About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications X
|
Presentation Title |
Seebeck Coefficient Enhancement in CoSb3-Skutterudite Induced by Constructive Magneto-composite Effects |
Author(s) |
Cedric Bourges, Wenhao Zhang, Bhuvanesh Srinivasan, Naoyuki Kawamoto, Masanori Mitome, Kazuaki Kobayashi, Jean-Francois Halet, David Berthebaud, Takao Mori |
On-Site Speaker (Planned) |
Cedric Bourges |
Abstract Scope |
Filled skutterudite compounds have been extensively studied as one of the most promising TE materials based on the PGEC concept. However, non-desirable behavior has been reported upon the subtle oxidation of the rare-earth filled skutterudite make it attractive to develop high-performance skutterudite free of those elements.
We were focused on the n-type Skutterudite to realize a high-performance TE material targeting room temperature. We adopted an original approach center on the co-doping of MxCo1-xSb2.85Te0.15 – skutterudite with magnetic elements. Through calculation, we identified elements susceptible to substitute the Co and induce a magnetic moment in the CoSb3 phase. We revealed that a significant enhancement of 45% of the overall PF can be achieved thanks to a spectacular increasing of the Seebeck coefficient in the co-doped CoSb3. Based on the combined experimental and theoretical findings, we highlighted that a plethora of factors constructively contributed to the large enhancement of the Seebeck coefficient. |
Proceedings Inclusion? |
Planned: |
Keywords |
Energy Conversion and Storage, Electronic Materials, |