Thermoelectric Devices for Power Generation: Recent Progress and Future Challenges

Zhang, Qihao; Xiang, Huang; Bai, Sheng Qiang; Shi, Xun; Uher, Ctirad; Chen, Lidong

doi:10.1002/adem.201500333

Cited by 340 publications

(204 citation statements)

References 99 publications

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“…Bi 2−x Sb x Te 3−y Se y alloys are the most widely used TE material, especially for refrigeration. [100] Owing to its practicability and commercial prospect, many studies have been done on this system. The crystal structure of Bi 2 Te 3 can be given in a hexagonal unit cell.…”

Section: The Bi 2 Te 3 -Based Systemmentioning

confidence: 99%

“…The 2D structure of BiCuSeO was directly observed by high resolution transmission electron micro scopy (HRTEM). [13] As the layers are stacked along the c axis, the lattice image along the [001] zone axis shows homogenous contrast, and the lattice image along the [100] zone axis exhibits a six period layered structure. From the superconductive mecha nism in LaFeAsO, these analogs possess both insulting and con ductive layers.…”

Section: Bicuseomentioning

confidence: 99%

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Promising Thermoelectric Bulk Materials with 2D Structures

2017

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Given that more than two thirds of all energy is lost, mostly as waste heat, in utilization processes worldwide, thermoelectric materials, which can directly convert waste heat to electricity, provide an alternative option for optimizing energy utilization processes. After the prediction that superlattices may show high thermoelectric performance, various methods based on quantum effects and superlattice theory have been adopted to analyze bulk materials, leading to the rapid development of thermoelectric materials. Bulk materials with two‐dimensional (2D) structures show outstanding properties, and their high performance originates from both their low thermal conductivity and high Seebeck coefficient due to their strong anisotropic features. Here, the advantages of superlattices for enhancing the thermoelectric performance, the transport mechanism in bulk materials with 2D structures, and optimization methods are discussed. The phenomenological transport mechanism in these materials indicates that thermal conductivities are reduced in 2D materials with intrinsically short mean free paths. Recent progress in the transport mechanisms of Bi2Te3‐, SnSe‐, and BiCuSeO‐based systems is summarized. Finally, possible research directions to enhance the thermoelectric performance of bulk materials with 2D structures are briefly considered.

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Section: The Bi 2 Te 3 -Based Systemmentioning

confidence: 99%

Section: Bicuseomentioning

confidence: 99%

Promising Thermoelectric Bulk Materials with 2D Structures

2017

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“…[77][78][79] Meanwhile, huge efforts have been made to promote the TE materials in commercial applications. [16,18] Indeed, in recent years, the development of nontoxic, low-cost [80,81] TE materials has been considered as key for future commercial applications, so that many promising TE materials have been explored due to their nontoxicity and earth abundancy, such as Cu-based materials including Cu 2 CdSnSe 4 , [80] Cu 2 ZnGeSe 4 , [81] Cu 12 Sb 4 S 13 , [82] BiCuSeO, [83] and lead-free SnTe. [84] Such promising progress has drawn multidisciplinary attention into the TE field and boosts the global TE market.…”

Section: Introductionmentioning

confidence: 99%

High Performance Thermoelectric Materials: Progress and Their Applications

Yang

Chen

Dargusch

et al. 2017

Advanced Energy Materials

626

434

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Thermoelectric (TE) materials have the capability of converting heat into electricity, which can improve fuel efficiency, as well as providing robust alternative energy supply in multiple applications by collecting wasted heat, and therefore, assisting in finding new energy solutions. In order to construct high performance TE devices, superior TE materials have to be targeted via various strategies. The development of high performance TE devices can broaden the market of TE application and eventually boost the enthusiasm of TE material research. This review focuses on major novel strategies to achieve high‐performance TE materials and their applications. Manipulating the carrier concentration and band structures of materials are effective in optimizing the electrical transport properties, while nanostructure engineering and defect engineering can greatly reduce the thermal conductivity approaching the amorphous limit. Currently, TE devices are utilized to generate power in remote missions, solar–thermal systems, implantable or/wearable devices, the automotive industry, and many other fields; they are also serving as temperature sensors and controllers or even gas sensors. The future tendency is to synergistically optimize and integrate all the effective factors to further improve the TE performance, so that highly efficient TE materials and devices can be more beneficial to daily lives.

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“…Thermoelectric (TE) technologies for alternative and complementary power generators or refrigerators are heavily reliant upon the efficiency of converting heat to electricity [1,2]. The critical factor for assessing the efficiency is the dimensionless figure of merit defined as ZT = S 2 σT/(κ electron + κ lattice ), where S is the Seebeck coefficient, σ is the electrical conductivity, κ electron and κ lattice are the electronic and lattice contributions to the thermal conductivity, and T is the absolute temperature, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…According to the model prediction of lattice thermal conductivity, an effective scattering process for heat-carrying phonons resulted from the point defects, dislocations of secondary NiSb 2 and CuS phases at mid-and high-frequency phonons. A high and reversible TE property for Cu 12 …”

Section: Introductionmentioning

confidence: 99%

Enhanced thermoelectric performance of Cu12Sb4S13−δ tetrahedrite via nickel doping

et al. 2018

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, accompanied with an enhanced thermoelectric power factor. The model predicted that the reduced lattice thermal conductivity is attributed to mid-frequency phonon scattering, caused by precipitates and dislocations resulting from Ni doping. Consequently, a high ZT value up to 0.95 at 723 K was achieved for Cu 11 NiSb 4 S 13−δ , corresponding to a~46% increase over non-doped Cu 12 Sb 4 S 13−δ . Furthermore, the cyclic measurement showed that the Ni-doped tetrahedrites displayed high chemical stability.

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Thermoelectric Devices for Power Generation: Recent Progress and Future Challenges

Cited by 340 publications

References 99 publications

Promising Thermoelectric Bulk Materials with 2D Structures

Promising Thermoelectric Bulk Materials with 2D Structures

High Performance Thermoelectric Materials: Progress and Their Applications

Enhanced thermoelectric performance of Cu12Sb4S13−δ tetrahedrite via nickel doping

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