A dense BaZr0.1Ce0.7Y0.2O3-δ (BZCY) electrolyte is fabricated on a porous anode by in situ drop-coating method which can lead to extremely thin electrolyte membrane (∼10 μm in thickness). The layered perovskite structure oxide PrBaCo2O5+δ (PBCO) is synthesized by auto ignition process and initially examined as a cathode for proton-conducting IT-SOFCs. The electrical conductivity of PrBaCo2O5+δ (PBCO) reaches the general required value for the electrical conductivity of cathode absolutely. The single cell, consisting of PrBaCo2O5+δ (PBCO)/BaZr0.1Ce0.7Y0.2O3-δ (BZCY)/NiO-BaZr0.1Ce0.7Y0.2O3-δ (BZCY) structure, is assembled and tested from 600 to 700 °C with humidified hydrogen (∼3% H2O) as the fuel and air as the oxidant. An open-circuit potential of 1.01 V and a maximum power density of 545 mW cm-2 at 700 °C are obtained for the single cell, and a low polarization resistance of the electrodes of 0.15 Ω cm2 is achieved at 700 °C.
- High performance
- Proton-conducting solid oxide fuel cell
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering