Ba6−3xNd8+2xTi18O54 tungsten bronze: a new high-temperature n-type oxide thermoelectric

Feridoon Azough; Robert Freer; Stephen R. Yeandel; Jakub D. Baran; Marco Molinari; Stephen C. Parker; Emmanuel Guilmeau; Demie Kepaptsoglou; Quentin Ramasse; Andy Knox; Duncan Gregory; Douglas Paul; Manosh Paul; Andrea Montecucco; Jonathan Siviter; Paul Mullen; Wenguan Li; Guang Han; E. A. Man; Hasan Baig; Tapas Mallick; Nazmi Sellami; Gao Min; Tracy Sweet

doi:10.1007/s11664-015-4275-6

Ba_6−3xNd_8+2xTi₁₈O₅₄ tungsten bronze: a new high-temperature n-type oxide thermoelectric

Feridoon Azough, Robert Freer, Stephen R. Yeandel, Jakub D. Baran, Marco Molinari, Stephen C. Parker, Emmanuel Guilmeau, Demie Kepaptsoglou, Quentin Ramasse, Andy Knox, Duncan Gregory, Douglas Paul, Manosh Paul, Andrea Montecucco, Jonathan Siviter, Paul Mullen, Wenguan Li, Guang Han, E. A. Man, Hasan BaigTapas Mallick, Nazmi Sellami, Gao Min, Tracy Sweet

Research output: Contribution to journal › Article › peer-review

16 Citations (SciVal)

Abstract

Semiconducting Ba_6−3xNd_8+2xTi₁₈O₅₄ ceramics (with x = 0.00 to 0.85) were synthesized by the mixed oxide route followed by annealing in a reducing atmosphere; their high-temperature thermoelectric properties have been investigated. In conjunction with the experimental observations, atomistic simulations have been performed to investigate the anisotropic behavior of the lattice thermal conductivity. The ceramics show promising n-type thermoelectric properties with relatively high Seebeck coefficient, moderate electrical conductivity, and temperature-stable, low thermal conductivity; For example, the composition with x = 0.27 (i.e., Ba_5.19Nd_8.54Ti₁₈O₅₄) exhibited a Seebeck coefficient of S_1000K = 210 µV/K, electrical conductivity of σ_1000K = 60 S/cm, and thermal conductivity of k_1000K = 1.45 W/(m K), leading to a ZT value of 0.16 at 1000 K.

Original language	English
Pages (from-to)	1894-1899
Number of pages	6
Journal	Journal of Electronic Materials
Volume	45
Issue number	3
DOIs	https://doi.org/10.1007/s11664-015-4275-6
Publication status	Published - Mar 2016

Keywords

modelling
molecular dynamics
Oxide ceramic
thermal conductivity
thermoelectric
titanate
tungsten bronze

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10.1007/s11664-015-4275-6Licence: CC BY

http://dx.doi.org/10.1007/s11664-015-4275-6Licence: CC BY

Cite this

Azough, F., Freer, R., Yeandel, S. R., Baran, J. D., Molinari, M., Parker, S. C., Guilmeau, E., Kepaptsoglou, D., Ramasse, Q., Knox, A., Gregory, D., Paul, D., Paul, M., Montecucco, A., Siviter, J., Mullen, P., Li, W., Han, G., Man, E. A., ... Sweet, T. (2016). Ba_6−3xNd_8+2xTi₁₈O₅₄ tungsten bronze: a new high-temperature n-type oxide thermoelectric. Journal of Electronic Materials, 45(3), 1894-1899. https://doi.org/10.1007/s11664-015-4275-6

Azough, F, Freer, R, Yeandel, SR, Baran, JD, Molinari, M, Parker, SC, Guilmeau, E, Kepaptsoglou, D, Ramasse, Q, Knox, A, Gregory, D, Paul, D, Paul, M, Montecucco, A, Siviter, J, Mullen, P, Li, W, Han, G, Man, EA, Baig, H, Mallick, T, Sellami, N, Min, G & Sweet, T 2016, 'Ba_6−3xNd_8+2xTi₁₈O₅₄ tungsten bronze: a new high-temperature n-type oxide thermoelectric', Journal of Electronic Materials, vol. 45, no. 3, pp. 1894-1899. https://doi.org/10.1007/s11664-015-4275-6

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title = "Ba6−3xNd8+2xTi18O54 tungsten bronze: a new high-temperature n-type oxide thermoelectric",

abstract = "Semiconducting Ba6−3xNd8+2xTi18O54 ceramics (with x = 0.00 to 0.85) were synthesized by the mixed oxide route followed by annealing in a reducing atmosphere; their high-temperature thermoelectric properties have been investigated. In conjunction with the experimental observations, atomistic simulations have been performed to investigate the anisotropic behavior of the lattice thermal conductivity. The ceramics show promising n-type thermoelectric properties with relatively high Seebeck coefficient, moderate electrical conductivity, and temperature-stable, low thermal conductivity; For example, the composition with x = 0.27 (i.e., Ba5.19Nd8.54Ti18O54) exhibited a Seebeck coefficient of S1000K = 210 µV/K, electrical conductivity of σ1000K = 60 S/cm, and thermal conductivity of k1000K = 1.45 W/(m K), leading to a ZT value of 0.16 at 1000 K.",

keywords = "modelling, molecular dynamics, Oxide ceramic, thermal conductivity, thermoelectric, titanate, tungsten bronze",

author = "Feridoon Azough and Robert Freer and Yeandel, {Stephen R.} and Baran, {Jakub D.} and Marco Molinari and Parker, {Stephen C.} and Emmanuel Guilmeau and Demie Kepaptsoglou and Quentin Ramasse and Andy Knox and Duncan Gregory and Douglas Paul and Manosh Paul and Andrea Montecucco and Jonathan Siviter and Paul Mullen and Wenguan Li and Guang Han and Man, {E. A.} and Hasan Baig and Tapas Mallick and Nazmi Sellami and Gao Min and Tracy Sweet",

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T2 - a new high-temperature n-type oxide thermoelectric

AU - Azough, Feridoon

AU - Freer, Robert

AU - Yeandel, Stephen R.

AU - Baran, Jakub D.

AU - Molinari, Marco

AU - Parker, Stephen C.

AU - Guilmeau, Emmanuel

AU - Kepaptsoglou, Demie

AU - Ramasse, Quentin

AU - Knox, Andy

AU - Gregory, Duncan

AU - Paul, Douglas

AU - Paul, Manosh

AU - Montecucco, Andrea

AU - Siviter, Jonathan

AU - Mullen, Paul

AU - Li, Wenguan

AU - Han, Guang

AU - Man, E. A.

AU - Baig, Hasan

AU - Mallick, Tapas

AU - Sellami, Nazmi

AU - Min, Gao

AU - Sweet, Tracy

PY - 2016/3

Y1 - 2016/3

N2 - Semiconducting Ba6−3xNd8+2xTi18O54 ceramics (with x = 0.00 to 0.85) were synthesized by the mixed oxide route followed by annealing in a reducing atmosphere; their high-temperature thermoelectric properties have been investigated. In conjunction with the experimental observations, atomistic simulations have been performed to investigate the anisotropic behavior of the lattice thermal conductivity. The ceramics show promising n-type thermoelectric properties with relatively high Seebeck coefficient, moderate electrical conductivity, and temperature-stable, low thermal conductivity; For example, the composition with x = 0.27 (i.e., Ba5.19Nd8.54Ti18O54) exhibited a Seebeck coefficient of S1000K = 210 µV/K, electrical conductivity of σ1000K = 60 S/cm, and thermal conductivity of k1000K = 1.45 W/(m K), leading to a ZT value of 0.16 at 1000 K.

AB - Semiconducting Ba6−3xNd8+2xTi18O54 ceramics (with x = 0.00 to 0.85) were synthesized by the mixed oxide route followed by annealing in a reducing atmosphere; their high-temperature thermoelectric properties have been investigated. In conjunction with the experimental observations, atomistic simulations have been performed to investigate the anisotropic behavior of the lattice thermal conductivity. The ceramics show promising n-type thermoelectric properties with relatively high Seebeck coefficient, moderate electrical conductivity, and temperature-stable, low thermal conductivity; For example, the composition with x = 0.27 (i.e., Ba5.19Nd8.54Ti18O54) exhibited a Seebeck coefficient of S1000K = 210 µV/K, electrical conductivity of σ1000K = 60 S/cm, and thermal conductivity of k1000K = 1.45 W/(m K), leading to a ZT value of 0.16 at 1000 K.

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KW - molecular dynamics

KW - Oxide ceramic

KW - thermal conductivity

KW - thermoelectric

KW - titanate

KW - tungsten bronze

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Ba_6−3xNd_8+2xTi₁₈O₅₄ tungsten bronze: a new high-temperature n-type oxide thermoelectric

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Keywords

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Nanostructured Thermoelectric Oxides for Energy Generation: A Combined Experimental and Modelling Investigation

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Ba6−3xNd8+2xTi18O54 tungsten bronze: a new high-temperature n-type oxide thermoelectric

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Nanostructured Thermoelectric Oxides for Energy Generation: A Combined Experimental and Modelling Investigation

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High Performance Computing (HPC) Facility

Cite this

Ba_6−3xNd_8+2xTi₁₈O₅₄ tungsten bronze: a new high-temperature n-type oxide thermoelectric