Discovery of fast and stable proton storage in bulk hexagonal molybdenum oxide
Abstract Ionic and electronic transport in electrodes is crucial for electrochemical energy storage technology. To optimize the transport pathway of ions and electrons, electrode materials are minimized to nanometer-sized dimensions, leading to problems of volumetric performance, stability, cost, an...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-12-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-43603-6 |
| _version_ | 1797388220588097536 |
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| author | Tiezhu Xu Zhenming Xu Tengyu Yao Miaoran Zhang Duo Chen Xiaogang Zhang Laifa Shen |
| author_facet | Tiezhu Xu Zhenming Xu Tengyu Yao Miaoran Zhang Duo Chen Xiaogang Zhang Laifa Shen |
| author_sort | Tiezhu Xu |
| collection | DOAJ |
| description | Abstract Ionic and electronic transport in electrodes is crucial for electrochemical energy storage technology. To optimize the transport pathway of ions and electrons, electrode materials are minimized to nanometer-sized dimensions, leading to problems of volumetric performance, stability, cost, and pollution. Here we find that a bulk hexagonal molybdenum oxide with unconventional ion channels can store large amounts of protons at a high rate even if its particle size is tens of micrometers. The diffusion-free proton transport kinetics based on hydrogen bonding topochemistry is demonstrated in hexagonal molybdenum oxide whose proton conductivity is several orders of magnitude higher than traditional orthorhombic molybdenum oxide. In situ X-ray diffraction and theoretical calculation reveal that the structural self-optimization in the first discharge effectively promotes the reversible intercalation/de-intercalation of subsequent protons. The open crystal structure, suitable proton channels, and negligible volume strain enable rapid and stable proton transport and storage, resulting in extremely high volumetric capacitance (~1750 F cm–3), excellent rate performance, and ultralong cycle life (>10,000 cycles). The discovery of unconventional materials and mechanisms that enable proton storage of micrometer-sized particles in seconds boosts the development of fast-charging energy storage systems and high-power practical applications. |
| first_indexed | 2024-03-08T22:37:38Z |
| format | Article |
| id | doaj.art-ad8df310196a4d86892aa1a3d3d60e5f |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-08T22:37:38Z |
| publishDate | 2023-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-ad8df310196a4d86892aa1a3d3d60e5f2023-12-17T12:23:26ZengNature PortfolioNature Communications2041-17232023-12-0114111310.1038/s41467-023-43603-6Discovery of fast and stable proton storage in bulk hexagonal molybdenum oxideTiezhu Xu0Zhenming Xu1Tengyu Yao2Miaoran Zhang3Duo Chen4Xiaogang Zhang5Laifa Shen6Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and AstronauticsJiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and AstronauticsJiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and AstronauticsJiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and AstronauticsJiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and AstronauticsJiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and AstronauticsJiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and AstronauticsAbstract Ionic and electronic transport in electrodes is crucial for electrochemical energy storage technology. To optimize the transport pathway of ions and electrons, electrode materials are minimized to nanometer-sized dimensions, leading to problems of volumetric performance, stability, cost, and pollution. Here we find that a bulk hexagonal molybdenum oxide with unconventional ion channels can store large amounts of protons at a high rate even if its particle size is tens of micrometers. The diffusion-free proton transport kinetics based on hydrogen bonding topochemistry is demonstrated in hexagonal molybdenum oxide whose proton conductivity is several orders of magnitude higher than traditional orthorhombic molybdenum oxide. In situ X-ray diffraction and theoretical calculation reveal that the structural self-optimization in the first discharge effectively promotes the reversible intercalation/de-intercalation of subsequent protons. The open crystal structure, suitable proton channels, and negligible volume strain enable rapid and stable proton transport and storage, resulting in extremely high volumetric capacitance (~1750 F cm–3), excellent rate performance, and ultralong cycle life (>10,000 cycles). The discovery of unconventional materials and mechanisms that enable proton storage of micrometer-sized particles in seconds boosts the development of fast-charging energy storage systems and high-power practical applications.https://doi.org/10.1038/s41467-023-43603-6 |
| spellingShingle | Tiezhu Xu Zhenming Xu Tengyu Yao Miaoran Zhang Duo Chen Xiaogang Zhang Laifa Shen Discovery of fast and stable proton storage in bulk hexagonal molybdenum oxide Nature Communications |
| title | Discovery of fast and stable proton storage in bulk hexagonal molybdenum oxide |
| title_full | Discovery of fast and stable proton storage in bulk hexagonal molybdenum oxide |
| title_fullStr | Discovery of fast and stable proton storage in bulk hexagonal molybdenum oxide |
| title_full_unstemmed | Discovery of fast and stable proton storage in bulk hexagonal molybdenum oxide |
| title_short | Discovery of fast and stable proton storage in bulk hexagonal molybdenum oxide |
| title_sort | discovery of fast and stable proton storage in bulk hexagonal molybdenum oxide |
| url | https://doi.org/10.1038/s41467-023-43603-6 |
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