Patent ID: 8217255

Claim:
A method of producing a thermoelectric conversion element, comprising: preparing a dispersion liquid by mixing slurry containing ceramic particles with salts of at least two elements that constitute a thermoelectric conversion material, and then, precipitating the at least two elements that constitute the thermoelectric conversion material on the ceramic particles in the dispersion liquid, wherein the preparing comprises preparing a first solution prepared by mixing a salt that dissolves to form a solution with a pH equal to or higher than 1 with the slurry containing the ceramic particles, and a second solution that contains a salt that dissolves to form a solution with the pH lower than 1; performing washing; performing heating treatment; and performing sintering, wherein contact between the second solution among solutions of the salts and the slurry containing the ceramic particles is avoided, or the second solution contacts the slurry containing the ceramic particles for a first time when the at least two elements that constitute the thermoelectric conversion material are precipitated.