the effect of (ag, ni, zn)-addition on the thermoelectric properties of copper aluminate的影响(ag)、镍、锌)之外的热电性能铜铝酸.pdf

Materials 2010, 3, 318-328; doi:10.3390/ma3010318 OPEN ACCESS materials ISSN 1996-1944 /journal/materials Article The Effect of (Ag, Ni, Zn)-Addition on the Thermoelectric Properties of Copper Aluminate Shun-ichi Yanagiya 1,2,*, Ngo Van Nong 2, Jianxiao Xu 2 and Nini Pryds 2 1 Department of Electrical and Electronic Engineering, Hakodate National College of Technology, 14-1 Tokura, Hakodate, Hokkaido 042-8501, Japan 2 Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark, Roskilde 4000, Denmark; E-Mails: ngno@risoe.dtu.dk (N.N.); jiax@risoe.dtu.dk (J.X.); nipr@risoe.dtu.dk (N.P.) * Author to whom correspondence should be addressed; E-Mail: yanagiya@hakodate-ct.ac.jp; Tel.: +81-138-59-6423; Fax: +81-138-59-6423. Received: 21 December 2009; in revised form: 7 January 2010 / Accepted: 8 January 2010 / Published: 11 January 2010 Abstract: Polycrystalline bulk copper aluminate Cu Ag B AlO with B = Ni or Zn were 1-x-y x y 2 prepared by spark plasma sintering and subsequent thermal treatment. The influence of partial substitution of Ag, Ni and Zn for Cu-sites in CuAlO2 on the high temperature thermoelectric properties has been studied. The addition of Ag and Zn was found to enhance the formation of CuAlO2 phase and to increase the electrical conductivity. The addition of A