Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 11, Pages 9551-9558Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b12080
Keywords
flexible electrodes; Si nanowires; lithium-ion batteries; carbon cloth; subeutectic growth
Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- University of Waterloo
- Waterloo Institute for Nanotechnology
- General Motors (GM) Global Research and Development Center
- Energy Efficiency and Renewable Energy, Office of Vehicle Technologies of the U.S. Department of Energy under the Batteries for Advanced Transportation Technologies (BATT) Program [DE-ACO2-05CH11231, 7056410]
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A novel self-supported electrode with long cycling life and high mass loading was developed based on carbon-coated Si nanowires grown in situ on highly conductive and flexible carbon fabric substrates through a nickel-catalyzed one-pot atmospheric pressure chemical vapor deposition. The high-quality carbon coated Si nanowires resulted in high reversible specific capacity (similar to 3500 mA h g(-1) at 100 mA g(-1)), while the three-dimensional electrode's unique architecture leads to a significantly improved robustness and a high degree of electrode stability. An exceptionally long cydability with a capacity retention of similar to 66% over 500 cycles at 1.0 A g(-1) was achieved. The controllable high mass loading enables an electrode with extremely high areal capacity of similar to 5.0 mA h cm(-2). Such a scalable electrode fabrication technology and the high-performance electrodes hold great promise in future practical applications in high energy density lithium-ion batteries.
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