Thermoelectric ceramics for generators

Noudem, Jacques; Lemonnier, Sébastien; Prevel, M.; Reddy, E. Sudhakar; Guilmeau, Emmanuel; Goupil, Christophe

doi:10.1016/j.jeurceramsoc.2007.05.012

Cited by 72 publications

(44 citation statements)

References 24 publications

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“…[25] Opening of the windows can also be achieved by using a defoaming agent. [33][34][35][36][37][38][39][40][41] An overall adjustment of the coating thickness in combination with a high number of open windows can be realized by centrifugation after the coating process was carried out. [23,25,28,41,43] C) Green-body foams: From solidification of the coating slurry on the template foam a green foam results having a low mechanical stability.…”

Section: Bindermentioning

confidence: 99%

“…water [28] AlN PVA water [29] Bioglass 1 PVA water [30] Ca 2 KNa(PO 4 ) 2 -water [31] Ca 5 (OH)(PO 4 ) 3 Acrylamide water [32] Ca 5 (OH)(PO 4 ) 3 Dextrin water [33] Ca 0.95 Sm 0.05 MnO 3 PVA water [34,35] CeO 2 PVA water [36] LZSA glass Bentonite water [37] LZSA glass Bentonite 2-propanol [38] Mullite/SiC CMC, bentonite water [39] Si 3 N 4 CMC water [25] Y 2 BaCuO 5 PVA water [40] a) Based on polyacrylate.…”

Section: Bindermentioning

confidence: 99%

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Reticulated Replica Ceramic Foams: Processing, Functionalization, and Characterization

et al. 2017

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Reticulated ceramic foams are used in a wide range of applications such as filters, catalyst supports, lightweight materials, energy absorptions materials, or as scaffolds for tissue engineering as the most common ones. Based on gaseous foaming processes of polymers, a stochastic distribution of closed pores is obtained. By reticulation processing thin foam windows are removed between cells turning a closed cell into an open cell structure. These foams are used as template for porous ceramics manufacturing: With different processing approaches, for example, with dip coating of a ceramic slurry and a subsequent (multistep) thermal treatment ceramic reticulate foams are obtained. A variety of material properties strongly depend on the cell and strut size, as well on material composition. Functionalization of ceramic foam surfaces (outer surface functionalization), for example, with zeolites or nanosized aggregates lead to an increase of the specific surface area or provides catalytic or heat storage functionality. Filling of struts (inner surface functionalization) may lead to improved mechanical stability or may provide functionalities such as electric conductivity. The present work summarizes the processing steps from the template foam to the final cellular ceramic, functionalization strategies, and the most common characterization techniques.

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Section: Bindermentioning

confidence: 99%

Section: Bindermentioning

confidence: 99%

Reticulated Replica Ceramic Foams: Processing, Functionalization, and Characterization

et al. 2017

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“…Using thermoelectric materials may provide a possible approach to make better use of energy sources and waste heat. 1,2 Development and commercial application of these materials, however, are limited, because most thermoelectric materials are inefficient and expensive. Numerous studies have been carried out to improve the thermoelectric properties of thermoelectric materials.…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Properties of (Na1−y M y )1.4Co2O4 (M = Sr, Li)

Liu

Jiang

et al. 2011

Journal of Elec Materi

136

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Oxide thermoelectric materials (Na 1Ày M y ) 1.4 Co 2 O 4 (M = Sr, Li; y = 0 to 0.4) were prepared by a sol-gel method. The influence of doping on the thermoelectric properties was investigated, and the phase composition was characterized by x-ray diffraction. Experimental results showed that the main crystalline phase of the undoped and Sr/Li-doped samples was c-Na 1.4 Co 2 O 4 . The thermoelectric properties of Na 1.4 Co 2 O 4 can be improved slightly by doping with Sr. Doping with Li improves the thermoelectric properties of Na 1.4 Co 2 O 4 . For a doping fraction of y = 0.1, the electrical conductivity of (Na 1Ày Li y ) 1.4 Co 2 O 4 at 288 K achieves its maximum value of 301.19 (X mm) À1 . The Seebeck coefficient and power factor of (Na 1Ày Li y ) 1.4 Co 2 O 4 at 288 K achieve their maximum values of 172.28 lV K À1 and 7.44 mW m À1 K À2 at a doping fraction of y = 0.4.

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“…Volumetric solar receivers based on such porous ceramics have been proposed by Fend et al [97]. Noudem et al [98] have proposed the use of thermoelectric Ca 3 Co 4 O 9 and Ca 0.95 Sm 0.05 MnO 3 containing open pores for thermoelectric modules, to take the advantage of their reduced thermal conductivity due to the presence of the small pores ( figure 9). The particularly low thermal conductivity of anisotropic unidirectional porous structures should provide the further advantage of their unique thermal properties [51].…”

Section: Other Propertiesmentioning

confidence: 99%

Porous ceramics mimicking nature—preparation and properties of microstructures with unidirectionally oriented pores

Okada

Isobe

Katsumata

et al. 2011

Science and Technology of Advanced Materials

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Porous ceramics with unidirectionally oriented pores have been prepared by various methods such as anodic oxidation, templating using wood, unidirectional solidification, extrusion, etc. The templating method directly replicates the porous microstructure of wood to prepare porous ceramics, whereas the extrusion method mimics the microstructures of tracheids and xylems in trees. These two methods are therefore the main focus of this review as they provide good examples of the preparation of functional porous ceramics with properties replicating nature. The well-oriented cylindrical through-hole pores prepared by the extrusion method using fibers as the pore formers provide excellent permeability together with high mechanical strength. Examples of applications of these porous ceramics are given, including their excellent capillary lift of over 1 m height which could be used to counteract urban heat island phenomena, and other interesting properties arising from anisotropic unidirectional porous structures.

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Thermoelectric ceramics for generators

Cited by 72 publications

References 24 publications

Reticulated Replica Ceramic Foams: Processing, Functionalization, and Characterization

Reticulated Replica Ceramic Foams: Processing, Functionalization, and Characterization

Thermoelectric Properties of (Na1−y M y )1.4Co2O4 (M = Sr, Li)

Porous ceramics mimicking nature—preparation and properties of microstructures with unidirectionally oriented pores

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