Germanium Nanotubes Prepared by Using the Kirkendall Effect as Anodes for High-Rate Lithium Batteries
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- Germanium Nanotubes Prepared by Using the Kirkendall Effect as Anodes for High-Rate Lithium Batteries
- Park, Mi-Hee; Cho, YongHyun; Kim, Kitae; Kim, Jeyoung; Liu, Meilin; Cho, Jaephil
- Capacity fading; Core-shell; High rate; High rate capability; High yield; Kirkdendall effect; Kirkendall effects; Lithium-ion cells; Reversible capacity
- Issue Date
- WILEY-V C H VERLAG GMBH
- ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.50, no.41, pp.9647 - 9650
- 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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