%0 Journal Article
%T PREPARATION OF Na_(1.4)Co_2O_4 BASED THERMOELECTRIC MATERIALS BY SOL-GEL METHOD AND CHARACTERIZATION<br>Na_(1.4)Co_2O_4基热电材料的溶胶-凝胶法制备及表征
%A LI Ying
%A MA Beiyue
%A WANG Zhenming
%A JIANG Maofa School of Materials
%A Metallurgy
%A Northeastern University
%A Shenyang
%A <br>厉英
%A 马北越
%A 王臻明
%A 姜茂发
%J 金属学报
%D 2011
%I 
%X 采用溶胶-凝胶法制备了掺杂Sr, Li和Cu的Na1.4Co2O4基热电材料, 采用XRD分析了Na1.4Co2O4基热电材料的相组成.通过DTA-TG曲线确定材料的预烧结和终烧结温度分别为450和850 ℃. 研究了掺杂量对Na1.4Co2O4基材料电阻率、Seebeck系数和功率因子等热电性能的影响. 结果表明, 掺杂Li可降低Na1.4Co2O4的电阻率, 掺杂 Sr和Cu使材料的电阻率增加; 掺杂Li和Cu可大幅度提高Na1.4Co2O4的Seebeck系数和功率因子; 掺杂Sr的改善效果不显著, 掺杂Li的效果最好; 当Li掺杂量为0.40, Na1.4Co2O4基热电材料的功率因子在15℃时达到最大值 7444.73 μW?m-1?K-2.
%K thermoelectric material
%K cobaltite
%K thermoelectric property
%K doping
%K sol-gel method<br>热电材料
%K 钴酸盐
%K 热电性能
%K 掺杂
%K 溶胶-凝胶法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=D6F7C1F44BF6D88BD715985A8E9C161C&yid=9377ED8094509821&vid=F4B561950EE1D31A&iid=CA4FD0336C81A37A&sid=91C9056D8E8856E0&eid=DDD31293A7C7D057&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=0