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journal article·2025-10Open access

Anion Sublattice Engineering via Fluorine Doping to Enhance δ‐Bi 2 O 3 Stability for Low‐Temperature Solid Oxide Electrochemical Cells (Small 41/2025)

Donghun Lee, Hyunseung Kim, Seung Jin Jeong, Hyeongmin Yu, Incheol Jeong, WooChul Jung, Kang Taek Lee

Small· Volume 21· Issue 41
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Source abstract

Abstract

Solid Oxide Electrochemical Cells In article number 2503922, Incheol Jeong, WooChul Jung, Kang Taek Lee, and co-workers present the groundbreaking discovery to stabilize δ-Bi2O3-based oxygen ionic conductors via F− doping. The phase instability of δ-Bi2O3 was effectively suppressed at lower temperatures by modulating the anion sublattice through F− incorporation, thereby retaining its superionic conductivity. Furthermore, F−-doped Bi2O3 was applied to solid oxide electrochemical cells, enabling highly efficient and stable operation.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Gas Sensing Nanomaterials and Sensors · Perovskite Materials and Applications

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Affiliations

Department of Mechanical Engineering KAIST Daejeon 34141 Republic of Korea

Department of Materials Science and Engineering Research Institute of Advanced Materials Seoul National University Seoul 08826 Republic of Korea

Department of Materials Science and Engineering KAIST Daejeon 34141 Republic of Korea

Resources Utilization Research Center Korea Institute of Geoscience and Mineral Resources Daejeon 34132 Republic of Korea

KAIST Graduate School of Green Growth & Sustainability Daejeon 34141 Republic of Korea

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