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journal article·2025-08Open access

Large Area High‐Performance Thin Film Solid Oxide Fuel Cell with Nanoscale Anode Functional Layer by Scalable Reactive Sputtering

Kyoungjae Ju, Seongkook Oh, Jong Hyuk Lee, Hyong June Kim, Hyunmin Kim, Sung Eun Jo, Juhwan Lee, Byung Chan Yang, Jisung Yoon, Dong Won Shin, Wanwoo Park, Ji‐Won Son, Young‐Beom Kim, Sungeun Yang, Jihwan An

Advanced Science· Volume 12· Issue 29
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Source abstract

Abstract

Abstract 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 −2 vs 1.333 W cm −2 ) at 650 °C. When employed in large‐scale cell (4 × 4 cm 2 ), the TF‐SOFC with n‐AFL showed 19.4 W at 650 °C.
Source: crossref · Quality: baseline

Research context

Energy storageNanomaterials

OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Electronic and Structural Properties of Oxides · Fuel Cells and Related Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Mechanical Engineering Pohang University of Science and Technology (POSTECH) Pohang 37673 Republic of Korea

Energy Material Research Center Korea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea

Division of Nanoscience and Technology KIST School, Korea University of Science and Technology (UST) Seoul 02792 Republic of Korea

Department of Mechanical Engineering Hanyang University Seoul 04763 Republic of Korea

Research and Development Team AVACO Co., Ltd Daegu 42724 Republic of Korea

Graduate School of Energy and Environment (KU‐KIST Green School) Korea University Seoul 02841 Republic of Korea

Funding

Korea Institute of Energy Technology Evaluation and Planning · National Research Foundation of Korea

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