Journal
JOURNAL OF POWER SOURCES
Volume 211, Issue -, Pages 103-107Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2012.03.066
Keywords
Tin; Tin-cobalt alloy; Nanowire; Anode; Vinylene carbonate additive; Li-ion batteries
Funding
- CR Mobility Solution System S.r.l.
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The preparation of Sn2Co3 nanowire arrays (NWs) electrogrown inside the channels of polycarbonate membranes and their characterization as anodes for Li-ion batteries both in half-cell vs. Li and in battery configuration are reported. The Sn2Co3 NW electrodes tested by deep galvanostatic charge/discharge cycles in ethylene carbonate-dimethylcarbonate (1:1) - LiPF6 1 M displayed 80% capacity retention after 200 cycles at C/2 and 30 degrees C, and a high charge and discharge rate capability at C-rate from C/3 (0.33 A/g) to 10C (10 A/g) at 30 degrees and 10 degrees C. Electrodes with the highest alloy loading delivered up to 0.6 mAh cm(-2) at C/2. The performance of these electrodes in battery configuration with LiFePO4 as cathode is also reported, as well as the effect of the vinylene carbonate additive on the charge/discharge coulombic efficiency of the Sn2Co3 NWs. (C) 2012 Elsevier B.V. All rights reserved.
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