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Enhanced thermoelectric performance by Hf substitution in p-type half-Heusler TiNi0.8Co0.2Sn
https://aist.repo.nii.ac.jp/records/2003434
https://aist.repo.nii.ac.jp/records/2003434a40c4517-9a98-4e6e-8e30-2b229602f191
| Name / File | License | Actions |
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manuscript_p-TiHfNiSn_rev.pdf (853 KB)
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| Item type | AIST Metadata(journal article)(1) | |||||||||
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| PubDate | 2026-03-25 | |||||||||
| Title | ||||||||||
| Title | Enhanced thermoelectric performance by Hf substitution in p-type half-Heusler TiNi0.8Co0.2Sn | |||||||||
| Language | en | |||||||||
| Description | ||||||||||
| Description Type | Abstract | |||||||||
| Description | The half-Heusler TiNiSn alloy is a promising candidate for thermoelectric power generation, capable of directly converting waste heat into electric power, due to its high thermoelectric performance over a wide temperature range from 500 to 1000 K. Here, we demonstrate that Hf substitution in the p-type half-Heusler TiNi0.8Co0.2Sn alloy significantly enhances thermoelectric performance within the miscibility gap region of the binary TiNiSn-HfNiSn phase diagram. The thermoelectric figure of merit (ZT) significantly increases from 0.03 for TiNi0.8Co0.2Sn to 0.26 for Ti0.5Hf0.5Ni0.8Co0.2Sn at 800 K. This enhancement of thermoelectric performance in p-type TiNiSn enables the construction of thermoelectric modules composed solely of half-Heusler TiNiSn based alloys, which are expected to exhibit high thermal stability useful for long-term thermoelectric power generation. | |||||||||
| Language | en | |||||||||
| Author (Creator) name |
Mikami, Masashi
× Mikami, Masashi （代表著者）
ORCID
0000-0002-1866-824X
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| Access Rights | ||||||||||
| Access Rights | open access | |||||||||
| Access Rights URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| Terms of Use | ||||||||||
| Rights | This is an accepted manuscript. The final version is available at https://doi.org/10.1063/5.0257112 | |||||||||
| Language | en | |||||||||
| Keyword | ||||||||||
| Language | ja | |||||||||
| Subject Scheme | Other | |||||||||
| Subject | 無機デバイス関連材料 | |||||||||
| Keyword | ||||||||||
| Language | ja | |||||||||
| Subject Scheme | Other | |||||||||
| Subject | エネルギー材料 | |||||||||
| Keyword | ||||||||||
| Language | ja | |||||||||
| Subject Scheme | Other | |||||||||
| Subject | 省エネルギー材料 | |||||||||
| Keyword | ||||||||||
| Language | ja | |||||||||
| Subject Scheme | Other | |||||||||
| Subject | 粉末冶金 | |||||||||
| Keyword | ||||||||||
| Language | en | |||||||||
| Subject Scheme | Other | |||||||||
| Subject | Inorganic device-related materials | |||||||||
| Keyword | ||||||||||
| Language | en | |||||||||
| Subject Scheme | Other | |||||||||
| Subject | Energy materials | |||||||||
| Keyword | ||||||||||
| Language | en | |||||||||
| Subject Scheme | Other | |||||||||
| Subject | Energy-saving materials | |||||||||
| Keyword | ||||||||||
| Language | en | |||||||||
| Subject Scheme | Other | |||||||||
| Subject | Powder metallurgy | |||||||||
| Publisher | ||||||||||
| Publisher | AIP Publishing | |||||||||
| Language | en | |||||||||
| Date | ||||||||||
| Date | 2026-03-25 | |||||||||
| Date Type | Issued | |||||||||
| Language | ||||||||||
| Language | eng | |||||||||
| Resource Type | ||||||||||
| Resource Type Identifier | http://purl.org/coar/resource_type/c_6501 | |||||||||
| Resource Type | journal article | |||||||||
| Version Type | ||||||||||
| Version Type | AM | |||||||||
| Version Type Resource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||
| Relation | ||||||||||
| Relation Type | isVersionOf | |||||||||
| Identifier Type | DOI | |||||||||
| Related Identifier | https://doi.org/10.1063/5.0257112 | |||||||||
| Source Title | ||||||||||
| Source Title | Applied Physics Letters | |||||||||
| Language | en | |||||||||
| Volume Number | ||||||||||
| Volume | 126 | |||||||||
| Issue Number | ||||||||||
| Issue | 13 | |||||||||
