Structural and electrical performance of Ce0.33Ca0.34Ti0.33O1.66 based solid oxide fuel cell electrolyte fabricated using ball milling techniques

Abstract

In the present work, calcium and titanium are doped with ceria in an effort to create a unique, effective electrolyte for solid oxide fuel cell applications (Ce0.33Ca0.34Ti0.33O1.66 (CCT-33)). CCT-33 is prepared through solid state method through ball milling and calcination. XRD analysis of the CCT-33 revealed cubic fluorite crystal structure favorable for oxygen ion conduction. Electron microscopy analysis of the sintered pellets revealed good compactness of the phase pure powders and crystallinity. The conductivity studied using impedance analysis is 10−3–10−4 S cm−1 in the temperature region of 500–630 °C. At 700 °C the highest value of 2.86 × 10−2 S cm−1 in considered temperature region was obtained. The present work introduces innovative, modified material for Intermediate Temperature Solid Oxide Fuel Cell (IT-SOFCs).

Keywords

• Doped Ceria
• Impedance Analysis
• Ball Milling
• Ionic Conductivity
• IT- SOFC