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

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

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 cy...

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Veröffentlicht in:Angewandte Chemie International Edition 2011-10, Vol.50 (41), p.9647-9650
Hauptverfasser: Park, Mi-Hee, Cho, YongHyun, Kim, Kitae, Kim, Jeyoung, Liu, Meilin, Cho, Jaephil
Format: Artikel
Sprache:eng
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anodes
Germanium
Kirkdendall effect
Lithium
lithium battery
Nanotechnology
nanotubes
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container_end_page 9650
container_issue 41
container_start_page 9647
container_title Angewandte Chemie International Edition
container_volume 50
creator Park, Mi-Hee
Cho, YongHyun
Kim, Kitae
Kim, Jeyoung
Liu, Meilin
Cho, Jaephil
description 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 LiCoO2 cathode in a lithium‐ion cell.
doi_str_mv 10.1002/anie.201103062
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subjects anodes
Germanium
Kirkdendall effect
Lithium
lithium battery
Nanotechnology
nanotubes
title Germanium Nanotubes Prepared by Using the Kirkendall Effect as Anodes for High-Rate Lithium Batteries
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