[12p-PA4-1~20] 9.4 Thermoelectric conversion

[12p-PA4-1] (Cu,Ag)₂SnS₃ Thermoelectrics

〇Sigeyuki Nakamura¹, Shin'ya Shiga², Tetsuya Okuyama³, Takehito Kato⁴, Hideaki Araki⁵, Akiko Takeuchi⁵, Toshiyuki Yamaguchi⁶, Yoji Akaki⁷, Satoru Seto⁸, Masatoshi Takeda⁹ (1.NIT Tsuyama Coll., 2.NIT Niihama Coll., 3.NIT Kurume Coll., 4.NIT Oyama Coll., 5.NIT Nagaoka Coll., 6.NIT Wakayama Coll., 7.NIT Miyakonojo Coll., 8.NIT Ishikawa Coll., 9.Nagaoka Univ. Tech.)

Keywords:Cu2SnS3, thermoelectrics, silver

Cu₂SnS₃ (CTS) is attractive for an abundant non-toxic thermoelectric material because of high Seebeck coefficient and low thermal conductivity. We aim at improving thermoelectric performance by solid solution due to the Ag addition accompanied by a decrease in thermal conductivity. Consequently, thermal conductivity less than 1.0 W/(K·m) is obtained. However, low electrical conductivity results in low thermoelectric performance of less than 0.05.