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Abstract p-type Ce-filled Fe4-xCoxSb12 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… Click to show full abstract
Abstract p-type Ce-filled Fe4-xCoxSb12 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 Ce0.86Fe3CoSb12.09.
Journal Title: Intermetallics
Year Published: 2019
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