High-temperature Thermoelectric Properties of Cu-substituted Bi2Ba2Co2-xCuxOy Oxides

被引：16

作者：

Hao, Haoshan ^{[1
,2
]}

Yang, Huizhi ^{[1
]}

Liu, Yongtao ^{[2
]}

Hu, Xing ^{[2
]}

机构：

[1] Henan Inst Engn, Dept Math & Phys Sci, Zhengzhou 451191, Peoples R China

[2] Zhengzhou Univ, Minist Educ, Key Lab Mat Phys, Zhengzhou 450052, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2011年 / 27卷 / 06期

关键词：

Bi2Ba2Co2Oy; Cu substitution; Thermoelectric properties; FOR-BI SUBSTITUTION; NACO2O4; MICROSTRUCTURE; CA3CO4O9+DELTA; BI2SR2CO2OY; METALS; COBALT; CO;

D O I：

10.1016/S1005-0302(11)60102-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cu-substituted Bi2Ba2Co2-xCuxOy (0.0 <= x <= 0.4) samples were prepared by conventional solid-state reaction method and the effect of Cu substitution on the microstructure and thermoelectric properties were investigated. The partial substitution of Cu for Co in Bi2Ba2Co2-xCuxOy led to an increase in the electrical conductivity because of an increase in the hole concentration and grain size of sintered bodies. In addition, Cu substitution led to an increase in Seebeck coefficients while kept the thermal conductivity unchanged. The highest thermoelectric figure of merit (ZT value) was obtained in x=0.4 sample and the value was 1.5 times as large as that of Cu-free sample at 873 K.

引用

页码：525 / 528

页数：4

共 23 条

[1] Specific-heat evidence for strong electron correlations in the thermoelectric material (Na,Ca) Co2O4 [J].

Ando, Y ;

Miyamoto, N ;

Segawa, K ;

Kawata, T ;

Terasaki, I .

PHYSICAL REVIEW B, 1999, 60 (15) :10580-10583

[2] Bi2Sr2Co2Oy whiskers with high thermoelectric figure of merit [J].

Funahashi, R ;

Shikano, M .

APPLIED PHYSICS LETTERS, 2002, 81 (08) :1459-1461

[3] EFFECT OF SINTERING TEMPERATURE ON THE MICROSTRUCTURE AND THERMOELECTRIC PROPERTIES OF Ca2.7Bi0.3Co4O9 [J].

Hao, Haoshan ;

Li, Shaofeng ;

Zhao, Limin ;

Hu, Xing .

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2009, 23 (18) :3575-3585

[4]

Hao HS, 2009, J MATER SCI TECHNOL, V25, P105

[5] TEXTURED STRUCTURE AND ANISOTROPIC THERMOELECTRIC PROPERTIES OF Ca2.7Bi0.3Co4O9 OXIDE PREPARED BY CONVENTIONAL SOLID-STATE REACTION [J].

Hao, Haoshan ;

He, Qinglin ;

Chen, Changqing ;

Sun, Hongwei ;

Hu, Xing .

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2009, 23 (01) :87-95

[6] Metallicity and thermopower of the misfit cobaltite [Bi2Ba1.8Co0.2O4]RS[CoO2]2 -: art. no. 045112 [J].

Hervieu, M ;

Maignan, A ;

Michel, C ;

Hardy, V ;

Créon, N ;

Raveau, B .

PHYSICAL REVIEW B, 2003, 67 (04)

[7] Fabrication of textured thermoelectric layered cobaltites with various rock salt-type layers by using β-Co(OH)2 platelets as reactive templates [J].

Itahara, H ;

Xia, CT ;

Sugiyama, J ;

Tani, T .

JOURNAL OF MATERIALS CHEMISTRY, 2004, 14 (01) :61-66

[8] Thermoelectric properties of NaxCo2O4 with rare-earth metals doping prepared by polymerized complex method [J].

Ito, M ;

Nagira, T ;

Hara, S .

JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 408 :1217-1221

[9] Strongly correlated properties of the thermoelectric cobalt oxide Ca3Co4O9 -: art. no. 233108 [J].

Limelette, P ;

Hardy, V ;

Auban-Senzier, P ;

Jérome, D ;

Flahaut, D ;

Hébert, S ;

Frésard, R ;

Simon, C ;

Noudem, J ;

Maignan, A .

PHYSICAL REVIEW B, 2005, 71 (23)

[10] Fabrication and thermoelectric characteristics of [(Bi,Pb)2Ba2O4±w]0.5CoO2 bulks with highly aligned grain structure [J].

Motohashi, T. ;

Nonaka, Y. ;

Sakai, K. ;

Karppinen, M. ;

Yamauchi, H. .

JOURNAL OF APPLIED PHYSICS, 2008, 103 (03)

← 1 2 3 →