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Stable Supercapacity of Binder-Free TiO2(B) Epitaxial Electrodes for All-Solid-State Nanobatteries

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    Stable Supercapacity of Binder-Free TiO2(B) Epitaxial Electrodes for All-Solid-State Nanobatteries
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    • Dongha Kim
      Dongha Kim
      Department of Physics and Chemistry and Department of Emerging Materials Science, DGIST, Daegu 42988, Republic of Korea
      More by Dongha Kim
    • Jingyeong Jeon
      Jingyeong Jeon
      Department of Physics and Chemistry and Department of Emerging Materials Science, DGIST, Daegu 42988, Republic of Korea
      More by Jingyeong Jeon
    • Joon Deok Park
      Joon Deok Park
      Center for Energy Materials Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
      More by Joon Deok Park
    • Xiao-Guang Sun
      Xiao-Guang Sun
      Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
      More by Xiao-Guang Sun
      Orcidhttps://orcid.org/0000-0001-8451-3011
    • Xiang Gao
      Xiang Gao
      Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
      More by Xiang Gao
      Orcidhttps://orcid.org/0000-0002-7496-158X
    • Ho Nyung Lee
      Ho Nyung Lee
      Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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      Orcidhttps://orcid.org/0000-0002-2180-3975
    • Judith L. MacManus-Driscoll
      Judith L. MacManus-Driscoll
      Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
      More by Judith L. MacManus-Driscoll
      Orcidhttps://orcid.org/0000-0003-4987-6620
    • Deok-Hwang Kwon*
      Deok-Hwang Kwon
      Center for Energy Materials Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
      *D.-H.K.: email, [email protected]
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    • Shinbuhm Lee*
      Shinbuhm Lee
      Department of Physics and Chemistry and Department of Emerging Materials Science, DGIST, Daegu 42988, Republic of Korea
      *S.L.: email, [email protected]
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      Orcidhttps://orcid.org/0000-0002-4907-7362
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    Nano Letters

    Cite this: Nano Lett. 2023, 23, 15, 6815–6822
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    https://doi.org/10.1021/acs.nanolett.3c00596
    Published July 27, 2023
    Copyright © 2023 American Chemical Society
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    Abstract

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    Owing to its pseudocapacitive, unidimensional, rapid ion channels, TiO2(B) is a promising material for application to battery electrodes. In this study, we align these channels by epitaxially growing TiO2(B) films with the assistance of an isostructural VO2(B) template layer. In a liquid electrolyte, binder-free TiO2(B) epitaxial electrodes exhibit a supercapacity near the theoretical value of 335 mA h g–1 and an excellent charge–discharge reproducibility for ≥200 cycles, which outperform those of other TiO2(B) nanostructures. For the all-solid-state configuration employing the LiPON solid electrolyte, excellent stability persists. Our findings suggest excellent potential for miniaturizing all-solid-state nanobatteries in self-powered integrated circuits.

    Copyright © 2023 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acs.nanolett.3c00596.

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    This article is cited by 3 publications.

    1. Fan Wu, Lijing Fan, Yanxin Chen, Shaohua Chen, Jieyi Shen, Pengxin Liu. Crystallization of 2D TiO2 Nanosheets via Oriented Attachment of 1D Coordination Polymer. Nano Letters 2025, 25 (1) , 56-62. https://doi.org/10.1021/acs.nanolett.4c04084
    2. Jie Zheng, Rui Xia, Najma Yaqoob, Payam Kaghazchi, Johan E. ten Elshof, Mark Huijben. Simultaneous Enhancement of Lithium Transfer Kinetics and Structural Stability in Dual-Phase TiO2 Electrodes by Ruthenium Doping. ACS Applied Materials & Interfaces 2024, 16 (7) , 8616-8626. https://doi.org/10.1021/acsami.3c15122
    3. Xuanchi Zhou, Yongjie Jiao, Wentian Lu, Jinjian Guo, Xiaohui Yao, Jiahui Ji, Guowei Zhou, Huihui Ji, Zhe Yuan, Xiaohong Xu. Hydrogen‐Associated Filling‐Controlled Mottronics Within Thermodynamically Metastable Vanadium Dioxide. Advanced Science 2025, https://doi.org/10.1002/advs.202414991
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    Nano Letters

    Cite this: Nano Lett. 2023, 23, 15, 6815–6822
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.nanolett.3c00596
    Published July 27, 2023
    Copyright © 2023 American Chemical Society
    Request reuse permissions

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