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Thermoelectric Properties of Reduced Graphene Oxide/Bi2Te3 Nanocomposites
Shanghai Inst Technol, Peoples R China.
Shanghai Inst Technol, Peoples R China.
Shanghai Inst Technol, Peoples R China.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tunnfilmsfysik. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0003-1785-0864
2019 (engelsk)Inngår i: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 12, nr 12, artikkel-id 2430Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Reduced graphene oxide (rGO)/Bi2Te3 nanocomposite powders with different contents of rGO have been synthesized by a one-step in-situ reductive method. Then, rGO/Bi2Te3 nanocomposite bulk materials were fabricated by a hot-pressing process. The effect of rGO contents on the composition, microstructure, TE properties, and carrier transportation of the nanocomposite bulk materials has been investigated. All the composite bulk materials show negative Seebeck coefficient, indicating n-type conduction. The electrical conductivity for all the rGO/Bi2Te3 nanocomposite bulk materials decreased with increasing measurement temperature from 25 degrees C to 300 degrees C, while the absolute value of Seebeck coefficient first increased and then decreased. As a result, the power factor of the bulk materials first increased and then decreased, and a power factor of 1340 mu Wm(-1)K(-2) was achieved for the nanocomposite bulk materials with 0.25 wt% rGO at 150 degrees C.

sted, utgiver, år, opplag, sider
MDPI , 2019. Vol. 12, nr 12, artikkel-id 2430
Emneord [en]
reduced graphene oxide; Bi2Te3; composite; thermoelectric
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-159070DOI: 10.3390/en12122430ISI: 000473821400203OAI: oai:DiVA.org:liu-159070DiVA, id: diva2:1338411
Merknad

Funding Agencies|National Natural Science Foundation of China [61504081, 11811530636, 61611530550]; Shanghai Innovation Action Plan Project [17090503600]; Program for Professor of Special Appointment (Young Eastern Scholar Program) at Shanghai Institutions of Higher Learning [QD2015039]; Knut and Alice Wallenberg Foundation; Swedish Energy Agency [46519-1]

Tilgjengelig fra: 2019-07-22 Laget: 2019-07-22 Sist oppdatert: 2019-08-20

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