TY - JOUR
T1 - High performance p-type segmented leg of misfit-layered cobaltite and half-Heusler alloy
AU - Hung, Le Thanh
AU - Van Nong, Ngo
AU - Snyder, G. Jeffrey
AU - Viet, Man Hoang
AU - Balke, Benjamin
AU - Han, Li
AU - Stamate, Eugen
AU - Linderoth, Søren
AU - Pryds, Nini
N1 - Funding Information:
BB gratefully acknowledges the financial support by the DFG Priority Program 1386 “Nanostructured Thermoelectric Materials” under proposal BA 4171/2-2. NVN acknowledges the support by the NAFOSTED grant under proposal 103.02-2011.10. The authors would like to thank the Programme Commission on Sustainable Energy and Environment, The Danish Council for Strategic Research for sponsoring the “Oxide thermoelectrics for effective power generation from waste heat” (OTE-POWER) (No. 10-093971) as well as the “CTEC - Center for Thermoelectric Energy Conversion” (No. 1305-00002B) projects. The authors also thank the European Commission for sponsoring the NanoCaTe (FP7-NMP No. 604647) project.
Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2015/7/15
Y1 - 2015/7/15
N2 - In this study, a segmented p-type leg of doped misfit-layered cobaltite Ca2.8Lu0.15Ag0.05Co4O9+δ and half-Heusler Ti0.3Zr0.35Hf0.35CoSb0.8Sn0.2 alloy was fabricated and characterized. The thermoelectric properties of single components, segmented leg, and the electrical contact resistance of the joint part were measured as a function of temperature. The output power generation characteristics of segmented legs were characterized in air under various temperature gradients, ΔT, with the hot side temperature up to 1153 K. At ΔT ≈ 756 K, the maximum conversion efficiency reached a value of ∼5%, which is about 65% of that expected from the materials without parasitic losses. The long-term stability investigation for two weeks at the hot and cold side temperatures of 1153/397 K shows that the segmented leg has good durability as a result of stable and low electrical resistance contacts.
AB - In this study, a segmented p-type leg of doped misfit-layered cobaltite Ca2.8Lu0.15Ag0.05Co4O9+δ and half-Heusler Ti0.3Zr0.35Hf0.35CoSb0.8Sn0.2 alloy was fabricated and characterized. The thermoelectric properties of single components, segmented leg, and the electrical contact resistance of the joint part were measured as a function of temperature. The output power generation characteristics of segmented legs were characterized in air under various temperature gradients, ΔT, with the hot side temperature up to 1153 K. At ΔT ≈ 756 K, the maximum conversion efficiency reached a value of ∼5%, which is about 65% of that expected from the materials without parasitic losses. The long-term stability investigation for two weeks at the hot and cold side temperatures of 1153/397 K shows that the segmented leg has good durability as a result of stable and low electrical resistance contacts.
KW - Power generation efficiency
KW - Segmented oxide-metal alloy
KW - Segmented thermoelectrics
KW - Thermoelectric efficiency
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U2 - 10.1016/j.enconman.2015.03.112
DO - 10.1016/j.enconman.2015.03.112
M3 - Article
AN - SCOPUS:84928475467
SN - 0196-8904
VL - 99
SP - 20
EP - 27
JO - Energy Conversion and Management
JF - Energy Conversion and Management
ER -
