Effective role of filling fraction control in p-type Ce x Fe 3 CoSb 12 skutterudite thermoelectric materials

Sang Hyun Bae, Kyu Hyoung Lee, Soon Mok Choi

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p-type Ce-filled Fe 4-x Co x Sb 12 skutterudite is a promising thermoelectric material with high thermal-to-electric conversion efficiency at mid-to-high temperatures. However, fabrication of a complete single phase is required in order to secure performance reliability due to the charge state of Ce. We herein report that optimization of the Ce filling fraction according to the compositions and synthetic processes is a critical factor to develop a manufacturing process that can be applied to massive production of single phase p-type Ce-filled skutterudite. The durable maximum zT (thermoelectric figure of merit) value of Ce-filled skutterudites fabricated here was 0.81 at 723 K in Ce 0.86 Fe 3 CoSb 12.09 .

Original languageEnglish
Pages (from-to)44-47
Number of pages4
Publication statusPublished - 2019 Feb 1


All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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