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Solution-Grown Silicon Nanowires for Lithium-Ion Battery Anodes

Journal Article · · ACS Nano
DOI:https://doi.org/10.1021/nn901409q· OSTI ID:1064794
 [1];  [2];  [3];  [2];  [1]
  1. Stanford Univ., CA (United States)
  2. Univ. of Texas, Austin, TX (United States)
  3. Sp2 Carbon, Morgan Hill, CA (United States)
Composite electrodes composed of silicon nanowires synthesized using the supercritical fluid-liquid-solid (SFLS) method mixed with amorphous carbon or carbon nanotubes were evaluated as Li-ion battery anodes. Carbon coating of the silicon nanowires using the pyrolysis of sugar was found to be crucial for making good electronic contact to the material. Using multiwalled carbon nanotubes as the conducting additive was found to be more effective for obtaining good cycling behavior than using amorphous carbon. Reversible capacities of 1500 mAh/g were observed for 30 cycles.
Research Organization:
Energy Frontier Research Centers (EFRC); Understanding Charge Separation and Transfer at Interfaces in Energy Materials (CST)
Sponsoring Organization:
USDOE SC Office of Basic Energy Sciences (SC-22)
DOE Contract Number:
SC0001091
OSTI ID:
1064794
Journal Information:
ACS Nano, Journal Name: ACS Nano Journal Issue: 3 Vol. 4
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English

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