The magneto-thermoelectric effect of graphene with intra-valley scattering

Duan, Wenye; Liu, Junfeng; Zhang, Chao; Ma, Zhongshui

doi:10.1088/1674-1056/27/9/097204

Cited by 5 publications

(2 citation statements)

References 68 publications

(116 reference statements)

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“…Another material, Graphene (carbon atoms forming a crystalline two-dimensional material), has attracted considerable interest since its discovery in 2004 because it has many unusual thermoelectric and thermal transport properties [91]. A recent study has reported a thermoelectric figure of merit (ZT) up to 1.4 with graphene and C 60 clusters synthesized by chemical vapor deposition (CVD) [92].…”

Section: New Thermoelectric Materialsmentioning

confidence: 99%

A Review on Thermoelectric Generators: Progress and Applications

Zoui

Bentouba

Stocholm³

et al. 2020

Energies

207

108

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A thermoelectric effect is a physical phenomenon consisting of the direct conversion of heat into electrical energy (Seebeck effect) or inversely from electrical current into heat (Peltier effect) without moving mechanical parts. The low efficiency of thermoelectric devices has limited their applications to certain areas, such as refrigeration, heat recovery, power generation and renewable energy. However, for specific applications like space probes, laboratory equipment and medical applications, where cost and efficiency are not as important as availability, reliability and predictability, thermoelectricity offers noteworthy potential. The challenge of making thermoelectricity a future leader in waste heat recovery and renewable energy is intensified by the integration of nanotechnology. In this review, state-of-the-art thermoelectric generators, applications and recent progress are reported. Fundamental knowledge of the thermoelectric effect, basic laws, and parameters affecting the efficiency of conventional and new thermoelectric materials are discussed. The applications of thermoelectricity are grouped into three main domains. The first group deals with the use of heat emitted from a radioisotope to supply electricity to various devices. In this group, space exploration was the only application for which thermoelectricity was successful. In the second group, a natural heat source could prove useful for producing electricity, but as thermoelectricity is still at an initial phase because of low conversion efficiency, applications are still at laboratory level. The third group is progressing at a high speed, mainly because the investigations are funded by governments and/or car manufacturers, with the final aim of reducing vehicle fuel consumption and ultimately mitigating the effect of greenhouse gas emissions.

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Section: New Thermoelectric Materialsmentioning

confidence: 99%

A Review on Thermoelectric Generators: Progress and Applications

Zoui

Bentouba

Stocholm³

et al. 2020

Energies

207

108

View full text Add to dashboard Cite

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“…Thermoelectric materials directly convert heat into electricity and vice versa due to the Seebeck effect and Peltier effect, and thus they are widely used for power generation in harvesting wasted heat, refrigeration, solar energy harvesting, and carbon reduction. [1][2][3][4][5][6][7][8][9] The thermoelectric devices have unique advantages: they are more compact, robust, and noiseless than the conventional mechanical providers of power generation and refrigeration because the thermoelectric devices are solid state heat engines and have no moving parts. [10][11][12][13] However, thermoelectric materials have a critical weakness of low conversion efficiency which is governed by a dimensionless figure of merit ZT = α 2 σ T /k, where α, σ , and k are the Seebeck coefficient, electric conductivity, and heat conductivity, respectively, T being the absolute temperature.…”

Section: Introductionmentioning

confidence: 99%

Influence of spherical inclusions on effective thermoelectric properties of thermoelectric composite materials

Yan

Zhang

et al. 2020

Chinese Phys. B

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A homogenization theory is developed to predict the influence of spherical inclusions on the effective thermoelectric properties of thermoelectric composite materials based on the general principles of thermodynamics and Mori–Tanaka method. The closed-form solutions of effective Seebeck coefficient, electric conductivity, heat conductivity, and figure of merit for such thermoelectric materials are obtained by solving the nonlinear coupled transport equations of electricity and heat. It is found that the effective figure of merit of thermoelectric material containing spherical inclusions can be higher than that of each constituent in the absence of size effect and interface effect. Some interesting examples of actual thermoelectric composites with spherical inclusions, such as insulated cavities, inclusions subjected to conductive electric and heat exchange and thermoelectric inclusions, are considered, and the numerical results lead to the conclusion that considerable enhancement of the effective figure of merit is achievable by introducing inclusions. In this paper, we provide a theoretical foundation for analytically and computationally treating the thermoelectric composites with more complicated inclusion structures, and thus pointing out a new route to their design and optimization.

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