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ChemEngineering 2017, 1(1), 5; doi:10.3390/chemengineering1010005

Novel Method Based on Spin-Coating for the Preparation of 2D and 3D Si-Based Anodes for Lithium Ion Batteries

1
Groupe de Recherche en Matériaux, Microélectronique, Acoustique et Nanotechnologies (GREMAN), Unité Mixte de Recherche (UMR) 7347, Centre National de la Recherche Scientifique (CNRS)/Université François Rabelais de Tours, Institut Universitaire de Technologie (IUT) de Blois, 15 rue de la Chocolaterie, Blois 41000, France
2
Groupe de Recherche en Matériaux, Microélectronique, Acoustique et Nanotechnologies (GREMAN), Unité Mixte de Recherche (UMR) 7347, Centre National de la Recherche Scientifique (CNRS)/Université François Rabelais de Tours, Site STMicroelectronics, 16 rue Pierre et Marie Curie, Tours 37071, France
3
Groupe de Recherches sur L’énergétique des Milieux Ionisés (GREMI), Unité Mixte de Recherche (UMR) 7344, Centre National de la Recherche Scientifique (CNRS)/Université d’Orléans, 14 rue d’Issoudun, Orléans 45067, France
4
Physico-Chimie des Matériaux et des Électrolytes Pour L’ENERGIE (PCM2E), Université François Rabelais de Tours, Parc de Grandmont, Tours 37200, France
*
Authors to whom correspondence should be addressed.
Received: 21 June 2017 / Revised: 21 July 2017 / Accepted: 24 July 2017 / Published: 27 July 2017
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Abstract

The present study describes a novel strategy for preparing thin Silicon 2D and 3D electrodes for lithium ion batteries by a spin coating method. A homogeneous and stable suspension of Si nanoparticles (SiNPs) was prepared by dispersing the nanoparticles in 1-methyl-2-pyrrolidone (NMP) or in the room temperature ionic liquid 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (Pyr14TFSI). This proposed methodology was successfully employed to prepare 2D and 3D with different aspect ratios electrodes. Both 2D and 3D materials were then used as anode materials. The 2D SiNPs anodes exhibit a high reversible capacity, which is close to 3500 mAh·g−1 at C/10. For a higher discharge rate, the capacity of the 2D anode is considerably improved by dispersing the nanoparticles in Pyr14TFSI instead of NMP solvent. In order to further improve the anode performances, graphene particles were added to the SiNPs suspension. The anodes prepared using this suspension method exhibit relatively low columbic efficiency during the first few cycles (less than 30%) and low reversible capacity (2800 mAh·g−1 at C/10). The 3D SiNPs (NMP) electrode shows a higher intensity during cyclic voltammograms and a better stability under galvanostatic cycling than the 2D SiNPs (NMP) electrode. View Full-Text
Keywords: silicon nanoparticles; spin-coating; lithium ion; anode; room temperature ionic liquid; graphene silicon nanoparticles; spin-coating; lithium ion; anode; room temperature ionic liquid; graphene
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Gabard, M.; Zaghrioui, M.; Chouteau, D.; Grimal, V.; Tillocher, T.; Ghamouss, F.; Poirot, N. Novel Method Based on Spin-Coating for the Preparation of 2D and 3D Si-Based Anodes for Lithium Ion Batteries. ChemEngineering 2017, 1, 5.

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