| 摘要 |
PROBLEM TO BE SOLVED: To further enhance a dimensionless figure of merit ZT while maintaining strength of a thermoelectric material as much as possible.SOLUTION: A thermoelectric material is produced by sintering a mixture obtained by mixing a base material particle comprising a thermoelectric material and a hollow particle having a melting point of 450°C or above and a thermal conductivity lower than that of the base material particle. The melting point of the base material particle is lower than the melting point of the hollow particle. The hollow particle has an average secondary particle diameter of 20 nm or more and 500 nm or less, and is contained in the range of 2.5-30% in volume ratio with respect to the base material particle in the thermoelectric material after sintering. |
