NDLI: Nano-porous SiO/carbon composite anode for lithium-ion batteries

Content Provider	Springer Nature Link
Author	Liu, Wei Ren Yen, Yu Chan Wu, Hung Chun Winter, Martin Wu, Nae Lih
Copyright Year	2009
Abstract	Carbon-coating of sub-μm SiO particles (d$_{max}$ = 0.36 μm, d$_{50}$ = 0.69 μm) by a fluidized-bed chemical-vapor-deposition process has produced unique nano-porous SiO/C secondary particles within which the SiO primary particles are “glued” together by carbon to form a network that possesses randomly distributed pores with sizes in the nano-meter range and a bulk porosity of >30%. Upon lithiation/delithiation cycling in an organic Li-ion electrolyte, the electrode made of the SiO/C particles exhibited reduced polarization, smaller irreversible electrode expansion, and remarkably enhanced cycling performance, as compared with that of pristine SiO particles. The reduced electrode expansion exhibited by the SiO/C electrode can be attributed to the combination of diluted SiO content and presence of pre-set voids, which could partially accommodate volume expansion arising from lithiation of the SiO primary particles. These effects render the SiO/C electrode structurally more robust than the SiO electrode against volumetric variations upon cycling.
Starting Page	1643
Ending Page	1649
Page Count	7
File Format	PDF
ISSN	0021891X
Journal	Journal of Applied Electrochemistry
Volume Number	39
Issue Number	9
e-ISSN	15728838
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-03-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Lithium ion battery Anode SiO Chemical vapor deposition Carbon coating Nano-porosity Industrial Chemistry/Chemical Engineering Physical Chemistry Electrochemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Chemical Engineering Electrochemistry

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