AuthorsKim, Do Kyung
Chan, Candace K.
Huggins, Robert A.
Permanent link to this recordhttp://hdl.handle.net/10754/599695
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AbstractSpinel LiMn 2O 4 is a low-cost, environmentally friendly, and highly abundant material for Li-ion battery cathodes. Here, we report the hydrothermal synthesis of single-crystalline β-MnO 2 nanorods and their chemical conversion into free-standing single-crystalline LiMn 2O 4 nanorods using a simple solid-state reaction. The LiMn 2O 4 nanorods have an average diameter of 130 nm and length of 1.2 μm. Galvanostatic battery testing showed that LiMn 2O 4 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 LiMn 2O 4 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 4.3V. © 2008 American Chemical Society.
CitationKim DK, Muralidharan P, Lee H-W, Ruffo R, Yang Y, et al. (2008) Spinel LiMn 2 O 4 Nanorods as Lithium Ion Battery Cathodes . Nano Lett 8: 3948–3952. Available: http://dx.doi.org/10.1021/nl8024328.
SponsorsThe work is supported by the Global Climate and Energy Project at Stanford and King Abdullah University of Science and Technology. C.K.C. acknowledges support from a National Science Foundation graduate fellowship and Stanford Graduate Fellowship. D.K.K. would like to thank the SBS Foundation and Korea Research Foundation (KRF-2005-005-JO9701) for supporting his sabbatical leave.
PublisherAmerican Chemical Society (ACS)