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Spinel LiMn2O4 Nanorods as Lithium Ion Battery Cathodes
Abstract
Spinel LiMn2O4 is a low-cost, environmentally friendly, and highly abundant material for Li-ion battery cathodes. Here, we report the hydrothermal synthesis of single-crystalline beta-MnO2 nanorods and their chemical conversion into free-standing single-crystalline LiMn2O4 nanorods using a simple solid-state reaction. The LiMn2O4 nanorods have an average diameter of 130 nm and length of 1.2 microm. Galvanostatic battery testing showed that LiMn2O4 nanorods have a high charge storage capacity at high power rates compared with commercially available powders. More than 85% of the initial charge storage capacity was maintained for over 100 cycles. The structural transformation studies showed that the Li ions intercalated into the cubic phase of the LiMn2O4 with a small change of lattice parameter, followed by the coexistence of two nearly identical cubic phases in the potential range of 3.5 to 4.3 V.
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Metadata
- Authors
- Kim, D. K., Muralidharan, P., Lee, H.-W., Ruffo, R., Yang, Y., Chan, C. K., Peng, H., Huggins, R. A., & Cui, Y.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-10-01
- Volume
- 8
- Issue
- 11
- Pages
- 3948-3952
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2037834969
- Cited by
- 627
- References
- 0
- FWCI
- 27.79
- Type
- journal article
- Language
- en
- Open access
- closed
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