Binder-free LiNi0.8Mn0.1Co0.1O2 electrode enabled by single-walled carbon nanotube coating for Li-ion batteries
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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9
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Journal of Energy Storage, Volume 104, issue Part B
Abstract
Herein, we report a solvent-free preparation procedure for a binder-free LiNi0.8Mn0.1Co0.1O2 (NCM811 or NMC811) positive electrode consisting of only 0.2 wt% single-walled carbon nanotubes (SWCNTs) and 99.8 wt% NCM811. SWCNTs form a three-dimensional conductive network within NCM811 particles, facilitating electron transfer across the NCM811 electrode, while maintaining high content of the active material. The binder-free NCM811-SWCNT electrode provides a high discharge specific capacity of ~190 mAh g−1 at 0.2C current rate retaining 38 % more of the initial capacity than a conventional electrode after 200 charge-discharge cycles at 1C. Electrochemical techniques such as operando X-ray diffraction and dilatometry has been applied for the first time to gain a deeper understanding of binder-free electrode structure evolution induced by electrochemical transformations. The data obtained demonstrates a good agreement between macroscopic and microscopic parameters changes for a NCM-SWCNT electrode.Description
Publisher Copyright: © 2024 The Authors
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Bogdanova, A R, Obrezkov, F A, Khabushev, E M, Kong, X & Kallio, T 2024, 'Binder-free LiNi 0.8 Mn 0.1 Co 0.1 O 2 electrode enabled by single-walled carbon nanotube coating for Li-ion batteries', Journal of Energy Storage, vol. 104, no. Part B, 114627. https://doi.org/10.1016/j.est.2024.114627