posted on 2021-01-25, 21:44authored byWeilin Zhang, Yucun Zhou, A. Mohammed Hussain, Dong Song, Yohei Miura, Yu Chen, Zheyu Luo, Nicholas Kane, Yinghua Niu, Nilesh Dale, Yosuke Fukuyama, Meilin Liu
Solid
oxide fuel cells (SOFCs) are a promising solution to a sustainable
energy future. However, cell performance and stability remain a challenge.
Durable, nanostructured electrodes fabricated via a simple, cost-effective
method are an effective way to address these problems. In this work,
both the nanostructured PrBa0.5Sr0.5Co1.5Fe0.5O5+δ (PBSCF) cathode and Ni–Ce0.8Sm0.2O1.9 (SDC) anode are fabricated
on a porous yttria-stabilized zirconia (YSZ) backbone via solution
infiltration. Symmetrical cells with a configuration of PBSCF|YSZ|PBSCF
show a low interfacial polarization resistance of 0.03 Ω cm2 with minimal degradation at 700 °C for 600 h. Ni-SDC|YSZ|PBSCF
single cells exhibit a peak power density of 0.62 W cm–2 at 650 °C operated on H2 with good thermal cycling
stability for 110 h. Single cells also show excellent coking tolerance
with stable operation on CH4 for over 120 h. This work
offers a promising pathway toward the development of high-performance
and durable SOFCs to be powered by natural gas.