A Binder-Free Nickel-Rich Cathode Composite Utilizing Low-Bundled Single-Walled Carbon Nanotubes
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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11
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Advanced Materials Technologies, Volume 9, issue 14
Abstract
In this study, the performance of a binder-free LiNi0.6Co0.2Mn0.2O2 (NMC622) positive electrode utilizing single-walled carbon nanotubes (SWCNTs) is investigated and compared to the conventional state-of-the-art NMC622 composite positive electrode. The binder-free electrode has been prepared without using toxic and expensive N-Methyl-2-pyrrolidone (NMP) solvent and it is free-standing that allows a wider range of applications such as flexible devices. Electrochemical techniques such as cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge–discharge reveal that the binder-free positive electrode performance is similar to the conventional composite cathodes, deducing that only ≈1% of SWCNTs perform well not only as a conductive agent but also as a binder. The NMC622 composite electrode with SWCNTs provided specific capacity of 135.8 mAh g−1 at a 5C rate during discharge, with above 97% capacity retention after the rate capability test in a half cell.Description
Publisher Copyright: © 2024 The Authors. Advanced Materials Technologies published by Wiley-VCH GmbH.
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Mousavihashemi, S, Khabushev, E M, Lahtinen, J, Bogdanova, A R, Novikov, I V, Krasnikov, D V, Nasibulin, A G & Kallio, T 2024, 'A Binder-Free Nickel-Rich Cathode Composite Utilizing Low-Bundled Single-Walled Carbon Nanotubes', Advanced Materials Technologies, vol. 9, no. 14, 2301765. https://doi.org/10.1002/admt.202301765