Promising zintl-phase thermoelectric compound SrAgSb

Weiming Zhang; Chen Chen; Honghao Yao; Wenhua Xue; Shan Li; Fengxian Bai; Yifang Huang; Xiaofang Li; Xi Lin; Feng Cao; Jiehe Sui; Shufang Wang; Bo Yu; Yumei Wang; Xingjun Liu; Qian Zhang

doi:10.1021/acs.chemmater.0c02317

Promising zintl-phase thermoelectric compound SrAgSb

Weiming Zhang, Chen Chen, Honghao Yao, Wenhua Xue, Shan Li, Fengxian Bai, Yifang Huang, Xiaofang Li, Xi Lin, Feng Cao, Jiehe Sui, Shufang Wang, Bo Yu, Yumei Wang, Xingjun Liu, Qian Zhang

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

Zintl-phase thermoelectric materials have garnered a lot of attention because of their intrinsic electron-crystal and phonon-glass structures. In this work, a series of ZrBeSi-type Zintl-phase compounds (SrAgSb, EuAgSb, and EuCuSb) were prepared, and their band structures and thermoelectric properties were investigated. The peak ZTs of SrAgSb, EuAgSb, and EuCuSb reach ∼0.5, ∼0.35, and ∼0.3 at 773 K. The carrier concentration of SrxAgSb was subsequently optimized by Sr self-doping. The increased Sr content suppresses the intrinsic hole concentration and leads to decreased total thermal conductivity. Together with the comparable power factor, a peak ZT of ∼0.6 was achieved at 773 K for Sr1.01AgSb and Sr1.02AgSb. The discovery of these ZrBeSi-type Zintl-phase thermoelectric materials provides a new family for exploring higher ZT.

Original language	English
Pages (from-to)	6983-6989
Number of pages	7
Journal	Chemistry of Materials
Volume	32
Issue number	16
DOIs	https://doi.org/10.1021/acs.chemmater.0c02317
State	Published - 25 Aug 2020
Externally published	Yes

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title = "Promising zintl-phase thermoelectric compound SrAgSb",

abstract = "Zintl-phase thermoelectric materials have garnered a lot of attention because of their intrinsic electron-crystal and phonon-glass structures. In this work, a series of ZrBeSi-type Zintl-phase compounds (SrAgSb, EuAgSb, and EuCuSb) were prepared, and their band structures and thermoelectric properties were investigated. The peak ZTs of SrAgSb, EuAgSb, and EuCuSb reach ∼0.5, ∼0.35, and ∼0.3 at 773 K. The carrier concentration of SrxAgSb was subsequently optimized by Sr self-doping. The increased Sr content suppresses the intrinsic hole concentration and leads to decreased total thermal conductivity. Together with the comparable power factor, a peak ZT of ∼0.6 was achieved at 773 K for Sr1.01AgSb and Sr1.02AgSb. The discovery of these ZrBeSi-type Zintl-phase thermoelectric materials provides a new family for exploring higher ZT.",

author = "Weiming Zhang and Chen Chen and Honghao Yao and Wenhua Xue and Shan Li and Fengxian Bai and Yifang Huang and Xiaofang Li and Xi Lin and Feng Cao and Jiehe Sui and Shufang Wang and Bo Yu and Yumei Wang and Xingjun Liu and Qian Zhang",

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doi = "10.1021/acs.chemmater.0c02317",

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T1 - Promising zintl-phase thermoelectric compound SrAgSb

AU - Zhang, Weiming

AU - Chen, Chen

AU - Yao, Honghao

AU - Xue, Wenhua

AU - Li, Shan

AU - Bai, Fengxian

AU - Huang, Yifang

AU - Li, Xiaofang

AU - Lin, Xi

AU - Cao, Feng

AU - Sui, Jiehe

AU - Wang, Shufang

AU - Yu, Bo

AU - Wang, Yumei

AU - Liu, Xingjun

AU - Zhang, Qian

PY - 2020/8/25

Y1 - 2020/8/25

N2 - Zintl-phase thermoelectric materials have garnered a lot of attention because of their intrinsic electron-crystal and phonon-glass structures. In this work, a series of ZrBeSi-type Zintl-phase compounds (SrAgSb, EuAgSb, and EuCuSb) were prepared, and their band structures and thermoelectric properties were investigated. The peak ZTs of SrAgSb, EuAgSb, and EuCuSb reach ∼0.5, ∼0.35, and ∼0.3 at 773 K. The carrier concentration of SrxAgSb was subsequently optimized by Sr self-doping. The increased Sr content suppresses the intrinsic hole concentration and leads to decreased total thermal conductivity. Together with the comparable power factor, a peak ZT of ∼0.6 was achieved at 773 K for Sr1.01AgSb and Sr1.02AgSb. The discovery of these ZrBeSi-type Zintl-phase thermoelectric materials provides a new family for exploring higher ZT.

AB - Zintl-phase thermoelectric materials have garnered a lot of attention because of their intrinsic electron-crystal and phonon-glass structures. In this work, a series of ZrBeSi-type Zintl-phase compounds (SrAgSb, EuAgSb, and EuCuSb) were prepared, and their band structures and thermoelectric properties were investigated. The peak ZTs of SrAgSb, EuAgSb, and EuCuSb reach ∼0.5, ∼0.35, and ∼0.3 at 773 K. The carrier concentration of SrxAgSb was subsequently optimized by Sr self-doping. The increased Sr content suppresses the intrinsic hole concentration and leads to decreased total thermal conductivity. Together with the comparable power factor, a peak ZT of ∼0.6 was achieved at 773 K for Sr1.01AgSb and Sr1.02AgSb. The discovery of these ZrBeSi-type Zintl-phase thermoelectric materials provides a new family for exploring higher ZT.

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U2 - 10.1021/acs.chemmater.0c02317

DO - 10.1021/acs.chemmater.0c02317

M3 - 文章

AN - SCOPUS:85092053800

SN - 0897-4756

VL - 32

SP - 6983

EP - 6989

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 16

ER -

Promising zintl-phase thermoelectric compound SrAgSb

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