Slurry Synthesis and Thin-Film Fabrication Toward Production of Li₂O-B₂O₃-Al₂O₃-Based Multilayer Oxide Solid-State Batteries for Internet of Things Applications
Developing thin-film sheets made of oxide-based solid electrolytes is essential for fabricating surface-mounted ultracompact multilayer oxide solid-state batteries. To this end, solid-electrolyte slurry must be optimized for excellent dispersibility. Although oxide-based solid electrolytes for multi...
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2024-12-01
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| author | Jihyun Park Jongmin Choi Jihye Seo Wolil Nam Soobeom Lee Seungchan Cho Kyungchul Park Geonhyoung An Beomkyeong Park Moonhee Choi |
| author_facet | Jihyun Park Jongmin Choi Jihye Seo Wolil Nam Soobeom Lee Seungchan Cho Kyungchul Park Geonhyoung An Beomkyeong Park Moonhee Choi |
| author_sort | Jihyun Park |
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| description | Developing thin-film sheets made of oxide-based solid electrolytes is essential for fabricating surface-mounted ultracompact multilayer oxide solid-state batteries. To this end, solid-electrolyte slurry must be optimized for excellent dispersibility. Although oxide-based solid electrolytes for multilayer structures require sintering, high processing temperatures cause problems such as Li-ion volatilization and reactions with graphite anodes. Thus, low-temperature sinterable oxide-based solid-electrolyte materials should be devised. We successfully developed the conditions for producing thin films from 21 μm thick solid-electrolyte sheets of Li<sub>2</sub>O-B<sub>2</sub>O<sub>3</sub>-Al<sub>2</sub>O<sub>3</sub>, one of the most promising candidates for multilayer solid-state batteries. A comprehensive analysis of the fabricated thin films included X-ray diffraction (XRD) to confirm their amorphous structure, scanning electron microscopy (SEM) for particle morphology, and contact angle measurements to verify surface hydrophilicity. Evaluation of a 32-layer bulk sample of solid-electrolyte sheets revealed an ionic conductivity of 2.33 × 10<sup>−7</sup> S/cm and charge transfer resistance of 100.1 kΩ at a sintering temperature of 430 °C. Based on these results, cathode and anode active materials will be applied to develop high-energy-density multilayer ceramic batteries with hundreds of layers in future work. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2024-12-01 |
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| series | Micromachines |
| spelling | doaj-art-e58ee28e80764d7aa71d1c161ca65cde2025-01-24T13:41:55ZengMDPI AGMicromachines2072-666X2024-12-011613910.3390/mi16010039Slurry Synthesis and Thin-Film Fabrication Toward Production of Li₂O-B₂O₃-Al₂O₃-Based Multilayer Oxide Solid-State Batteries for Internet of Things ApplicationsJihyun Park0Jongmin Choi1Jihye Seo2Wolil Nam3Soobeom Lee4Seungchan Cho5Kyungchul Park6Geonhyoung An7Beomkyeong Park8Moonhee Choi9Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju 52851, Republic of KoreaSchool of Materials Science and Engineering, Pusan National University, Busan 46241, Republic of KoreaElectronic Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju 52851, Republic of KoreaElectronic Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju 52851, Republic of KoreaDepartment of Energy System Engineering, Gyeongsang National University, Jinju 52725, Republic of KoreaComposites Research Division, Korea Institute of Materials Science, Changwon 51508, Republic of KoreaKorea Research Institute for Defense Technology Planning and Advancement, 40, Sadeul-Ro, Jinju 52851, Republic of KoreaDepartment of Energy System Engineering, Gyeongsang National University, Jinju 52725, Republic of KoreaSchool of Materials Science and Engineering, Pusan National University, Busan 46241, Republic of KoreaElectronic Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju 52851, Republic of KoreaDeveloping thin-film sheets made of oxide-based solid electrolytes is essential for fabricating surface-mounted ultracompact multilayer oxide solid-state batteries. To this end, solid-electrolyte slurry must be optimized for excellent dispersibility. Although oxide-based solid electrolytes for multilayer structures require sintering, high processing temperatures cause problems such as Li-ion volatilization and reactions with graphite anodes. Thus, low-temperature sinterable oxide-based solid-electrolyte materials should be devised. We successfully developed the conditions for producing thin films from 21 μm thick solid-electrolyte sheets of Li<sub>2</sub>O-B<sub>2</sub>O<sub>3</sub>-Al<sub>2</sub>O<sub>3</sub>, one of the most promising candidates for multilayer solid-state batteries. A comprehensive analysis of the fabricated thin films included X-ray diffraction (XRD) to confirm their amorphous structure, scanning electron microscopy (SEM) for particle morphology, and contact angle measurements to verify surface hydrophilicity. Evaluation of a 32-layer bulk sample of solid-electrolyte sheets revealed an ionic conductivity of 2.33 × 10<sup>−7</sup> S/cm and charge transfer resistance of 100.1 kΩ at a sintering temperature of 430 °C. Based on these results, cathode and anode active materials will be applied to develop high-energy-density multilayer ceramic batteries with hundreds of layers in future work.https://www.mdpi.com/2072-666X/16/1/39Internet of Thingsmicrobatteriesmicroelectronicsoxide-based all-solid-state batteryoxide solid electrolyte |
| spellingShingle | Jihyun Park Jongmin Choi Jihye Seo Wolil Nam Soobeom Lee Seungchan Cho Kyungchul Park Geonhyoung An Beomkyeong Park Moonhee Choi Slurry Synthesis and Thin-Film Fabrication Toward Production of Li₂O-B₂O₃-Al₂O₃-Based Multilayer Oxide Solid-State Batteries for Internet of Things Applications Micromachines Internet of Things microbatteries microelectronics oxide-based all-solid-state battery oxide solid electrolyte |
| title | Slurry Synthesis and Thin-Film Fabrication Toward Production of Li₂O-B₂O₃-Al₂O₃-Based Multilayer Oxide Solid-State Batteries for Internet of Things Applications |
| title_full | Slurry Synthesis and Thin-Film Fabrication Toward Production of Li₂O-B₂O₃-Al₂O₃-Based Multilayer Oxide Solid-State Batteries for Internet of Things Applications |
| title_fullStr | Slurry Synthesis and Thin-Film Fabrication Toward Production of Li₂O-B₂O₃-Al₂O₃-Based Multilayer Oxide Solid-State Batteries for Internet of Things Applications |
| title_full_unstemmed | Slurry Synthesis and Thin-Film Fabrication Toward Production of Li₂O-B₂O₃-Al₂O₃-Based Multilayer Oxide Solid-State Batteries for Internet of Things Applications |
| title_short | Slurry Synthesis and Thin-Film Fabrication Toward Production of Li₂O-B₂O₃-Al₂O₃-Based Multilayer Oxide Solid-State Batteries for Internet of Things Applications |
| title_sort | slurry synthesis and thin film fabrication toward production of li₂o b₂o₃ al₂o₃ based multilayer oxide solid state batteries for internet of things applications |
| topic | Internet of Things microbatteries microelectronics oxide-based all-solid-state battery oxide solid electrolyte |
| url | https://www.mdpi.com/2072-666X/16/1/39 |
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