{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["6"],"submitter":["Fu C"],"pubmed_abstract":["Solid-state thermoelectric technology offers a promising solution for converting waste heat to useful electrical power. Both high operating temperature and high figure of merit zT are desirable for high-efficiency thermoelectric power generation. Here we report a high zT of ∼1.5 at 1,200 K for the p-type FeNbSb heavy-band half-Heusler alloys. High content of heavier Hf dopant simultaneously optimizes the electrical power factor and suppresses thermal conductivity. Both the enhanced point-defect and electron-phonon scatterings contribute to a significant reduction in the lattice thermal conductivity. An eight couple prototype thermoelectric module exhibits a high conversion efficiency of 6.2% and a high power density of 2.2 W cm(-2) at a temperature difference of 655 K. These findings highlight the optimization strategy for heavy-band thermoelectric materials and demonstrate a realistic prospect of high-temperature thermoelectric modules based on half-Heusler alloys with low cost, excellent mechanical robustness and stability."],"journal":["Nature communications"],"pagination":["8144"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC4569725"],"repository":["biostudies-literature"],"pubmed_title":["Realizing high figure of merit in heavy-band p-type half-Heusler thermoelectric materials."],"pmcid":["PMC4569725"],"pubmed_authors":["Liu Y","Bai S","Fu C","Chen L","Tang Y","Zhu T","Zhao X"],"additional_accession":[]},"is_claimable":false,"name":"Realizing high figure of merit in heavy-band p-type half-Heusler thermoelectric materials.","description":"Solid-state thermoelectric technology offers a promising solution for converting waste heat to useful electrical power. Both high operating temperature and high figure of merit zT are desirable for high-efficiency thermoelectric power generation. Here we report a high zT of ∼1.5 at 1,200 K for the p-type FeNbSb heavy-band half-Heusler alloys. High content of heavier Hf dopant simultaneously optimizes the electrical power factor and suppresses thermal conductivity. Both the enhanced point-defect and electron-phonon scatterings contribute to a significant reduction in the lattice thermal conductivity. An eight couple prototype thermoelectric module exhibits a high conversion efficiency of 6.2% and a high power density of 2.2 W cm(-2) at a temperature difference of 655 K. These findings highlight the optimization strategy for heavy-band thermoelectric materials and demonstrate a realistic prospect of high-temperature thermoelectric modules based on half-Heusler alloys with low cost, excellent mechanical robustness and stability.","dates":{"release":"2015-01-01T00:00:00Z","publication":"2015 Sep","modification":"2026-05-05T00:48:34.782Z","creation":"2019-03-27T01:58:21Z"},"accession":"S-EPMC4569725","cross_references":{"pubmed":["26330371"],"doi":["10.1038/ncomms9144"]}}