Sustainability and Circular Economy Perspectives of Materials for Thermoelectric Modules

Castañeda, Manuela; Velásquez, Elkin I. Gutiérrez; Aguilar, C.; Monteiro, Sérgio Neves; Amell, Andrés; Colorado, Henry A.

doi:10.3390/su14105987

Cited by 10 publications

(9 citation statements)

References 74 publications

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“…Our FEM implies the capability of STN + MXene to generate kW-level electricity from MW-level high-grade waste heat. It is reckoned that the performance of TEG can be further improved by assembling [43] La 0.07 Sr 0.93 Ti 0.93 Nb 0.07 O 3 + graphite, [9] Ca 0.95 Sm 0.05 MnO 3 . [45]…”

Section: Discussionmentioning

confidence: 99%

“…b) I – V curve and c) the power output of TEG at different temperatures. d) Comparison of maximum power output obtained in the current work with various n‐type oxide thermoelectric devices reported in the literature, such as TiO 2− x , [ 43 ] La 0.07 Sr 0.93 Ti 0.93 Nb 0.07 O 3 + graphite, [ 9 ] Ca 0.95 Sm 0.05 MnO 3 . [ 45 ]…”

Section: Thermoelectric Propertiesmentioning

confidence: 99%

“…TEG made of these novel composites exhibits twice the power output than that ever reported for the oxide TEGs. [9,[43][44][45][46][47][48]…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Thermoelectric Performance of Rare‐Earth‐Free n‐Type Oxide Perovskite Composite with Graphene Analogous 2D MXene

Dixit

Jana

Maiti

2023

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constituent parameters. Among the available classes of thermoelectric materials, narrow-band gap chalcogenides [4] have shown high ZT. But these metal chalcogenides serve the purpose only in the low-temperature range. For large-scale power generation using high-grade heat, we need a material that is earth-abundant, nontoxic, and physically, chemically, and thermally stable near 1000 °C. From that perspective, oxides are promising candidates for high-temperature thermoelectric power generation. Among the bulk, n-type oxide thermoelectric materials, donor-doped SrTiO 3 (STO) have shown the best thermoelectric performance with ZT = 0.6. [5] However, ZT > 1 is a prerequisite for practical applications, which has been challenging to achieve in doped STO bulk oxides. The reasons behind their poor ZT values are their high thermal conductivity and poor electrical conductivity. It is observed that doping alone cannot improve the transport properties of STO. One must decouple the power factor (S 2 σ) and lattice thermal conductivity (κ L ) to attain high ZT values. Grain boundary engineering [6,7] and nanocompositing [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] are some of the viable routes to enhance both electron transport and induce more phonon scattering in bulk oxides.Incorporating graphite, [8,9] graphene oxide, [10] and graphene [19,22] into the donor (La, Nb)-doped STO matrix have significantly improved the ZT of STO-based bulk oxides. The most profound aspect of ZT enhancement in doped STO systems reported by various researchers is the single-crystal-like [9,19,23] electron mobility attained in these polycrystalline ceramics when they have formed composites with carbon derivatives. However, the reasons behind such huge surge in electron mobility leading to a manifold increase in electrical conductivity are yet to be fully understood. In STO-based composites with 2D graphene, enhanced electron transport is attributed to the reduction of Schottky barrier height in polycrystallinedoped STO. [11,19] However, it is debatable whether reducing the Schottky barrier alone can cause single-crystal-like electron mobility in doped STO-based composites. [23,24] Formation of the Schottky barrier is usual phenomena observed in polycrystalline materials and the presence of 2D graphene along the grain boundaries [11] is expected to facilitate the formation of excess oxygen vacancies enabling the reduction of Schottky barrier height. But that should not be specific to a particular Here, the first experimental demonstration on the effect of incorporating new generation 2D material, MXene, on the thermoelectric performance of rare-earth-free oxide perovskite is reported. The charge localization phenomenon is predominant in the electron transport of doped SrTiO 3 perovskites, which deters from achieving a higher thermoelectric power factor in these oxides. In this work, it is shown that incorporating Ti 3 C 2 T x MXene in a matrix of SrTi 0.85 Nb 0.15 O 3 (STN) facilitates the delocalization of electrons resulting in bet...

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Section: Discussionmentioning

confidence: 99%

Section: Thermoelectric Propertiesmentioning

confidence: 99%

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Enhanced Thermoelectric Performance of Rare‐Earth‐Free n‐Type Oxide Perovskite Composite with Graphene Analogous 2D MXene

Dixit

Jana

Maiti

2023

Small

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“…From a material science point of view, there are multiple approaches to providing solutions to the energy demand, the environmental crisis, and energy waste: rechargeable batteries [6], solar cells [7], piezoelectrics [8], wind energy [9], nuclear energy [10], thermoelectrics [11], and more. Thermoelectric materials, aside from the current limitations of their generated power, show promising potential to decrease waste energy and pollution [12].…”

Section: Introductionmentioning

confidence: 99%

“…As mentioned above, one of the major drawbacks of thermoelectric modules is their high cost/efficiency ratio, which makes it difficult to introduce them to the industries of many countries. Thus, the central focus of current research is to improve the efficiency of the modules through manufacturing processes, or to improve the base material so as to finally introduce the current commercial modules at the industrial level through the union of methods in a hybrid clean power generation process [12].…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Generator Using Low-Cost Thermoelectric Modules for Low-Temperature Waste Heat Recovery

et al. 2023

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One of the most significant problems in industrial processes is the loss of energy according to the sort of heat. Thermoelectrics are a promising alternative to recovering this type of thermal energy, as they can convert heat into electricity, improving the industrial efficiency of the process. This article presents the characteristics of low-cost thermoelectric modules typically used for generation (SP1848-27145SA (TEG-GEN)) and refrigeration (TEC1-12706 (TEC-REF)), both utilized in this research for heat recovery. The modules were evaluated against various configurations, source distances, and distributed systems in order to determine optimal recovery conditions. The experiments were conducted both at the laboratory level and in a large-scale furnace of the traditional ceramics industry, and they revealed that even refrigeration modules are suitable for energy recovery, particularly in developing countries, whereas other generators are more expensive and difficult to obtain. These thermoelectric generators were tested for low-temperature heat recovery in regular furnaces, and the results are to be implemented elsewhere. Results show that even the thermoelectric refrigeration modules can be a solution for heat recovery in many heat sources, which would be particularly strategic for developing countries.

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Recovery and thermoelectric performance optimization of p-type bismuth telluride waste by secondary zone-melting

Fu,

Yu,

Wang

et al. 2024

J Mater Sci: Mater Electron

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Sustainability and Circular Economy Perspectives of Materials for Thermoelectric Modules

Cited by 10 publications

References 74 publications

Enhanced Thermoelectric Performance of Rare‐Earth‐Free n‐Type Oxide Perovskite Composite with Graphene Analogous 2D MXene

Enhanced Thermoelectric Performance of Rare‐Earth‐Free n‐Type Oxide Perovskite Composite with Graphene Analogous 2D MXene

Thermoelectric Generator Using Low-Cost Thermoelectric Modules for Low-Temperature Waste Heat Recovery

Recovery and thermoelectric performance optimization of p-type bismuth telluride waste by secondary zone-melting

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