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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

AI Technical Summary

Problems solved by technology

At present, there are few methods for preparing manganese cobalt oxide powder

Method used

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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

Experimental program
Comparison scheme
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Embodiment 1

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

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

[0024] (2) Add 100ml of deionized water into 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 fully dissolve the chelating agent.

[0025] (3) Weigh 5g of cobalt chloride and 2.5g of manganese chloride crystals, put them into the prepared chelating agent 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 an incubator, heat it to 70°C for 10 hours, and 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 heat at 5min / °C t...

Embodiment 2

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

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

[0031] (2) Add 100ml of deionized water into the beaker; place it on a magnetic stirrer, set the heating temperature of the magnetic stirrer to 60°C, and stir for 60 minutes to fully dissolve the chelating agent.

[0032] (3) Weigh 2.5g of cobalt chloride and 5g of manganese chloride crystals, put them into the prepared chelating agent 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 an incubator, heat it to 80°C for 12 hours, and 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 at 10min / °C...

Embodiment 3

[0036] Described in this example (MnCo) 3 o 4 The preparation method of powder specifically comprises the following steps:

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

[0038] (2) Add 100ml of deionized water into the beaker; place it on a magnetic stirrer, set the heating temperature of the magnetic stirrer to 50°C, and stir for 60 minutes to fully dissolve the chelating agent.

[0039] (3) Weigh 3.75g of cobalt chloride and 3.75g of manganese chloride crystals, put them into the prepared chelating agent solution, and 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 an incubator, heat it to 75°C for 11 hours, and 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, then heat at 8min / °C to 420°...

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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
CPCH01M8/0297C01G51/00C01P2002/80C01P2002/72C01P2004/03Y02P70/50Y02E60/50
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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