Graphene Networks Anchored with Sn@Graphene as Lithium Ion Battery Anode
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- 8 January 2014
- journal article
- Published by American Chemical Society (ACS) in ACS Nano
- Vol. 8 (2), 1728-1738
- https://doi.org/10.1021/nn406105n
Abstract
A facile and scalable in situ chemical vapor deposition (CVD) technique using metal precursors as a catalyst and a three-dimensional (3D) self-assembly of NaCl particles as a template is developed for one-step fabrication of 3D porous graphene networks anchored with Sn nanoparticles (5–30 nm) encapsulated with graphene shells of about 1 nm ([email protected]) as a superior lithium ion battery anode. In the constructed architecture, the CVD-synthesized graphene shells with excellent elasticity can effectively not only avoid the direct exposure of encapsulated Sn to the electrolyte and preserve the structural and interfacial stabilization of Sn nanoparticles but also suppress the aggregation of Sn nanoparticles and buffer the volume expansion, while the interconnected 3D porous graphene networks with high electrical conductivity, large surface area, and high mechanical flexibility tightly pin the core–shell structure of [email protected] and thus lead to remarkably enhanced electrical conductivity and structural integrity of the overall electrode. As a consequence, this 3D hybrid anode exhibits very high rate performance (1022 mAh/g at 0.2 C, 865 mAh/g at 0.5 C, 780 mAh/g at 1 C, 652 mAh/g at 2 C, 459 mAh/g at 5 C, and 270 mAh/g at 10 C, 1 C = 1 A/g) and extremely long cycling stability even at high rates (a high capacity of 682 mAh/g is achieved at 2 A/g and is maintained approximately 96.3% after 1000 cycles). As far as we know, this is the best rate capacity and longest cycle life ever reported for a Sn-based lithium ion battery anode.Keywords
This publication has 54 references indexed in Scilit:
- Monodisperse Sn Nanocrystals as a Platform for the Study of Mechanical Damage during Electrochemical Reactions with LiNano Letters, 2013
- Monodisperse and Inorganically Capped Sn and Sn/SnO2 Nanocrystals for High-Performance Li-Ion Battery AnodesJournal of the American Chemical Society, 2013
- Uniform Nano-Sn/C Composite Anodes for Lithium Ion BatteriesNano Letters, 2013
- The dimensionality of Sn anodes in Li-ion batteriesMaterials Today, 2012
- Sn buffered by shape memory effect of NiTi alloys as high-performance anodes for lithium ion batteriesActa Materialia, 2012
- Sponge-like porous carbon/tin composite anode materials for lithium ion batteriesJournal of Materials Chemistry, 2012
- An Advanced Lithium Ion Battery Based on High Performance Electrode MaterialsJournal of the American Chemical Society, 2011
- Tin Nanoparticles Encapsulated in Porous Multichannel Carbon Microtubes: Preparation by Single-Nozzle Electrospinning and Application as Anode Material for High-Performance Li-Based BatteriesJournal of the American Chemical Society, 2009
- Building better batteriesNature, 2008
- Nanostructured Sn–C Composite as an Advanced Anode Material in High‐Performance Lithium‐Ion BatteriesAdvanced Materials, 2007