Large Area High‐Performance Thin Film Solid Oxide Fuel Cell with Nanoscale Anode Functional Layer by Scalable Reactive Sputtering
For high-performance thin-film solid oxide cells (TF-SOCs), a nanostructured anode functional layer (n-AFL) that can prolong the triple-phase boundary (TPB) is crucial, particularly for low-temperature operation. However, the implementation of n-AFL (usually >1 µm in thickness) has critical issues in scale-up and productivity. Here, the study successfully demonstrates a large-area, high-performance TF-SOFC with an n-AFL fabricated via mass-production-compatible reactive magnetron sputtering. The cell with optimized n-AFL by adjusting crucial reactive-sputtering process parameters, i.e., oxygen partial pressure and sputtering power, shows superior performance compared to that of the cell without n-AFL: the reduction both in ohmic and anodic polarization resistances by 63% and 34%, respectively, and the improvement in maximum power density by 89% (0.705 W cm<sup>-2</sup> vs 1.333 W cm<sup>-2</sup>) at 650 °C. When employed in large-scale cell (4 × 4 cm<sup>2</sup>), the TF-SOFC with n-AFL showed 19.4 W at 650 °C.
Authors
- Sung Eun Jo (ORCID: https://orcid.org/0009-0004-2394-9937)
- Seongkook Oh
- Jihwan An (ORCID: https://orcid.org/0000-0002-7697-9935)
- Young‐Beom Kim (ORCID: https://orcid.org/0000-0002-0307-0595)
- Sungeun Yang (ORCID: https://orcid.org/0000-0001-9202-930X)
- Jong‐Hyuk Lee (ORCID: https://orcid.org/0000-0003-1976-4089)
- Wanwoo Park
- Byung Chan Yang
- Hyong June Kim
- Jisung Yoon
- Ji‐Won Son (ORCID: https://orcid.org/0000-0002-5310-0633)
- Hyunmin Kim (ORCID: https://orcid.org/0000-0002-9338-4597)
- Juhwan Lee (ORCID: https://orcid.org/0000-0002-6323-8513)
- Dong Won Shin (ORCID: https://orcid.org/0000-0001-6082-9599)
- Kyoungjae Ju
Institutions
- Pohang University of Science and Technology (KR)
- Korea University (KR)
- Hanyang University (KR)
- Korea Institute of Science and Technology (KR)
- Korea University of Science and Technology (KR)
- Daegu University (KR)
Publication Details
- Journal
- Advanced Science
- Published
- 2025-05-29
- DOI
- https://doi.org/10.1002/advs.202502504
- Citations
- 3
- Primary Topic
- Advancements in Solid Oxide Fuel Cells
- Type
- article
- Field-Weighted Citation Impact
- 1.55
Funders
- National Research Foundation
- Ministry of Trade, Industry and Energy
- National Research Foundation of Korea
- Korea Institute of Energy Technology Evaluation and Planning