Abstract
The renaissance of thermoelectrics has been bolstered by the contemporary call for energy harvesting technologies. The potential use of thermoelectrics for direct conversion of waste heat into electricity is gaining momentum and oxides are envisaged as the most promising materials for high temperature applications. Nevertheless, prior to the commercial deploying of this technology, the efficiency of thermoelectric oxides needs to be perfected. Inevitably, the large thermal conductivity of oxides needs to be reduced. Several strategies are currently being explored, including sol-gel processing of oxide thermoelectrics. The higher density of interfaces in nanoceramics fabricated from sol-gel processed powders is regarded as an effective approach to enhance phonon scattering, and thereby reduce thermal conductivity. In this chapter, the fundamentals of thermoelectrics are presented alongside the most promising oxides for the fabrication of thermoelectric modules for energy harvesting. Potential benefits of using sol-gel processed powders are highlighted and the current state-of-art all-oxide thermoelectric modules are presented. Finally, we proposed the exploration of hexagonal perovskites.
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References
Alphabeth Energy, News Release (2010) Alphabet energy awarded government grants totaling $320,000. www.alphabethenergy.com
Amerigon Incorporated, News Release (2009) Amerigon subsidiary BSST to test thermoelectric waste heat recovery system on BMW group and Ford vehicles. www.amerigon.com
SDK, News release (2010) SDK and PLANTEC test thermoelectric power generation modules in waste incinerator. http://www.showa-denko.com
Lemon S (2008) Murata working on turning laptop heat into power, IDG News Service
Koumoto K, Wang Y, Zhang R, Kosuga A, Funahashi R (2011) Oxide thermoelectric materials: a nanostructuring approach. Ann Rev Mater Res 40:363–394. doi:10.1146/annurev-matsci-070909-104521
Vineis CJ, Ali Shakouri A, Majumdar A, Kanatzidis MG (2010) Nanostructured thermoeletrics: big efficiency gains from small features. Adv Mater 22:3970–3980. doi:10.1002/adma.201000839
Newnham R (2004) Properties of materials: anisotropy, symmetry and structure. Oxford University Press, New York
Kittel C (1995) Introduction to solid state physics, 7th edn. Wiley, New York
Ohtaki M, Tsubota T, Eguchi K, Arai H (1996) High-temperature thermoelectric proper-ties of (Zn1-xAlx)O. J Appl Phys 79:1816–1818
Ohtaki M, Araki K, Yamamoto K (2009) High thermoelectric performance of dually doped ZnO ceramics. J Electr Mater 38:1234–1238. doi:10.1007/s11664-009-0816-1
Hopper EM, Zhu Q, Song JH, Peng H, Freeman AJ, Mason TO (2011) Electronic and thermoelectric analysis of phases in the In2O3(ZnO)k system. J Appl Phys 109:013713–013714. doi:10.1063/1.3530733
Kinemuchi Y, Mikami M, Kobayashi K, Watari K, Hotta Y (2010) Thermoelectric properties of nanograined ZnO. J Elec Mat 39:2059–2063. doi:10.1007/s11664-009-1009-7
Lee S, Yang G, Wilke RHT, Trolier-McKinstry S, Randall CA (2009) Thermopower in highly reduced n-type ferroelectric and related perovskite oxides and the role of heterogeneous non-stoichiometry. Phys Rev B 79:134110
Lee KH, Kim SW, Ohta H, Koumoto K (2006) Ruddlesden-Popper phases as thermoelectric oxides: Nb-doped SrO(SrTiO3)n (n = 1, 2). J Appl Phys 100:063717
Terasaki I, Sasago Y, Uchinokura K (1997) Large thermoelectric power in NaCo2O4 single crystals. Phys Rev B 56:12685–12687. doi:0163-1829/97/56~20/12685
Cai KF, Müller E, Drašar C, Mrotzek A (2003) Preparation and thermoelectric properties of Al-doped ZnO ceramics. Mat Sci Eng 104:45–48. doi:10.1016/S0921-5107(03)00280-0
Shang PP, Zhang BP, Li JF, Ma N (2010) Effect of sintering temperature on thermoelectric properties of La-doped SrTiO3 ceramics prepared by sol-gel process and spark plasma sintering. Solid State Sci 12:1341–1346. doi:10.1016/j.solidstatesciences.2010.05.005
Liu CJ, Liao JY, Wu TW, Jen BY (2004) Preparation and transport properties of aqueous sol-gel synthesized NaCo2O4-δ. J Mater Sci 39:4569–4573
Zhang YF, Lu QM, Zhang QY (2006) Synthesis and characterization of Ca3Co4O9 nanoparticles by citrate sol-gel method. Mater Lett 60:2443–2446. doi:10.1016/j.matlet.2006.01.013
Nan J, Wu J, Deng Y, Nan CW (2003) Synthesis and thermoelectric properties of (NaxCa1-x)3Co4O9 ceramics. J Eur Ceram Soc 23:859–863
Xu J, Wei C, Jia K (2010) Thermoelectric performance of textured Ca3-xYbxCo4O9-δ ceramics. J Alloys Compd 500:227–230. doi:10.1016/j.jallcom.2010.04.014
Pei J, Chen G, Zhou N, Lu DQ, Xiao F (2011) High temperature transport and thermoelectric properties of Ca3-xErxCo4O9+δ. Phys B 406:571–574. doi:10.1016/j.physb.2010.11.043
Matsubara I, Funahashi T, Takeuchi T, Sodeoka S, Shimizu T and Ueno K Fabrication of an all-oxide thermoelectric power generator. Appl Phys Lett 78:3627–3629. doi: 0003-6951/2001/78(23)/3627/3
Reddy ES, Noudem JG, Hebert S, Goupil C (2005) Fabrication and properties of four-leg ox-ide thermoelectric modules. J Phys D Appl Phys 38:3751–3755. doi:10.1088/0022-3727/38/19/026
Choi SM, Lee KH, Lim CH, Seo WS (2011) Oxide-based thermoelectric power generation module using p-type Ca3Co4O9 and n-type (ZnO)7In2O3 legs. Energy Convers Manag 52:335–339. doi:10.1016/j.enconman.2010.07.005
Feteira A (2009) Negative temperature coefficient resistance (NTCR) ceramic thermistors: an industrial perspective. J Am Ceram Soc 92:967–983. doi:10.1111/j.1551-2916.2009.02990.x
Acknowledgments
AF would like to acknowledge the Higher Education Funding Council for England (HEFCE) the award of a Senior Research Fellowship at Universities of Birmingham and Warwick.
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Feteira, A., Reichmann, K. (2012). Nanoscale Oxide Thermoelectrics. In: Aparicio, M., Jitianu, A., Klein, L. (eds) Sol-Gel Processing for Conventional and Alternative Energy. Advances in Sol-Gel Derived Materials and Technologies. Springer, Boston, MA. https://doi.org/10.1007/978-1-4614-1957-0_15
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