Mesoporous Co3O4 Nanowire Arrays for Lithium Ion Batteries with High Capacity and Rate Capability

Mesoporous Co3O4 Nanowire Arrays for Lithium Ion Batteries with High Capacity and Rate Capability

We report the high capacity and rate capability of mesoporous Co3O4 nanowire (NW) arrays as anodes in Li ion batteries. At a current of 1C, the NW arrays maintain a capacity of 700 mAh/g after 20 discharge/charge cycles. When the current is increased to 50C, 50% of the capacity can be retained. With...

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Veröffentlicht in:Nano letters 2008-01, Vol.8 (1), p.265-270
Hauptverfasser: Li, Yanguang, Tan, Bing, Wu, Yiying
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Electrochemistry
Electrodes: preparations and properties
Exact sciences and technology
General and physical chemistry
Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties
Materials science
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Physics
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
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Zusammenfassung:We report the high capacity and rate capability of mesoporous Co3O4 nanowire (NW) arrays as anodes in Li ion batteries. At a current of 1C, the NW arrays maintain a capacity of 700 mAh/g after 20 discharge/charge cycles. When the current is increased to 50C, 50% of the capacity can be retained. With their ease of large area synthesis and superior electrochemical properties, these Co3O4 NW arrays will be interesting for practical Li ion batteries.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl0725906