Improved ionic conductivity of Ca-doped and Ca-La co-doped ceria electrolytes for intermediate temperature solid oxide fuel cells

被引：2
|
作者：
Manjanna, Jayappa [1 ]
Jakati, Mubeen Hasanasab [1 ]
Momin, Naeemakhtar [1 ,2 ]
机构：
[1] Rani Channamma Univ, Dept Chem, Belagavi 591156, Karnataka, India
[2] Ctr Nano & Mat Sci, JAIN Global Campus, Bengaluru 562112, Karnataka, India
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2024年 / 1005卷
关键词：
Solid oxide fuel cell; Electrolyte; Ca and La; doped CeO 2; Impedance; Ionic conductivity; Activation energy; ELECTRICAL-PROPERTIES; COMBUSTION SYNTHESIS; OPTICAL-PROPERTIES; ELECTROCHEMICAL PROPERTIES; RAMAN-SCATTERING; CEO2; NANOPARTICLES; SOFC; LANTHANUM; CERAMICS;
D O I：
10.1016/j.jallcom.2024.176085
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Improved ionic conductivity of electrolytes is necessary for solid oxide fuel cells, meant for the development of efficient and clean energy devices. This study is focused on the enhancement of ionic conductivity in Ca-doped and Ca-La co-doped cerium oxide (ceria) electrolytes for intermediate-temperature solid oxide fuel cells (ITSOFCs). The co-doped ceria electrolytes, LCDC20 (Ce0.8La0.1Ca0.1O2- delta), exhibited enhanced ionic conductivity of 1.06 x10- 1 S cm- 1 at 1073 K, when compared to conventional yttria-stabilized zirconia (YSZ) electrolytes, and has lower activation energy of 1.02 eV. Also, these co-doped electrolytes showed decreased sintering temperatures, which amounts to cost-effective electrolyte materials for IT-SOFCs.
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页数：13
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