Improvement in thermoelectric properties of CuAlO2 by adding Fe2O3

K. Park; K. Y. Ko; H. C. Kwon; S. Nahm

doi:10.1016/j.jallcom.2006.07.067

Improvement in thermoelectric properties of CuAlO₂ by adding Fe₂O₃

K. Park, K. Y. Ko, H. C. Kwon, S. Nahm

Department of Materials Science and Engineering

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

67 Citations (Scopus)

Abstract

Fe addition up to x = 0.1 in CuAl_1-xFe_xO₂ (0 ≤ x ≤ 0.2) led to an increase in electrical conductivity with an increase in Fe content because of increases in the grain size, density, and carrier density. On the other hand, Fe substitution up to x = 0.1 caused a decrease in the Seebeck coefficient due mainly to an increase in carrier density. The highest value of power factor (1.1 × 10^-4 W m^-1 K^-2) was attained for CuAl_0.9Fe_0.1O₂ at 1140 K. We have demonstrated in the present study that Fe addition is highly effective for enhancing high-temperature thermoelectric properties of CuAlO₂.

Original language	English
Pages (from-to)	1-6
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	437
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2006.07.067
Publication status	Published - 2007 Jun 28

Keywords

CuAlFeO
Electrical conductivity
Power factor
Seebeck coefficient
Thermoelectric properties

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2006.07.067

Cite this

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title = "Improvement in thermoelectric properties of CuAlO2 by adding Fe2O3",

abstract = "Fe addition up to x = 0.1 in CuAl1-xFexO2 (0 ≤ x ≤ 0.2) led to an increase in electrical conductivity with an increase in Fe content because of increases in the grain size, density, and carrier density. On the other hand, Fe substitution up to x = 0.1 caused a decrease in the Seebeck coefficient due mainly to an increase in carrier density. The highest value of power factor (1.1 × 10-4 W m-1 K-2) was attained for CuAl0.9Fe0.1O2 at 1140 K. We have demonstrated in the present study that Fe addition is highly effective for enhancing high-temperature thermoelectric properties of CuAlO2.",

keywords = "CuAlFeO, Electrical conductivity, Power factor, Seebeck coefficient, Thermoelectric properties",

author = "K. Park and Ko, {K. Y.} and Kwon, {H. C.} and S. Nahm",

note = "Funding Information: The authors would like to acknowledge the financial support provided for this research by the Korea Energy Management Corporation (KEMCO). ",

year = "2007",

month = jun,

day = "28",

doi = "10.1016/j.jallcom.2006.07.067",

language = "English",

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journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

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TY - JOUR

T1 - Improvement in thermoelectric properties of CuAlO2 by adding Fe2O3

AU - Park, K.

AU - Ko, K. Y.

AU - Kwon, H. C.

AU - Nahm, S.

N1 - Funding Information: The authors would like to acknowledge the financial support provided for this research by the Korea Energy Management Corporation (KEMCO).

PY - 2007/6/28

Y1 - 2007/6/28

N2 - Fe addition up to x = 0.1 in CuAl1-xFexO2 (0 ≤ x ≤ 0.2) led to an increase in electrical conductivity with an increase in Fe content because of increases in the grain size, density, and carrier density. On the other hand, Fe substitution up to x = 0.1 caused a decrease in the Seebeck coefficient due mainly to an increase in carrier density. The highest value of power factor (1.1 × 10-4 W m-1 K-2) was attained for CuAl0.9Fe0.1O2 at 1140 K. We have demonstrated in the present study that Fe addition is highly effective for enhancing high-temperature thermoelectric properties of CuAlO2.

AB - Fe addition up to x = 0.1 in CuAl1-xFexO2 (0 ≤ x ≤ 0.2) led to an increase in electrical conductivity with an increase in Fe content because of increases in the grain size, density, and carrier density. On the other hand, Fe substitution up to x = 0.1 caused a decrease in the Seebeck coefficient due mainly to an increase in carrier density. The highest value of power factor (1.1 × 10-4 W m-1 K-2) was attained for CuAl0.9Fe0.1O2 at 1140 K. We have demonstrated in the present study that Fe addition is highly effective for enhancing high-temperature thermoelectric properties of CuAlO2.

KW - CuAlFeO

KW - Electrical conductivity

KW - Power factor

KW - Seebeck coefficient

KW - Thermoelectric properties

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