Alternative Strategy for Development of Dielectric Calcium Copper Titanate-Based Electrolytes for Low-Temperature Solid Oxide Fuel Cells

Abstract

Highlights Dielectric CaCu3Ti4O12 (CCTO) was used as electrolyte in low-temperature solid oxide fuel cells for the first time. A new heterostructure electrolyte was designed based on CCTO and Ni0.8Co0.15Al0.05LiO2−δ (NCAL). Promising ionic conductivity and high fuel cell performance were achieved CCTO–NCAL realized an electrolyte function due to its good dielectric property and a heterojunction effect.

Keywords

• LT-SOFCs
• Dielectric CaCu3Ti4O12
• Semiconductor Ni0.8Co0.15Al0.05LiO2−δ
• Ionic conductivity
• Heterostructure electrolyte