Fabrication and Performance Evaluation of Ba(Zr0.1Ce0.7Y0.2)O3-δ (BZCY)-based Tubular Solid Oxide Fuel Cells

JIN GOO Lee

doi:10.3740/MRSK.2025.35.8.384

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2025 Vol.35, Issue 8 Preview Page Next Page

Research Paper

Fabrication and Performance Evaluation of Ba(Zr_0.1Ce_0.7Y_0.2)O_3-δ (BZCY)-based Tubular Solid Oxide Fuel Cells Ba(Zr_0.1Ce_0.7Y_0.2)O_3-δ (BZCY) 기반 원통형 고체산화물 연료전지(SOFC)의 제조 및 성능 평가

27 August 2025. pp. 384-389

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Abstract

Researchers have made significant strides in developing high-performance anode-supported tubular solid oxide fuel cells (SOFCs). These cells feature a thin, dense electrolyte made of Ba(Zr_0.1Ce_0.7Y_0.2)O_3-δ (BZCY). The fabrication process involved several key steps. First, fine BZCY powder was prepared using a co-precipitation method. Next, Ni-BZCY anode tubes were created via an extrusion process, boasting a 34 % porosity and an average pore size of 0.381 µm. To optimize cell performance, a Ni-BZCY/BZCY nanocomposite slurry was applied as an anode functional layer (AFL) using a dip-coating method. The BZCY electrolyte itself was then coated with a vacuum slurry coating, and finally, an LSCF-BZCY cathode was added, prepared with dip-coating methods. Impedance analysis, conducted under open-circuit conditions at 700 °C, revealed impressive electrical characteristics. The BZCY electrolyte showed an ohmic resistance of approximately 0.79 Ωcm^-2 and a very low polarization resistance of about 0.036 Ωcm^-2. When tested in a humidified hydrogen atmosphere (3 % H₂O) at temperatures ranging from 600 °C to 700 °C, these tubular BZCY cells delivered outstanding power output. Specifically, they achieved a remarkable maximum power density of roughly 0.51 Wcm^-2 at 700 °C. This research highlights the potential of these advanced tubular solid oxide fuel cells based on the BZCY as a proton conductor for efficient energy conversion.

Keywords

solid oxide fuel cell

barium zirconium cerium yttrium oxide

functional layer

tubular

proton conductor

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 35
No :8
Pages :384-389
Received Date : 2025-07-25
Revised Date : 2025-08-06
Accepted Date : 2025-08-06
DOI :https://doi.org/10.3740/MRSK.2025.35.8.384

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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