Journal Article

FZJ-2016-00412

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Effect of Carbon Nanotubes on Thermoelectric Properties in Zn$_{0.98}$Al$_{0.02}$O

Dreßler, C. (Corresponding author) ; Löhnert, R. ; Gonzalez, J.FZJ* ; Guillon, O.FZJ* ; Töpfer, J. ; Teichert, S.

2016
TMS Warrendale, Pa

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Please use a persistent id in citations: doi:10.1007/s11664-015-4070-4

Abstract: Thermoelectric oxides can provide the advantage of high-temperature stability in oxygen-containing atmospheres. It is known that the incorporation of multiwalled carbon nanotubes (mw-CNT) can change the thermoelectric as well as the structural properties of oxides. Here, we report the influence of mw-CNT on the thermoelectric properties of Al-doped ZnO (AZO). The preparation of the mw-CNT-added AZO was done using an ultrasonic mixing of the starting materials followed by a spark plasma sintering process under vacuum. The Seebeck coefficient S, thermal conductivity λ and electrical conductivity σ were determined in the temperature range between 300 K and 900 K. It was observed that the thermal conductivity is significantly reduced by the incorporation of the mw-CNT. At the same time, the electrical conductivity is increased by a factor of 21 from 8700 S/m to 190,000 S/m. The Power factor PF=S2σ indicates that the addition of mw-CNT improves the thermoelectric properties of Al doped ZnO in comparison to the reference sample prepared with same process but without mw-CNT

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Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
2. JARA-ENERGY (JARA-ENERGY)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

Appears in the scientific report 2016

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Database coverage:
Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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