NDLI: Optimization of tin intermetallics and composite electrodes for lithium-ion batteries obtained by sonochemical synthesis

Content Provider	Springer Nature Link
Author	González, José R. Alcántara, Ricardo Nacimiento, Francisco Tirado, José L.
Copyright Year	2013
Abstract	The optimization of active electrode materials for advanced lithium batteries obtained by sonochemically promoted reactions is discussed. Composites containing amorphous CoSn intermetallic compound and exfoliated graphite are prepared by a combination of graphite mechanical exfoliation followed by the reduction of Co2+ and Sn2+ solutions in tetraethyleneglycol with NaBH4 with simultaneous high-intensity ultrasonication. X-ray diffraction and electron microscopy reveal relevant similarities with the negative electrode of the commercial Nexelion™ battery. The resulting nanocomposite is tested as an electrode material using a lithium polyacrylate binder. The electrochemical cycling in lithium test cells shows capacities around 400 mAh/g after 400 cycles, and the ac impedance spectra reveal low resistance values. In the first discharge, nanocrystalline Li x Sn is formed. After cycling, the metallic nanoparticles (ca. 7–20 nm) remain to be X-ray amorphous and embedded in the binder.
Starting Page	2495
Ending Page	2501
Page Count	7
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	17
Issue Number	9
e-ISSN	14330768
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-06-07
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Lithium-ion batteries Tin Intermetallics Composite Physical Chemistry Electrochemistry Energy Storage Characterization and Evaluation of Materials Analytical Chemistry Condensed Matter Physics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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