A novel silicon nanoparticles-infilled capsule prepared by an oil-in-water emulsion strategy for high-performance Li-ion battery anodes
- 14 August 2020
- journal article
- research article
- Published by IOP Publishing in Nanotechnology
- Vol. 31 (33), 335403
- https://doi.org/10.1088/1361-6528/ab90b9
Abstract
Conventional approaches for preparing yolk-shell nanostructures require complicated procedures such as multi-step coatings and template removal. Herein, we present a new and general strategy for making yolk-shell nanocomposites based on an oil-in-water emulsion system. As a demonstrating case, silicon nanoparticles were dispersed in an oil phase which was in an oil-in-water emulsion; then the oil/water interface wasin-situpolymerized to form microcapsules. After carbonization, the shell of microcapsules was formed. The Li-ion battery anodes based on the microcapsules exhibit a good electrochemical performance including stable capacity and high rate-performance. The capacity remains 1100 mAh g(-1)after 500 cycles at a current density of 1.9 A g(-1), along with a Coulombic efficiency of 99.9%. In addition, the method presented here is general, which is applicable for the synthesis of many yolk shell-structured nanocomposites.Funding Information
- Science and Technology Major Project of Anhui Province (18030901093)
This publication has 39 references indexed in Scilit:
- Distinctive morphology effects of porous-spherical/yolk-shell/hollow Pd-nitrogen-doped-carbon spheres catalyst for catalytic reduction of 4-nitrophenolJournal of Colloid and Interface Science, 2017
- Facile synthesis of Si-C nanocomposites with yolk-shell structure as an anode for lithium-ion batteriesJournal of Alloys and Compounds, 2017
- Facile synthesis of 3D silicon/carbon nanotube capsule composites as anodes for high-performance lithium-ion batteriesJournal of Power Sources, 2016
- Nitrogen-doped graphene enwrapped silicon nanoparticles with nitrogen-doped carbon shell: a novel nanocomposite for lithium-ion batteriesElectrochimica Acta, 2016
- Micro-sized nano-porous Si/C anodes for lithium ion batteriesNano Energy, 2015
- Graphene Oxide-Immobilized NH2-Terminated Silicon Nanoparticles by Cross-Linked Interactions for Highly Stable Silicon Negative ElectrodesACS Applied Materials & Interfaces, 2014
- Microencapsulated Carbon Black Suspensions for Restoration of Electrical ConductivityAdvanced Functional Materials, 2014
- Capsule clusters fabricated by polymerization based on capsule-in-water-in-oil Pickering emulsionsPolymer Chemistry, 2013
- Robust, Double-Walled Microcapsules for Self-Healing Polymeric MaterialsACS Applied Materials & Interfaces, 2010
- Interpretation of Raman spectra of disordered and amorphous carbonPhysical Review B, 2000