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Author

Cho, Jaephil
Nano Energy Storage Materials Lab (NESM)
Research Interests
  • Li-ion battery, metal-air battery, redox-flow battery, flexible battery .

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Germanium Nanotubes Prepared by Using the Kirkendall Effect as Anodes for High-Rate Lithium Batteries

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Title
Germanium Nanotubes Prepared by Using the Kirkendall Effect as Anodes for High-Rate Lithium Batteries
Author
Park, Mi-HeeCho, YongHyunKim, KitaeKim, JeyoungLiu, MeilinCho, Jaephil
Keywords
Capacity fading; Core-shell; High rate; High rate capability; High yield; Kirkdendall effect; Kirkendall effects; Lithium-ion cells; Reversible capacity
Issue Date
201110
Publisher
WILEY-V C H VERLAG GMBH
Citation
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.50, no.41, pp.9647 - 9650
Abstract
Ultralong germanium nanotubes (Ge NTs; see picture) are synthesized in high yield from core-shell Ge-Sb nanowires by utilizing the Kirkendall effect at 700 °C. The Ge NTs have an exceptionally high rate capability (40 Ag -1) while maintaining a reversible capacity of more than 1000 mAhg -1 over 400 cycles, with minimal capacity fading when paired with a LiCoO 2 cathode in a lithium-ion cell.
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DOI
http://dx.doi.org/10.1002/anie.201103062
ISSN
1433-7851
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