High Thermoelectric Performance in Electron-Doped AgBi<sub>3</sub>S<sub>5</sub> with Ultralow Thermal Conductivity

Tan, Gangjian; Hao, Shiqiang; Zhao, Jing; Wolverton, Chris; Kanatzidis, Mercouri G.

doi:10.1021/jacs.7b02399

Cited by 172 publications

(190 citation statements)

References 52 publications

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“…This high N v can also be hinted from the extremely high Seebeck coefficient (S = À400 mVK À1 at 313 K ( Figure 3c)w ith n H = 4.0 10 18 cm À3 (Figure 3b)) of our nano Bi 13 S 18 I 2 + 2% BiCl 3 sample as compared to those of other metal sulfide compounds (À330 mVK À1 of Bi 2 S 3 [20] and À206 mVK À1 of PbS [18] )w ith the same carrier concentration and similar effective mass. [21] Although our nano Bi 13 S 18 I 2 + 2% BiCl 3 sample had not been optimized in terms of carrier concentration, its peak power factor (0.59 mW m À1 K À2 at 788 K) is comparable to those of the reported metal sulfide thermoelectric compounds (0.70 mW m À1 K À2 for AgBi 3 S 5 [22] )a nd exceeds that of the optimized Bi 2 S 3 materials (0.47 mW m À1 K À2 ). [21] These features would also favor ah igh power factor,asS 2 s is proportional to N v and inversely proportional to m*atacertain carrier concentration.…”

Section: Angewandte Chemiementioning

confidence: 97%

Manipulating Band Structure through Reconstruction of Binary Metal Sulfide for High‐Performance Thermoelectrics in Solution‐Synthesized Nanostructured Bi₁₃S₁₈I₂

Feng

Agne

et al. 2018

Angewandte Chemie

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Reconstructing canonical binary compounds by inserting athirdagent can significantly modify their electronic and phonon structures.T herefore,i th as inspired the semiconductor communities in various fields.I ntroducing this paradigm will potentially revolutionizethermoelectrics as well. Using as olution synthesis,B i 2 S 3 was rebuilt by adding disordered Bi and weakly bonded I. These new structural motifs and the altered crystal symmetry induce prominent changes in electrical and thermal transport, resulting in agreat enhancement of the figure of merit. The as-obtained nanostructured Bi 13 S 18 I 2 is the first non-toxic,c ost-efficient, and solution-processable n-type material with zT= 1.0.

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Section: Angewandte Chemiementioning

confidence: 97%

Manipulating Band Structure through Reconstruction of Binary Metal Sulfide for High‐Performance Thermoelectrics in Solution‐Synthesized Nanostructured Bi₁₃S₁₈I₂

Feng

Agne

et al. 2018

Angewandte Chemie

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“…Indeed, as shown in Figure 6, transport properties of pure SnS and Na 0.02 Sn 0.98 S crystals displayed a strongly anisotropic character, with the electrical resistivity along the a-axis being much higher than that along the b-axis and the c-axis. Of all the single crystalline SnS samples, the maximum [34,38,39,[42][43][44][45][46][47] in the temperatures range from ≈300 to ≈900 K. The detail methods [48] are displayed in the Supporting Information. Additionally, the thermal conductivity along the a-axis for both SnS and Na 0.02 Sn 0.98 S crystals was lower than the conductivity along the b-axis and the c-axis.…”

mentioning

confidence: 99%

Sodium‐Doped Tin Sulfide Single Crystal: A Nontoxic Earth‐Abundant Material with High Thermoelectric Performance

Wang

et al. 2018

Advanced Energy Materials

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the total thermal conductivity consisting of the lattice part (κ L ) and the electronic part (κ e ). [6] Some of these parameters (S, ρ, and κ e ), however, are mutually interdependent and strongly coupled by way of the carrier concentration, making it difficult to attain high TE performance (zT) without making some compromise. Fortunately, in the past decade, several general strategies have been developed to achieve high zT in various materials. [7,8] Lowering the lattice thermal conductivity (κ L ), which is relatively independent of other parameters, is a comparatively easy method. Other well-documented methods for enhancing phonon scattering include nanostructuring, [9][10][11] dislocations, [12,13] point defects, [14][15][16][17] and strong lattice anharmonicity. [18][19][20] Additional strategies to boost the power factor (S 2 ρ −1 ) include carrier concentration optimization, [21,22] band convergence, [23,24] and creating band resonance levels. [25] Typically, practical TE materials are polycrystalline structures with grain boundaries that help to maintain a low lattice thermal conductivity but inevitably also degrade the charge carrier mobility. Recently, bulk SnSe [26][27][28][29][30] and In 4 Se 3[31] single crystals have attracted increasing amounts of attention. The layered structure and strong lattice anharmonicity of these materials cause ultralow lattice thermal conductivity, independent of grain boundary phonon scattering. Therefore, such single crystalline compounds are expected to yield superior performance as both high mobility and low lattice thermal conductivity can be maintained simultaneously. For instance, the ultrahigh zT of Lead-free tin sulfide (SnS), with an analogous structure to SnSe, has attracted increasing attention because of its theoretically predicted high thermoelectric performance. In practice, however, polycrystalline SnS performs rather poorly as a result of its low power factor. In this work, bulk sodium (Na)-doped SnS single crystals are synthesized using a modified Bridgman method and a detailed transport evaluation is conducted. The highest zT value of ≈1.1 is reached at 870 K in a 2 at% Na-doped SnS single crystal along the b-axis direction, in which high power factors (2.0 mW m −1 K −2 at room temperature) are realized. These high power factors are attributed to the high mobility associated with the single crystalline nature of the samples as well as to the enhanced carrier concentration achieved through Na doping. An effective single parabolic band model coupled with first-principles calculations is used to provide theoretical insight into the electronic transport properties. This work demonstrates that SnS-based single crystals composed of earth-abundant, low-cost, and nontoxic chemical elements can exhibit high thermoelectric performance and thus hold potential for application in the area of waste heat recovery.

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“…Thermoelectric (TE) materials have attracted considerable attention owing to their capabilities of directly converting heat to electrical energy 1, 2, 3, 4. In general, TE performance can be estimated via the dimensionless figure of merit ZT = S 2 σT /κ tot , where S , σ, T , and κ tot are the Seebeck coefficient, electrical conductivity, absolute temperature, and total thermal conductivity, respectively 5, 6, 7, 8.…”

mentioning

confidence: 99%

MnS Incorporation into Higher Manganese Silicide Yields a Green Thermoelectric Composite with High Performance/Price Ratio

Dong

Sun

et al. 2018

Advanced Science

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Thermoelectric materials that can directly convert heat to electrical energy offer a viable solution for reducing the usage of fossil energy by harvesting waste heat resources. Higher manganese silicide (HMS) is a naturally abundant, eco‐friendly, and low‐cost p‐type thermoelectric semiconductor with high power factor (PF); however, its figure of merit (ZT) is limited by intrinsically high thermal conductivity (κ). For effectively enhancing the thermoelectric performance of HMS and avoiding the use of expensive or toxic elements, such as Re, Te, or Pb, a green p‐type MnS with high Seebeck coefficient (S) and low κ is incorporated into the HMS matrix to form MnS/HMS composites. The incorporation of MnS leads to a 31% reduction of κ and a 10% increase of S. The ZT value increases by ≈48% from 0.40 to 0.59 at 823 K. Correspondingly, performance/price ratio is first proposed to evaluate the practical value of thermoelectric materials, which is higher than those of the vast majority of current thermoelectric materials. This study provides an overview of enhancing ZT of HMS and reducing costs, which may also be applicable to other thermoelectric materials.

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High Thermoelectric Performance in Electron-Doped AgBi₃S₅ with Ultralow Thermal Conductivity

Cited by 172 publications

References 52 publications

Manipulating Band Structure through Reconstruction of Binary Metal Sulfide for High‐Performance Thermoelectrics in Solution‐Synthesized Nanostructured Bi₁₃S₁₈I₂

Manipulating Band Structure through Reconstruction of Binary Metal Sulfide for High‐Performance Thermoelectrics in Solution‐Synthesized Nanostructured Bi₁₃S₁₈I₂

Sodium‐Doped Tin Sulfide Single Crystal: A Nontoxic Earth‐Abundant Material with High Thermoelectric Performance

MnS Incorporation into Higher Manganese Silicide Yields a Green Thermoelectric Composite with High Performance/Price Ratio

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High Thermoelectric Performance in Electron-Doped AgBi3S5 with Ultralow Thermal Conductivity

Cited by 172 publications

References 52 publications

Manipulating Band Structure through Reconstruction of Binary Metal Sulfide for High‐Performance Thermoelectrics in Solution‐Synthesized Nanostructured Bi13S18I2

Manipulating Band Structure through Reconstruction of Binary Metal Sulfide for High‐Performance Thermoelectrics in Solution‐Synthesized Nanostructured Bi13S18I2

Sodium‐Doped Tin Sulfide Single Crystal: A Nontoxic Earth‐Abundant Material with High Thermoelectric Performance

MnS Incorporation into Higher Manganese Silicide Yields a Green Thermoelectric Composite with High Performance/Price Ratio

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High Thermoelectric Performance in Electron-Doped AgBi₃S₅ with Ultralow Thermal Conductivity

Manipulating Band Structure through Reconstruction of Binary Metal Sulfide for High‐Performance Thermoelectrics in Solution‐Synthesized Nanostructured Bi₁₃S₁₈I₂

Manipulating Band Structure through Reconstruction of Binary Metal Sulfide for High‐Performance Thermoelectrics in Solution‐Synthesized Nanostructured Bi₁₃S₁₈I₂