Effect of high valence metal doping on thermoelectric properties of [Ca2CoO3-δ]0.62CoO2

被引：0

作者：

Fujie, K ^{[1
]}

Horii, S ^{[1
]}

Matsubara, I ^{[1
]}

Shin, W ^{[1
]}

Murayama, N ^{[1
]}

Shimoyama, J ^{[1
]}

Kishio, K ^{[1
]}

机构：

[1] Univ Tokyo, Dept Superconduct, Tokyo 1138656, Japan

来源：

THERMOELECTRIC MATERIALS 2003-RESEARCH AND APPLICATIONS | 2004年 / 793卷

关键词：

D O I：

暂无

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report the synthesis and thermoelectric properties of high valence metal-doped [Ca2Co1-xMxO3-delta](0.62)CoO2 (M = Re, Mo or Nb) compounds. Approximately 10% M-doping for Co sites in block layer was found to be effective for dramatic suppression of oxygen nonstoichiometries. Seebeck coefficients were systematically enhanced with M-doping levels (x), and however, electrical resistivities also increased with x for conventionally sintered bulk samples. On the other hand, magnetic alignment and/or densification were remarkably effective for reduction of the resistivity. In the case of Mo-doped (x = 0.1) sample, a highly c-axis aligned and densified sample showed 1-3 times larger power factor at 1100 K (5.3 muWK(-2)cm(-1)) than the non-doped one. Moreover, these high valence metal doped Ca349 compounds exhibited the oxygen nonstoichiometry suppressed dramatically.

引用

页码：317 / 322

页数：6

共 50 条

[1] Enhanced thermoelectric properties of [Ca2CoO3-δ]0.62CoO2 polycrystalline bulk by control of microstructure and oxygen content
Sano, M
Horii, S
Matsubara, I
Funahashi, R
Shikano, M
Otzschi, K
Shimoyama, J
Kishio, K
SOLID-STATE CHEMISTRY OF INORGANIC MATERIALS IV, 2003, 755 : 369 - 374
[2] Effect of Co content on [Ca2CoO3-δ]0.62[CoO2] thermoelectric properties
Li, Ya-nan
Wu, Ping
Zhang, Shi-ping
Yang, Jin-guang
Yan, Dan
Huai, Xiu-lan
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2020, 31 (07) : 5353 - 5359
[3] Thermoelectric properties of Pb doped [Ca2CoO3.1]0.62CoO2
Nakatsugawa, H.
Jeong, H. M.
Kim, R. H.
Gomi, N.
ICT'06: XXV INTERNATIONAL CONFERENCE ON THERMOELECTRICS, PROCEEDINGS, 2006, : 689 - +
[4] Synthesis and thermoelectric properties of magnetically c-axis-oriented [Ca2CoO3-δ]0.62CoO2 bulk with various oxygen contents
Sano, M
Horii, S
Matsubara, I
Funahashi, R
Shikano, M
Shimoyama, J
Kishio, K
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2003, 42 (2B): : L198 - L200
[5] Modulated structure of the thermoelectric compound [Ca2CoO3]0.62CoO2
Miyazaki, Y
Onoda, M
Oku, T
Kikuchi, M
Ishii, Y
Ono, Y
Morii, Y
Kajitani, T
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2002, 71 (02) : 491 - 497
[6] Effect of Co content on [Ca2CoO3−δ]0.62[CoO2] thermoelectric properties
Ya-nan Li
Ping Wu
Shi-ping Zhang
Jin-guang Yang
Dan Yan
Xiu-lan Huai
Journal of Materials Science: Materials in Electronics, 2020, 31 : 5353 - 5359
[7] Environmentally friendly synthesis methods to obtain the misfit [Ca2CoO3-δ]0.62[CoO2] thermoelectric material
Emerenciano, Aline A.
Araujo, Allan J. M.
Grilo, Joao P. F.
Macedo, Daniel A.
Rasekh, Shahed
Kovalevsky, Andrei, V
Paskocimas, Carlos A.
Nascimento, Rubens M.
MATERIALS LETTERS, 2019, 254 : 286 - 289
[8] Thermoelectric and magnetic properties of [(Ca1-xPbx)2CoO3.1]0.62CoO2 (0≤x≤0.03)
Nakatsugawa, Hiroshi
Jeong, Hyeon Mook
Kim, Rak Hee
Gomi, Natsuko
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2007, 46 (5A): : 3004 - 3012
[9] High-resolution electron microscopy study of [(Ca,Bi)2CoO3]0.62CoO2
Yubuta, Kunio
Huang, Xiangyang
Miyazaki, Yuzuru
Kajitani, Tsuyoshi
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2008, 77 (09)
[10] The thermoelectric properties of [Ca2CoO3]0.62[CoO2] textured ceramics
Huang, X. Y.
Miyazaki, Y.
Yubuta, K.
Oide, Y.
Kajitani, T.
ICT'06: XXV INTERNATIONAL CONFERENCE ON THERMOELECTRICS, PROCEEDINGS, 2006, : 89 - +

← 1 2 3 4 5 →