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Alomari, Suaad A.
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article
Three-dimensional nitrogen-doped rGO-siloxene nanocomposite anode for Li-ion storage
Abstract
<p>In this work, we synthesize a 3D nitrogen-doped rGO (NrGO)-siloxene aerogel nanocomposite using a simple and low-cost hydrothermal process and demonstrate its use as an anode material for lithium-ion storage. The meso-macroporous structure of the N-doped rGO (NrGO) aerogel enhances the electrical conductivity and accommodates the volume expansion of siloxene sheets during cycling. Thereby, the NrGO-siloxene (NGSil) composite shows improved kinetics and structural stability resulting in an excellent reversible discharge capacity of 472.07 mA h g<sup>−1</sup> at 0.1 A g<sup>−1</sup>, which is higher than those of the hydrothermally treated siloxene (HT-Sil, 31.59 mA h g<sup>−1</sup>) and the undoped rGO-siloxene (GSil, 296.33 mA h g<sup>−1</sup>). Moreover, the NGSil composite exhibits a good rate performance (177 mA h g<sup>−1</sup> at 6 A g<sup>−1</sup>), and excellent long-term cycling stability (243.12 mA h g<sup>−1</sup> after 1000 cycles) with a steady coulombic efficiency of 99.5% at 1 A g<sup>−1</sup>.</p>