dc.identifier.uri |
http://dx.doi.org/10.15488/4121 |
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dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/4155 |
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dc.contributor.author |
Kanas, Nikola
|
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dc.contributor.author |
Bittner, Michael
|
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dc.contributor.author |
Debelo Desissa, Temesgen
|
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dc.contributor.author |
Singh, Sathya Prakash
|
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dc.contributor.author |
Norby, Truls
|
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dc.contributor.author |
Feldhoff, Armin
|
ger |
dc.contributor.author |
Grande, Tor
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dc.contributor.author |
Wiik, Kjell
|
ger |
dc.contributor.author |
Einarsrud, Mari-Ann
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dc.date.accessioned |
2018-12-06T14:53:08Z |
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dc.date.available |
2018-12-06T14:53:08Z |
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dc.date.issued |
2018 |
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dc.identifier.citation |
Kanas, N. et al.: All-Oxide Thermoelectric Module with in Situ Formed Non-Rectifying Complex p–p–n Junction and Transverse Thermoelectric Effect. In: ACS Omega 3 (2018), S. 9899-9906. DOI: https://doi.org/10.1021/acsomega.8b01357 |
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dc.description.abstract |
All-oxide thermoelectric modules for energy harvesting are attractive because of high-temperature stability, low cost, and the potential to use nonscarce and nontoxic 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 for 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. |
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dc.language.iso |
eng |
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dc.publisher |
Washington D.C. : American Chemical Society |
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dc.relation.ispartofseries |
ACS Omega 3 (2018) |
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dc.rights |
ACS AuthorChoice License |
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dc.rights.uri |
https://pubs.acs.org/page/policy/authorchoice_termsofuse.html |
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dc.subject |
Electrochemistry |
eng |
dc.subject |
Materials science |
eng |
dc.subject |
Piezoelectricity and Thermoelectricity |
eng |
dc.subject |
Semiconductors |
eng |
dc.subject.ddc |
540 | Chemie
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dc.title |
All-Oxide Thermoelectric Module with in Situ Formed Non-Rectifying Complex p–p–n Junction and Transverse Thermoelectric Effect |
eng |
dc.type |
Article |
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dc.type |
Text |
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dc.relation.doi |
10.1021/acsomega.8b01357 |
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dc.bibliographicCitation.firstPage |
9899 |
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dc.bibliographicCitation.lastPage |
9906 |
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dc.description.version |
publishedVersion |
ger |
tib.accessRights |
frei zug�nglich |
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