Peer-Reviewed Journal Details
Mandatory Fields
Mullane, E,Kennedy, T,Geaney, H,Dickinson, C,Ryan, KM
2013
January
Chemistry Of Materials
Synthesis of Tin Catalyzed Silicon and Germanium Nanowires in a Solvent-Vapor System and Optimization of the Seed/Nanowire Interface for Dual Lithium Cycling
Published
()
Optional Fields
nanowire silicon germanium tin catalyst energy storage lithium battery anodes LI-ION BATTERIES SI NANOWIRES MOLTEN GALLIUM GE NANOWIRES HIGH-YIELD GROWTH PERFORMANCE CAPACITY ANODES ELECTRODES
25
1816
1822
Silicon and germanium nanowires are grown in high density directly from a tin layer evaporated on stainless steel. The nanowires are formed in low cost glassware apparatus using the vapor phase of a high boiling point organic solvent as the growth medium. HRTEM, DFSTEM, EELS, and EDX analysis show the NWs are single crystalline with predominant < 111 > growth directions Investigation of the seed/nanowire interface shows that in the case of Si an amorphous carbon interlayer occurs that can be removed by modifying the growth conditions Electrochemical data shows that both the tin metal catalyst and the semiconductor nanowire reversibly cycle with lithium when the interface between the crystalline phases of the metal and semiconductor is abrupt The dually active nanowire arrays were shown to exhibit capacities greater than 1000 mAh.g(-1) after 50 charge/discharge cycles.
10.1021/cm400367v
Grant Details