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Thermoelectric properties of a doped LaNiO3 perovskite system prepared using a spark-plasma sintering process

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Abstract

Both perovskites LaNiO3 and LaCuO3 have a limitation associated with phase transitions for high-temperature thermoelectric applications. The optimized conditions were investigated to obtain the LaNi1−x Cu x O3−δ perovskite single phase showing a Cu-doping effect into Ni sites against unintended deoxidized phases. Three advantages of synergetic effects due to the simultaneous presence of nickel and copper were investigated: a low melting temperature of CuO as compared to that of NiO, the absence of intermediated deoxidized phases in the LaCuO3 system, and the Cu doping effect, which suppresses the formation of intermediate secondary phases. A solid solution was also fabricated using a spark-plasma sintering (SPS) process for the purpose of sintering LaNi1−x Cu x O3−δ compositions at a low sintering temperature.

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Authors and Affiliations

  1. Energy & Environmental Division, Korea Institute of Ceramic Engineering and Technology, Seoul, 153-801, Korea

    Jang-Yeul Tak & Won-Seon Seo

  2. School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 440-746, Korea

    Jang-Yeul Tak & Hyung Koun Cho

  3. School of Energy, Materials and Chemical Engineering, Korea University of Technology and Education, Cheonan, 330-708, Korea

    Soon-Mok Choi

Authors
  1. Jang-Yeul Tak
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  2. Soon-Mok Choi
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  3. Won-Seon Seo
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  4. Hyung Koun Cho
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Correspondence to Soon-Mok Choi or Won-Seon Seo.

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Tak, JY., Choi, SM., Seo, WS. et al. Thermoelectric properties of a doped LaNiO3 perovskite system prepared using a spark-plasma sintering process. Electron. Mater. Lett. 9, 513–516 (2013). https://doi.org/10.1007/s13391-013-0034-0

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  • DOI: https://doi.org/10.1007/s13391-013-0034-0

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