High temperature thermoelectric properties of delafossite CuBO2

Author

Ruttanapun, Chesta ; Jindajitawat, Phumin ; Buranasiri, Prathan ; Thowladda, Warawoot ; Neeyakorn, Worakarn ; Naenkieng, Daengdesh ; Harnwunggmoung, Adul ; Charoenphakdee, Anek ; Boonyopakorn, Narongchai ; Thanachayanont, Chanchana

Author_Institution

Dept. of Phys., King Mongkut´s Inst. of Technol. Ladkrabang, Bangkok, Thailand

fYear

2014

fDate

5-8 March 2014

Firstpage

1

Lastpage

4

Abstract

CuBO₂ is prepared by a solid-state reaction method to investigate thermoelectric properties in high temperature. The XRD result confirms the CuBO₂ compound existing in this method. The Seebeck reveals the compound displays p-type thermoelectric material. The experimental results of electrical resistivity exhibited results of 0.004 S/cm to 0.038 S/cm with the temperature range of 650 to 830 K. The Seebeck value is in the range of 450 μV/K to 950 μV/K, and the thermal conductivity is in the range of 1.4 × 10^-5 to 5.3 × 10^-5 W/m-K² with the same temperature. The maximum PF and ZT is 5.3 × 10^-5 W/m-K² and 0.0016, respectively, at 960 K. This work demonstrates that the CuBO₂ delafossite-oxide compound displays the p-type thermoelectric materials.

Keywords

Seebeck effect; X-ray diffraction; copper compounds; electrical resistivity; thermal conductivity; CuBO₂; Seebeck property; XRD; delafossite-oxide compound; electrical resistivity; high-temperature thermoelectric properties; p-type thermoelectric materials; solid-state reaction; temperature 650 K to 830 K; thermal conductivity; Compounds; Conductivity; Materials; Temperature distribution; Temperature measurement; Thermal conductivity; CuBO2; Delafossite; Solid state; Thermoelectric;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Communication Technology, Electronic and Electrical Engineering (JICTEE), 2014 4th Joint International Conference on

Conference_Location

Chiang Rai

Print_ISBN

978-1-4799-3854-4

Type

conf

DOI

10.1109/JICTEE.2014.6804067

Filename

6804067