METHOD FOR MANUFACTURING CA3CO4O9-BASED THERMOELECTRIC MATERIALS USING SOLUTION COMBUSTION PROCESS

摘要

The present invention relates to a method for producing a Ca ₃ Co ₄ O ₉ -based thermoelectric material using a solution combustion method. Ca ₃ Co ₄ O _9- based thermoelectric material manufacturing method using the solution combustion method according to the present invention, the solution of any one of the group consisting of aspartic acid, glutamic acid, alanine, glycine, urea fuel and metal nitrate in distilled water After the preparation, by heating the solution, self-exploding to synthesize a powder, calcining the synthesized powder, pulverizing the calcined powder, drying the pulverized powder and applying a pressure to produce a molded body And heating the molded body to a sintering temperature, and maintaining the sintered temperature at a sintering temperature for a predetermined time and then cooling it to room temperature. As described above, according to the present invention, Ca ₃ Co ₄ O ₉ -based thermoelectric powder may be synthesized in a short time through a simple manufacturing process, and no toxic substances are generated during the synthesis process. Further, the size is small and high purity Ca ₃ Co ₄ O ₉ based thermoelectric material powders and thermal properties can be obtained an excellent Ca ₃ Co ₄ O ₉ based thermoelectric material.