Cited 15 time in webofscience Cited 16 time in scopus

Facile synthesis of Ag-coated silicon nanowires as anode materials for high-performance rechargeable lithium battery

Title
Facile synthesis of Ag-coated silicon nanowires as anode materials for high-performance rechargeable lithium battery
Authors
Baek, Seong-HoPark, Jung-SooJeong, Young-MinKim, Jae Hyun
DGIST Authors
Baek, Seong-HoKim, Jae Hyun
Issue Date
2016-03-05
Citation
Journal of Alloys and Compounds, 660, 387-391
Type
Article
Article Type
Article
Keywords
Ag CoatingAg Nanoparticles (AgNP)Anode MaterialAnode MaterialsAnodesCoated MaterialsCoatingsCost EffectivenessElectric BatteriesElectric ConductivityElectrical ConductivityElectro-Chemical ElectrodesElectro-Chemical Impedance Spectroscopy (EIS)Electrochemical Impedance Spectroscopy MeasurementsElectrochemical PerformanceElectrodesEtchingHigh Resolution Transmission Electron MicroscopyLithium-Ion BatteriesLithium AlloysLithium CompoundsLithium Ion BatteriesMetal-Assisted Chemical EtchingNanowiresRechargeable Lithium BatteryRedox ReactionsSecondary BatteriesSiliconSilicon BatteriesSilicon NanowireSilicon NanowiresSilverTransmission Electron Microscopy
ISSN
0925-8388
Abstract
Herein, we suggest a facile and cost-effective metal-assisted chemical etching (MACE) method to synthesize uniformly Ag-coated silicon nanowires (SiNWs) using redox reaction, which provides structural and electrical effects on Si negative electrodes at the same time. The combinations of SiNW geometry and Ag nanoparticle (AgNP) coatings are beneficial in preventing pulverization and increasing electrical conductivity of Si negative electrode during cycling, as a result, excellent electrochemical performances are obtained. Transmission electron microscopy (TEM) images reveal that Ag-coated SiNW arrays have been successfully prepared in one-pot MACE process. The electrochemical performances show that the rate capability and cycleability of Ag-coated SiNWs is greatly improved compare to bare NWs. Electrochemical impedance spectroscopy (EIS) measurements show that the electrical conductivity of Ag-coated SiNW electrode is significantly enhanced by Ag coating. © 2015 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/5113
DOI
10.1016/j.jallcom.2015.11.131
Publisher
Elsevier
Related Researcher
Files:
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Collection:
Smart Textile Convergence Research Group1. Journal Articles


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