Mitigating proton trapping in cubic perovskite oxides via ScO6 octahedral networks Article Swipe
Kota Tsujikawa
,
Junji HYODO
,
Susumu Fujii
,
Kazuki Takahashi
,
Yuto Tomita
,
Nai Shi
,
Yasukazu Murakami
,
Shusuke Kasamatsu
,
Yoshihiro YAMAZAKI
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1038/s41563-025-02311-w
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1038/s41563-025-02311-w
Advances in electrochemical devices have been primarily driven by the discovery and development of electrolyte materials. Yet the development of high-performance and chemically stable proton-conducting oxide electrolytes remains a challenge due to proton trapping and the resulting trade-offs between ionic carrier concentration and conductivity in doped oxides. Here we demonstrate that cubic perovskite oxides with heavy Sc doping can overcome these limitations. BaSn 0.3 Sc 0.7 O 3– δ and BaTi 0.2 Sc 0.8 O 3– δ are found to exceed the technological threshold of a total proton conductivity of 0.01 S cm −1 for fuel cell electrolytes at 300 °C. The structural stability of BaSn 0.3 Sc 0.7 O 3– δ is further validated under harsh chemical and fuel cell conditions. Molecular dynamics simulations using a machine learning force field illustrate rapid proton diffusion pathways along the ScO 6 octahedral network, effectively mitigating proton trapping, while protons are preferentially associated with Sc. Lattice softness is proposed as a primary design descriptor for increasing Sc content in perovskite oxides and developing high-performance electrolytes for electrochemical devices.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1038/s41563-025-02311-w
- https://www.nature.com/articles/s41563-025-02311-w.pdf
- OA Status
- hybrid
- Cited By
- 1
- References
- 55
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4413055813
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Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4413055813Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1038/s41563-025-02311-wDigital Object Identifier
- Title
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Mitigating proton trapping in cubic perovskite oxides via ScO6 octahedral networksWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2025Year of publication
- Publication date
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2025-08-08Full publication date if available
- Authors
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Kota Tsujikawa, Junji HYODO, Susumu Fujii, Kazuki Takahashi, Yuto Tomita, Nai Shi, Yasukazu Murakami, Shusuke Kasamatsu, Yoshihiro YAMAZAKIList of authors in order
- Landing page
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https://doi.org/10.1038/s41563-025-02311-wPublisher landing page
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https://www.nature.com/articles/s41563-025-02311-w.pdfDirect link to full text PDF
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YesWhether a free full text is available
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hybridOpen access status per OpenAlex
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https://www.nature.com/articles/s41563-025-02311-w.pdfDirect OA link when available
- Concepts
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Octahedron, Trapping, Perovskite (structure), Materials science, Proton, Cubic crystal system, Chemical physics, Chemical engineering, Crystallography, Nanotechnology, Crystal structure, Chemistry, Physics, Engineering, Quantum mechanics, Ecology, BiologyTop concepts (fields/topics) attached by OpenAlex
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1Total citation count in OpenAlex
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2025: 1Per-year citation counts (last 5 years)
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55Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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