Abstract
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.
Original language | English (US) |
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Pages (from-to) | 835-837 |
Number of pages | 3 |
Journal | Journal of Power Sources |
Volume | 194 |
Issue number | 2 |
DOIs | |
State | Published - Dec 1 2009 |
Externally published | Yes |
Keywords
- Cathode
- 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