High-pressure synthesis of phonon-glass electron-crystal featured thermoelectric LixCo4Sb12

Zhang, Jianjun; Xu, Bin; Wang, Limin; Yang, Junjiao; Yu, Fengrong; Liu, Zhongyuan; He, Julong; Wen, Bin; Tian, Yongjun

doi:10.1016/j.actamat.2011.10.059

Cited by 78 publications

(51 citation statements)

References 29 publications

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“…Obviously, κ of Li/Ca double-filled samples are further suppressed compared with those single-elemental filled samples, and κ L shows a decreasing trend with increasing filling fraction. 19,22 It seems Li/Ca co-filling can reduce κ L more effectively, consistent with the result from multiple-filled CoSb 3 skutterudites. 6 Figure 3 shows the temperature dependent dimensionless figure of merit for Li 12 , which was attributed to its very large power factor (>6000 µWm -1 K -2 ).…”

Section: Resultssupporting

confidence: 75%

“…6 Figure 3 shows the temperature dependent dimensionless figure of merit for Li 12 , which was attributed to its very large power factor (>6000 µWm -1 K -2 ). 19 Our work indicates high pressure synthesis is effective in producing multiple elemental filled CoSb 3 skutterudites. Further thermoelectric performance enhancement of Li/Ca co-filled CoSb 3 is possible through increasing the total filling fraction as well as optimizing Li:Ca ratio.…”

Section: Resultsmentioning

confidence: 76%

“…15 High pressure can lower the reaction temperature and facilitate the reaction by shifting reaction equilibrium. 16 Previous works demonstrated the successful syntheses of single elemental filled CoSb 3 under high pressure, with the advantages of rapid production, broadening fillable elements, [17][18][19][20] and increasing the filling fraction limit. 21,22 Still, studies of the multiple elemental filling strategy implemented under high pressure are rare.…”

Section: Introductionmentioning

confidence: 99%

“…25 Both limits are overcome under high pressure. 19,22 In addition, the Einstein temperature associated with the localized rattling mode of filling atoms is 42 K for Li,19 and 85 K for Ca. 22 The co-filling of these two elements in CoSb 3 may contribute to achieve broadspectrum phonon scattering.…”

Section: Introductionmentioning

confidence: 99%

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Thermoelectric properties of high pressure synthesized lithium and calcium double-filled CoSb3

Kang

Chen

et al. 2017

AIP Advances

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Lithium and calcium are inefficient filling elements of CoSb3 at ambient pressure, but show nice filling behavior under high pressure. In this work, we synthesized Li/Ca double-filled CoSb3 with high pressure synthesis method. The products show the skutterudite structure of Im3¯ symmetry. Thermoelectric properties were effectively enhanced through Li and Ca co-filling. For the optimal Li0.08Ca0.18Co4Sb12 sample, the power factor maintains a relatively high value over the whole measurement temperature range and peaks at 4700μWm−1K−2, meanwhile the lattice thermal conductivity is greatly suppressed, leading to a maximal ZT of 1.18 at 700 K. Current work demonstrates high pressure synthesis as an effective method to produce multiple elemental filled CoSb3 skutterudites.

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Section: Resultssupporting

confidence: 75%

Section: Resultsmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Thermoelectric properties of high pressure synthesized lithium and calcium double-filled CoSb3

Kang

Chen

et al. 2017

AIP Advances

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“…High pressure has been widely applied to materials synthesis, with demonstrated effectiveness in thermoelectric materials synthesis and performance optimization [29][30][31][32][33]. High pressure can initiate significant changes in the reaction equilibrium, lower the reaction temperature, and facilitate the reaction [34,35].…”

Section: Introductionmentioning

confidence: 99%

Enhanced thermoelectric performance of Na-doped PbTe synthesized under high pressure

Cai

Sun

et al. 2018

Sci. China Mater.

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Interstitials in Thermoelectrics

Xu,

Yin,

Xiao

et al. 2024

Advanced Materials

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Defect structure is pivotal in advancing thermoelectric performance with interstitials being widely recognized for their remarkable roles in optimizing both phonon and electron transport properties. Diverse interstitial atoms have been identified in previous works according to their distinct roles and can be classified into rattling interstitial, decoupling interstitial, interlayer interstitial, dynamic interstitial and liquid interstitial. Specifically, rattling interstitial can cause phonon resonance in cage compound to scatter phonon transport; decoupling interstitial can contribute to phonon blocking and electron transport due to their significantly different mean free paths; interlayer interstitial can facilitate out‐of‐layer electron transport in layered compounds; dynamic interstitial can tune temperature‐dependent carrier density and optimize electrical transport properties at wide temperatures; liquid interstitial could improve the carrier mobility at homogeneous dispersion state. All of these interstitials have positive impact on thermoelectric performance by adjusting transport parameters. This perspective therefore intends to provide a thorough overview of advances in interstitial strategy and highlight their significance for optimizing thermoelectric parameters. Finally, the profound potential for extending interstitial strategy to various other thermoelectric systems is discussed and some future directions in thermoelectric material are also outlined.This article is protected by copyright. All rights reserved

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High-pressure synthesis of phonon-glass electron-crystal featured thermoelectric LixCo4Sb12

Cited by 78 publications

References 29 publications

Thermoelectric properties of high pressure synthesized lithium and calcium double-filled CoSb3

Thermoelectric properties of high pressure synthesized lithium and calcium double-filled CoSb3

Enhanced thermoelectric performance of Na-doped PbTe synthesized under high pressure

Interstitials in Thermoelectrics

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