Properties of Ag-doped Bi-Sb alloys as thermoelectric conversion materials for solid state refrigeration

doi:10.1007/s11708-009-0005-1

Front Energ Power Eng Chin

2009, Vol. 3

Issue (1) : 90-93 https://doi.org/10.1007/s11708-009-0005-1

RESEARCH ARTICLE

Properties of Ag-doped Bi-Sb alloys as thermoelectric conversion materials for solid state refrigeration

Wen XU¹, Laifeng LI¹(email.png), Rongjin HUANG¹, Min ZHOU¹, Liyun ZHENG¹, Linghui GONG¹, Chunmei SONG²

1. 1. Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China; 2. 2. Department of Physics, Zunyi Normal College, Zunyi 563002, China

Download: PDF(170 KB) HTML
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks

Abstract

The energy conversion properties of Bi-Sb system thermoelectric materials doped by Ag was investigated. Bi₈₅Sb_15-_xAg_x (x=0, 1, 2, 3, 4) alloys with Ag substitution for Sb were synthesized by mechanical alloying and then pressed under 5 GPa at 523 K for 30 min. The phase structure of the alloys was characterized by X-ray diffraction. The electric conductivities and the seebeck coefficients were measured at the temperature range of 80-300 K. The results reveal that the electric conductivities of the Ag-doped Bi-Sb alloys are highly improved. The power factor of Bi₈₅Sb₁₄Ag₁ reaches a maximum value of 2.98×10^-3 W/(K²?m) at 255 K, which is about three times that of the un-doped sample Bi₈₅Sb₁₅ at the same temperature.

Keywords thermoelectric conversion materials high-pressure sintering thermoelectric properties

Corresponding Author(s): LI Laifeng,Email:lfli@mail.ipc.ac.cn

Issue Date: 05 March 2009

Cite this article:

Wen XU,Laifeng LI,Rongjin HUANG, et al. Properties of Ag-doped Bi-Sb alloys as thermoelectric conversion materials for solid state refrigeration[J]. Front Energ Power Eng Chin, 2009, 3(1): 90-93.

URL:

https://academic.hep.com.cn/fie/EN/10.1007/s11708-009-0005-1
https://academic.hep.com.cn/fie/EN/Y2009/V3/I1/90

Fig.1 Block diagram of cubic-anvil high-pressure apparatus

Fig.2 XRD patterns of BiSbAg alloys
(a) =0; (b) =1; (c) =2; (d) =3; (e) =4

Fig.3 SEM micrographs of BiSbAg alloys
(a) =0; (b) =1; (c) =4

Fig.4 Electrical conductivities as a function of temperature

Fig.5 Seebeck coefficients as function of temperature

Fig.6 Power factor as function of temperature

1	Littleton R T, Tritt T M, Kolis J W, . Transition-metal pentatellurides as potential low-temperature thermoelectric refrigeration materials. Phys Rev B , 1999, 60(19): 13453 doi: 10.1103/PhysRevB.60.13453
	Littleton R T, Tritt T M, Kolis J W, et al. Transition-metalpentatellurides as potential low-temperature thermoelectric refrigerationmaterials. Phys Rev B, 1999, 60(19): 13453 doi: 10.1103/PhysRevB.60.13453
2	Yim W M, Amith A. Bi-Sb alloys for magneto-thermoelectric and thermomagnetic cooling. Solid-State Electron , 1972, 15(10): 1141-1165 doi: 10.1016/0038-1101(72)90173-6
	Yim W M, Amith A. Bi-Sballoys for magneto-thermoelectric and thermomagnetic cooling. Solid-State Electron, 1972, 15(10): 1141―1165 doi: 10.1016/0038-1101(72)90173-6
3	Hansen M, Anderko K. Constitution of Binary Alloys. New York: McGraw Hill Book Company, 1958, 332-334
	Hansen M, Anderko K. Constitution of Binary Alloys. New York: McGraw Hill Book Company, 1958, 332―334
4	Chao P W, Chu H T, Kao Y H. Nonlinear band-parameter variations in dilute bismuth-antimony alloys. Phys Rev B , 1974, 9(10): 4030-4035 doi: 10.1103/PhysRevB.9.4030
	Chao P W, Chu H T, Kao Y H. Nonlinear band-parametervariations in dilute bismuth-antimony alloys. Phys Rev B, 1974, 9(10): 4030―4035 doi: 10.1103/PhysRevB.9.4030
5	Chandra Shekar N V, Polvani D A, Meng J F,. Improved thermoelectric properties due to electronic topological transition under high pressure. Physica B , 2005, 358(1-4): 14-18 doi: 10.1016/j.physb.2004.12.020
	Chandra Shekar N V, Polvani D A, Meng J F,et al. Improvedthermoelectric properties due to electronic topological transitionunder high pressure. Physica B, 2005, 358(1―4): 14―18 doi: 10.1016/j.physb.2004.12.020
6	Polvani D A, Meng J F,Chandra Shekar N V, . Large improvement in thermoelectric properties in pressure-tuned p-Type Sb1.5Bi0.5Te3. Chem Mater , 2001, 13(6): 2068-2071 doi: 10.1021/cm000888q
	Polvani D A, Meng J F,Chandra Shekar NV, et al. Largeimprovement in thermoelectric properties in pressure-tuned p-TypeSb1.5Bi0.5Te3. Chem Mater, 2001, 13(6): 2068―2071 doi: 10.1021/cm000888q
7	Liu Huangjun, Song Chunmei, Wu Songtao,. Processing method dependency of thermoelectric properties of Bi85Sb15 alloys in low temperature. Cryogenics , 2007, 47(1): 56-60 doi: 10.1016/j.cryogenics.2006.09.007
	Liu Huangjun, Song Chunmei, Wu Songtao,et al. Processing method dependency of thermoelectric properties of Bi85Sb15 alloys in low temperature. Cryogenics, 2007, 47(1): 56―60 doi: 10.1016/j.cryogenics.2006.09.007
8	Rowe D M. CRC Handbook of Thermoelectrics. New York: CRC Press, 1995, 157-180
	Rowe D M. CRC Handbook of Thermoelectrics. NewYork: CRC Press, 1995, 157―180
9	Uemura K, Nishida I. Thermoelectric Semiconductors and Their Applications. Tokyo: Nikkan-Kogyo Shinbun Press, 1988, 145
	Uemura K, Nishida I. Thermoelectric Semiconductorsand Their Applications. Tokyo: Nikkan-Kogyo Shinbun Press, 1988, 145

Viewed

Full text

Abstract

Cited

Shared

Discussed