%0 Journal Article
%T Thermoelectric Characterization of (Na1-yMy)1.6Co2O4 (M=K, Ca, Sr)<br>Thermoelectric Characterization of （Na1-yMy）1.6Co2O4 （M=K, Ca, Sr）
%A Ying LI
%A Guiying XU
%A Maofa JIANG
%A <br>Ying LI
%A Guiying XU and Maofa JIANG School of Material and Metallurgy
%A Northeastern University
%A Shenyang
%A China University of Science and Technology Beijing
%A Beijing
%A China
%J 材料科学技术学报
%D 2006
%I 
%X Oxide materials NaCo2O4 and (Na1-yMy)1.6Co2O4 (M=K, 0.05≤y≤0.35; M=Ca, Sr, 0.10≤y≤0.40) were prepared by a sol-gel method. Experimental results indicated that the Seebeck coefficient and the Powerfactor of NaCo2O4 were improved by doping Ca and Sr but not by K. The Power-factor of NaCo2O4 is in its maximum, 1.68×10-4 W·m-1·K-2 and 11% bigger than that of the original one when the dopant fraction of Ca was 0.1. Doping Sr makes NaCo2O4 have the biggest Power-factor, 1.68×10-4 W·m-1·K-2 that is 50% bigger than the non-doping oxide. The experimental results indicate that suitable dopants and addition amounts could improve the thermoelectric properties of NaCo2O4 greatly.
%K Thermoelectric materials
%K Electric properties
%K Sol-Gel method
%K Doping<br>热电材料
%K 热电性能
%K 溶胶-凝胶法
%K 掺杂
%K （Na1-yMy）1.6Co2O4
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=154A4CEDAC0CC5A12819B668F343C189&yid=37904DC365DD7266&vid=BC12EA701C895178&iid=E158A972A605785F&sid=E3D3D8D1B650AE1E&eid=652E7E360EBE3082&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=19