Interfacial Modification for High-Efficient Reversible Protonic Ceramic Cell with a Spin-Coated BaZr_0.1Ce_0.7Y_0.2O_3-δ...

Area of Science:

• Materials Science
• Electrochemistry
• Ceramic Engineering

Background:

• Protonic ceramic electrolyte thin films are crucial for electrochemical cells.
• Weak adhesion and low sinterability of perovskite materials cause high interfacial resistance and poor performance.

Purpose of the Study:

• To develop a method for improving interfacial connection in protonic ceramic cells.
• To enhance the performance of electrochemical cells utilizing BaZr_0.1Ce_0.7Y_0.2O_3-δ (BZCY) electrolyte.

Main Methods:

• Fabrication of Ni-BZCY anode, BZCY electrolyte, and La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ-BZCY cathode layers via slurry spin coating.
• Analysis of the influence of electrode functional layers and electrolyte slurry composition on cell microstructure and electrochemical kinetics.

Main Results:

• Achieved a peak power density of 2345 mW cm^-2 at 700 °C in fuel cell mode.
• Obtained a current density of -3.0 A cm^-2 at 1.3 V in electrolysis mode.

Conclusions:

• The developed method effectively improves interfacial connection in slurry spin-coated protonic ceramic cells.
• Enhanced interfacial properties lead to significantly boosted electrochemical performance.