Abstract
Spinel-structured LiNi0.5Mn1.5O4 (LNMO), which is used as a cathode material for lithium-ion batteries, offers economic and eco-friendly advantages, as it operates at a high voltage of 5 V and does not require expensive cobalt. However, challenges such as low electronic conductivity and volume changes due to phase transitions during charging and discharging at 3 V or lower persist, resulting in capacity degradation. In this study, LNMO nanofibers were created using the electrospinning method to tackle the volume expansion issue and maintain structural integrity of the material. In addition, the electrode was constructed with carbon nanotubes as a conductive material to improve electronic conductivity. Electrochemical evaluations showed that LNMO nanofibers combined with carbon nanotubes exhibited a higher capacity and outstanding cyclability compared to LNMO powder.
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The data cannot be made publicly available upon publication because they are not available in a format that is sufficiently accessible or reusable by other researchers. The data that support the findings of this study are available upon reasonable request from the authors.
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Acknowledgements
This work was supported by the 2023 Research Fund of the University of Ulsan.
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by MKG. The first draft of the manuscript was written by MKG, NYK, JYC, and JWJ. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Kim, NY., Gi, M.K., Chandio, Z.A. et al. Breaking Limits of Li-Ion Batteries with High-Voltage Spinel LiNi0.5Mn1.5O4 Nanofiber/Carbon Nanotube Composite Cathodes. Korean J. Chem. Eng. 41, 1513–1520 (2024). https://doi.org/10.1007/s11814-024-00099-0
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DOI: https://doi.org/10.1007/s11814-024-00099-0