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Thickness-Controllable Electrode of Lithium Titanium Oxide Nanowire Sheets with Multiple Stacked Morphology for Ultrahigh Areal Capacity and Stability of Lithium-Ion Batteries

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Download Hi-Res ImageDownload to MS-PowerPointCite This:Energy Fuels 2023, 37, 16, 12445-12456
    Batteries and Energy Storage

    Thickness-Controllable Electrode of Lithium Titanium Oxide Nanowire Sheets with Multiple Stacked Morphology for Ultrahigh Areal Capacity and Stability of Lithium-Ion Batteries
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    • Jaejin Bae
      Jaejin Bae
      Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang-si 37673, Gyeongsangbuk-do, Republic of Korea
      More by Jaejin Bae
    • Junhyuk Ji
      Junhyuk Ji
      Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang-si 37673, Gyeongsangbuk-do, Republic of Korea
      More by Junhyuk Ji
      Orcidhttps://orcid.org/0000-0003-1766-3030
    • Minho Kim
      Minho Kim
      Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang-si 37673, Gyeongsangbuk-do, Republic of Korea
      More by Minho Kim
      Orcidhttps://orcid.org/0000-0002-0151-4527
    • Song Kyu Kang
      Song Kyu Kang
      Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang-si 37673, Gyeongsangbuk-do, Republic of Korea
      More by Song Kyu Kang
    • Gwan Hyeon Park
      Gwan Hyeon Park
      Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang-si 37673, Gyeongsangbuk-do, Republic of Korea
      More by Gwan Hyeon Park
    • Yun Ho Jeong
      Yun Ho Jeong
      Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang-si 37673, Gyeongsangbuk-do, Republic of Korea
      More by Yun Ho Jeong
    • Changshin Jo
      Changshin Jo
      Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang-si 37673, Gyeongsangbuk-do, Republic of Korea
      Graduate Institute of Ferrous & Energy Materials Technology, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang-si 37673, Gyeongsangbuk-do, Republic of Korea
      More by Changshin Jo
      Orcidhttps://orcid.org/0000-0002-2533-2197
    • Won Bae Kim*
      Won Bae Kim
      Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang-si 37673, Gyeongsangbuk-do, Republic of Korea
      Graduate Institute of Ferrous & Energy Materials Technology, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang-si 37673, Gyeongsangbuk-do, Republic of Korea
      *Email: [email protected]
      More by Won Bae Kim
      Orcidhttps://orcid.org/0000-0002-1251-9681
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    Energy & Fuels

    Cite this: Energy Fuels 2023, 37, 16, 12445–12456
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    https://doi.org/10.1021/acs.energyfuels.3c01808
    Published August 8, 2023
    Copyright © 2023 American Chemical Society
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    Abstract

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    Nowadays, thickness optimization of an electrode is considered an effective approach to achieve a high energy density or high areal capacity of Li-ion batteries. In this paper, we report a simple electrospinning technique to develop free-standing sheet bundles of lithium titanium oxide (LTO) nanowires with a readily controlled thickness of electrodes. The LTO nanowire sheet bundles (LNSBs) can show a very high areal capacity as an anode due to its microscale layer-by-layer configuration in which the nanoscale LTO nanowires are networked in each microscale layer. Such unique structures with interspaces formed between the multiple stacked sheet layers should promote electrolytes to efficiently penetrate through the thick electrode layer. Nanoscale wire assemblies can also increase the transfer rates of ions and electrons during the lithiation/delithiation processes. Consequently, the fabricated LNSB electrode delivers an ultrahigh areal capacity of up to ca. 14.2 mA h cm–2 for the first cycle and ca. 6.5 mA h cm–2 for the 500th cycle at 0.2C rate current density, which is a much larger areal capacity than the commercial graphite anode (ca. 3.5 mA h cm–2). Such a high areal discharge capacity on a novel free-standing electrode design could provide an idea for advanced energy storage applications.

    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.energyfuels.3c01808.

    • Electrode density, BET surface area and porosity properties, SEM images before and after air stabilization, TEM image and EELS mappings, SAED patterns with crystal plane, HRTEM image representing each particles and crystal planes, XPS patterns for various elements, galvanostatic charge/discharge profiles for initial 3 cycles, diffusion coefficient values for anodic and cathodic reactions, galvanostatic charge/discharge profiles for various current densities, comparison of our work with published results of areal capacity, equivalent circuit of EIS fitted data, differential analysis (dQ/dV) plot for 500 cycles, XRD data after 500 cycles, lattice parameter changes during lithiation and delithiation processes, and life cycle stability tests and charge–discharge profiles of LFP/LTO full cells (PDF)

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    This article is cited by 2 publications.

    1. Junhyuk Ji, Junchae Jeong, Seochan Hong, Yongju Lee, Donghyuk Kim, Won Bae Kim. Interfacial Engineering Strategy to Avoid Oxidation Reaction and Boost Charge Transport Kinetics of Microparticle Silicon Larger than 5 μm for Stable Full Cell Lithium‐Ion Battery. Batteries & Supercaps 2025, 49 https://doi.org/10.1002/batt.202500037
    2. Mohamed M. Abdelaal, Mohammad Alkhedher. Enhancing Li 4 Ti 5 O 12 Anodes for High‐Performance Batteries: Ti 3+ Induction via Plasma‐Enhanced Chemical Vapor Deposition and Dual Carbon/LLZO Coatings. Batteries & Supercaps 2024, 7 (12) https://doi.org/10.1002/batt.202400482
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    Energy & Fuels

    Cite this: Energy Fuels 2023, 37, 16, 12445–12456
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.energyfuels.3c01808
    Published August 8, 2023
    Copyright © 2023 American Chemical Society
    Request reuse permissions

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