稀土Y元素掺杂对PrBaCo2O5+δ陶瓷热电性能影响

被引：1

作者：

王娇 ^{[1
,2
]}

王菲菲 ^{[1
,2
]}

郝好山 ^{[1
]}

王远 ^{[1
]}

刘少辉 ^{[1
,2
]}

机构：

[1] 河南工程学院材料工程学院河南省电子陶瓷材料与应用重点实验室

[2] 河南工程学院材料工程学院河南省稀土复合材料国际联合实验室

来源：

功能材料 | 2023年 / 54卷 / 03期

关键词：

PrBaCo2O5+δ; 热电性能; 掺杂; 晶体结构; 电导率;

D O I：

暂无

中图分类号：

TB34 [功能材料];

学科分类号：

080501 ;

摘要：

利用传统陶瓷烧结工艺制备出不同浓度稀土Y元素掺杂PrBaCo2O5+δ氧化物热电陶瓷，采用XRD和热电材料性能测试系统等设备研究了稀土Y元素掺杂对PrBaCo2O5氧化物热电陶瓷晶体结构、热电性能的影响。测试结果表明：Pr1-xYxBaCo2O5+δ热电陶瓷均为双层钙钛矿结构，没有形成新的杂相；在测试温度范围内，Pr1-xYxBaCo2O5+δ（x=0,0.25,0.5,0.75）热电陶瓷的Seebeck系数均为正值，表明该材料导电载流子为以空穴，为p型半导体；稀土Y元素掺杂可以明显提高Pr1-xYxBaCo2O5+δ热电陶瓷的电导率，与电导率相反，稀土元素Y掺杂的导致Pr1-xYxBaCo2O5+δ热电陶瓷的Seebeck系数降低；Pr0.25Y0.75BaCo2O5+δ热电陶瓷在1 073 K有最大的功率因子79.4μW/（m·K2）。

引用

页码：3162 / 3166

页数：5

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