NDLI: Microstructures and electrochemical properties of a SiO$_{1.39}$-C composite for a lithium-ion secondary battery

Content Provider	Springer Nature Link
Author	Cho, Churl Hee Cheon, Jung Hoon Lee, Jin Seok Kim, Jun Soo Jang, Bo Yun
Copyright Year	2013
Abstract	SiO$_{1.39}$ nanoparticles synthesized by using an evaporation and condensation process were composited with phenol resin and conducting carbon (C), and their microstructures and electrochemical properties were investigated. A dense, micro-sized SiO$_{1.39}$-C composite was synthesized to prevent capacity fading of the SiO$_{ x }$ nanoparticles. To densify and coarsen this composite, we carried out pelletizing, annealing and crushing of the sample. The electrical conductivity was also improved by the composition without any structural change. Crushed particles were used as an anode material for a Li-ion battery, and its cyclic performance was evaluated. By composition, the coulombic efficiency was observed to increase from 93.6 to 97.5% at the 5$^{ th }$ cycle, and it continued increasing with each additional cycle. For the composite annealed at 1,000 °C in a 4-vol.% H$_{2}$/Ar atmosphere, the specific capacity and the coulombic efficiency at the 20$^{ th }$ cycle were measured as 426 mAhg$^{−1}$ and 99.7%, respectively.
Starting Page	1119
Ending Page	1124
Page Count	6
File Format	PDF
ISSN	03744884
Journal	Journal of the Korean Physical Society
Volume Number	62
Issue Number	8
e-ISSN	19768524
Language	English
Publisher	The Korean Physical Society
Publisher Date	2013-05-08
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Composite Anode Theoretical, Mathematical and Computational Physics Electrochemistry Microstructure SiO$_{ x }$-C Physics Particle and Nuclear Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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