dc.contributor.author | Kanas, Nikola | |
dc.contributor.author | Bittner, Michael | |
dc.contributor.author | Desissa, Temesgen Debelo | |
dc.contributor.author | Singh, Sathya Prakash | |
dc.contributor.author | Norby, Truls Eivind | |
dc.contributor.author | Feldhoff, Armin | |
dc.contributor.author | Grande, Tor | |
dc.contributor.author | Wiik, Kjell | |
dc.contributor.author | Einarsrud, Mari-Ann | |
dc.date.accessioned | 2018-08-31T07:16:19Z | |
dc.date.available | 2018-08-31T07:16:19Z | |
dc.date.created | 2018-08-30T13:09:31Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | ACS Omega. 2018, 3 9899-9906. | nb_NO |
dc.identifier.issn | 2470-1343 | |
dc.identifier.uri | http://hdl.handle.net/11250/2560180 | |
dc.description.abstract | All-oxide thermoelectric modules for energy harvesting are attractive due to high temperature stability, low cost, and the potential to use non-scarce and non-toxic elements. Thermoelectric modules are mostly fabricated in the conventional π-design, associated with the challenge of unstable metallic interconnects at high temperature. Here, we report on a novel approach to fabrication of a thermoelectric module with an in situ formed p-p-n junction made of state-of-the-art oxides Ca3Co4-xO9+δ (p-type) and CaMnO3-CaMn2O4 composite (n-type). The module was fabricated by spark plasma co-sintering of p- and n-type powders partly separated by insulating LaAlO3. Where the n- and p-type materials originally were in contact, a layer of p-type Ca3CoMnO6 was formed in situ. The hence formed p-p-n junction exhibited ohmic behavior and a transverse thermoelectric effect, boosting the open circuit voltage of the module. The performance of the module was characterized at 700 - 900 °C, with the highest power output of 5.7 mW (around 23 mW/cm2) at 900 °C and a temperature difference of 160 K. The thermoelectric properties of the p- and n-type materials were measured in the temperature range 100 - 900 °C, where the highest zT of 0.39 and 0.05 were obtained at 700 and 800 °C, respectively, for Ca3Co4-xO9+δ and the CaMnO3-CaMn2O4 composite. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | American Chemical Society | nb_NO |
dc.title | All-oxide thermoelectric module with in situ formed non-rectifying complex p-p-n junction and transverse thermoelectric effect | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.pagenumber | 9899-9906 | nb_NO |
dc.source.volume | 3 | nb_NO |
dc.source.journal | ACS Omega | nb_NO |
dc.identifier.doi | 10.1021/acsomega.8b01357 | |
dc.identifier.cristin | 1605535 | |
dc.relation.project | Norges forskningsråd: 228854 | nb_NO |
dc.description.localcode | This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes. | nb_NO |
cristin.unitcode | 194,66,35,0 | |
cristin.unitname | Institutt for materialteknologi | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |