Electrochemical characteristics of nc-Si/SiC composite for anode electrode of lithium ion batteries
- Electrochemical characteristics of nc-Si/SiC composite for anode electrode of lithium ion batteries
- Bup Ju Jeon; 이중기
- nc-Si/SiC composite; Nano scaled silicon; Plasma torch; Lithium ion secondary
- Issue Date
- Journal of alloys and compounds
- VOL 590, 254-259
- nc-Si/SiC composite particles were prepared as an anode material for lithium ion batteries using a plasma
jet with DC arc discharge. The composition of the nc-Si/SiC composite particles was controlled by setting
the mole ratio of CH4 and SiH4 precursor gases. X-ray diffraction, TEM images, and Raman shift analyses
revealed that the synthesized nc-Si/SiC composite particles comprised a construction of nano-nocaled
structure with crystalline phases of active silicon, highly disordered amorphous carbon of graphite and
crystalline phases of b-SiC. In the experimental range examined, the nc-Si/SiC composite particles
showed good coulombic efficiency in comparison with particles high Si.Si bonding content due to the
interplay of particles with a small proportion of carbon and the buffering effect against volume expansion
by structural stabilization, and played a role as retarding media for the rapid electrochemical reactions of the SiC crystal against lithium.
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