Thermoelectric high power generating module made by n-Ba8Al xSi46-x clathrate

Shinji Munetoh, Makoto Arita, Hideki Makiyama, Teruaki Motooka

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We have developed a new thermoelectric power-generating module composed of 72 pieces of n-type Ba8Al18Si28 clathrate elements made by arc melting. The Seebeck coefficient, specific electric resistance and thermal conductivity of Ba8Al18Si 28 clathrate were 250 μV/K, 1.9 mΩcm and 3.1 W/mK at 500°C, respectively, and the thermoelectric figure of merit (ZT) was 0.8. The new thermoelectric module was constructed using only n-type thermoelectric elements connected in series with hook-shaped electrodes. The open-circuit voltage of the module was 1.8 V at the hot-side temperature of 500°C. The maximum electric power was 0.24 W. The module was successfully used to charge lithium-ion batteries for mobile phones.

Original languageEnglish
Title of host publicationEnergy Harvesting-From Fundamentals to Devices
Number of pages6
Publication statusPublished - 2008
Event2008 MRS Spring Meeting - San Francisco, CA, United States
Duration: Mar 24 2008Mar 28 2008


Other2008 MRS Spring Meeting
CountryUnited States
CitySan Francisco, CA


All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Munetoh, S., Arita, M., Makiyama, H., & Motooka, T. (2008). Thermoelectric high power generating module made by n-Ba8Al xSi46-x clathrate. In Energy Harvesting-From Fundamentals to Devices (Vol. 1102, pp. 7-12)