir with a magnetic stirrer at room temperature for 60 minutes to fully dissolve the cobalt chloride and manganese chloride crystals.

[0040] (4) Place the prepared solution in a constant temperature box and heat it to 75°C for 11 hours to obtain (MnCo) 3 O 4 Powder precursor solution.

[0041] (5) Pour the precursor solution into the crucible, heat at 115°C for 1.5 hours...

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Abstract

The invention belongs to the technical field of ceramic powder preparation and high-temperature ceramic coating surface modification process and discloses a preparation method of manganese-cobalt oxide powder.The method includes: taking a mixture of polyvinyl alcohol, ethylene glycol and adipic acid as a chelating agent and taking cobalt chloride and manganese chloride crystals as raw materials to promote chemical reaction and colloid reaction of cobalt chloride and manganese chloride under certain process conditions to form a MnxCo3-xO4 phase, stabilizing to form a MnxCo3-xO4 precursor, and sintering to form MnxCo3-xO4 powder with a stable structure.The preparation method of the manganese-cobalt oxide powder has the advantages that technical simplicity is achieved, the prepared MnxCo3-xO4 is stable, and MnxCo3-xO4 powder different in manganese-cobalt proportion can be obtained by control of the proportion of the cobalt chloride and the manganese chloride.

Description

technical field [0001] The invention relates to a method for preparing manganese-cobalt oxide powder, and belongs to the technical field of ceramic powder preparation and high-temperature ceramic coating surface modification technology. Background technique [0002] Solid oxide fuel cell interface is one of the key components restricting the development of SOFC. It not only needs to connect the anode and cathode of the single cell, isolate the oxidizing gas and the fuel electrode, but also has good electrical conductivity, excellent anti-oxidation, anti-sulfurization and permeation characteristics, and the service environment is harsh. As the working temperature drops below 700 °C, metal connectors have been widely used, and the preparation of high-temperature oxidation-resistant and good electrical conductivity coatings on their surfaces is one of the main methods to further improve the performance of metal connectors. At present, it is generally believed in the academic c...

Claims

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Application Information

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IPC IPC(8): C01G51/00H01M8/0297
CPCC01G51/00C01P2002/72C01P2002/80C01P2004/03H01M8/0297Y02E60/50Y02P70/50
Inventor 詹肇麟王允良于晓华荣菊唐垚王远
Owner KUNMING UNIV OF SCI & TECH
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