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Enhancement of Columbic Efficiency and Capacity of Li-Ion Batteries using a Boron Nitride Nanotubes-Dispersed-Electrolyte with High Ionic Conductivity

  • Dolly Yadav
    Dolly Yadav
    R&D Center, NAiEEL Technology, 6-2 Yuseongdaero 1205, Daejeon 34104, Republic of Korea
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  • Jung-Hwan Jung
    Jung-Hwan Jung
    R&D Center, NAiEEL Technology, 6-2 Yuseongdaero 1205, Daejeon 34104, Republic of Korea
  • Yurim Lee
    Yurim Lee
    Department of Polymer Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
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  • Thomas You-Seok Kim
    Thomas You-Seok Kim
    R&D Center, NAiEEL Technology, 6-2 Yuseongdaero 1205, Daejeon 34104, Republic of Korea
  • Eunkwang Park
    Eunkwang Park
    R&D Center, NAiEEL Technology, 6-2 Yuseongdaero 1205, Daejeon 34104, Republic of Korea
  • Ki-In Choi
    Ki-In Choi
    R&D Center, NAiEEL Technology, 6-2 Yuseongdaero 1205, Daejeon 34104, Republic of Korea
    More by Ki-In Choi
  • Jungho Cha
    Jungho Cha
    R&D Center, NAiEEL Technology, 6-2 Yuseongdaero 1205, Daejeon 34104, Republic of Korea
    More by Jungho Cha
  • Woo-Jin Song*
    Woo-Jin Song
    Department of Polymer Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
    Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea
    *Email: [email protected]
    More by Woo-Jin Song
  • Jae-Hak Choi
    Jae-Hak Choi
    Department of Polymer Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
    More by Jae-Hak Choi
  • Seokgwang Doo
    Seokgwang Doo
    Department of Energy Engineering, Korea Institute of Energy Technology, 72 Unjeong-ro, Naju, Jeonnam 58217, Republic of Korea
  • , and 
  • Jaewoo Kim*
    Jaewoo Kim
    R&D Center, NAiEEL Technology, 6-2 Yuseongdaero 1205, Daejeon 34104, Republic of Korea
    *Email: [email protected]
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Cite this: ACS Materials Lett. 2023, 5, 10, 2648–2655
Publication Date (Web):August 30, 2023
https://doi.org/10.1021/acsmaterialslett.3c00538
Copyright © 2023 The Authors. Published by American Chemical Society

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    Abstract

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    Carbon nanotubes (CNT) are currently used as conductive additives for the electrodes to enhance the capacity of the lithium-ion batteries (LIBs), and we herein for the first time demonstrate the feasibility of boron nitride nanotubes (BNNT) as an electrolyte additive for lithium ion batteries (LIBs). The 0.9 wt % BNNT electrolyte yielded enhanced Li-ion conductivity up to 30% (∼0.87 mS/cm) and a much higher Li-ion transference number (∼0.73) compared to electrolytes without BNNT. The BNNT dispersed electrolyte (1 M LiPF6 in ethylene carbonate/dimethyl carbonate) prepared via sonication serves as a new electrolyte formulation, together with the NCM622//graphite full cell, and exhibits the highest reversible capacities of 153 mAh/g at 1 C and excellent cyclic retention over 500 cycles at high 10 C with a specific capacity of 71.5 mAh/g and a Coulombic efficiency of 99.6% compared to 125.3 mAh/g at 1 C and 40 mAh/g at 10 C with only 97.5% Coulombic efficiency without BNNT, respectively. Overall, we suggest BNNT as a new class of functional electrolyte material that resolves the major limitations of conventional carbonate-based electrolytes and is compatible for different electrolytes/electrode materials aimed at practical implementations for current as well as advanced LIBs.

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsmaterialslett.3c00538.

    • Experimental details, ionic conductivities of different filler materials, EIS, CV, SEM images, thermal stability of PP separator, cycle performance of NCM/Li half-cell, voltage profiles and cycle performance of LCO//Graphite pouch cell, and XPS spectra of BNNT before and after electrolyte exposure (PDF)

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    Cited By

    This article is cited by 1 publications.

    1. Numan Yanar, Thomas You-Seok Kim, Junghwan Jung, Duy Khoe Dinh, Ki-in Choi, Arni G. Pornea, Dolly Yadav, Zahid Hanif, Eunkwang Park, Jaewoo Kim. Boron Nitride Nanotube-Aligned Electrospun PVDF Nanofiber-Based Composite Films Applicable to Wearable Piezoelectric Sensors. ACS Applied Nano Materials 2024, 7 (10) , 11715-11726. https://doi.org/10.1021/acsanm.4c01296