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    Spinel LiMn 2 O 4 Nanorods as Lithium Ion Battery Cathodes

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    Type
    Article
    Authors
    Kim, Do Kyung
    Muralidharan, P.
    Lee, Hyun-Wook
    Ruffo, Riccardo
    Yang, Yuan
    Chan, Candace K.
    Peng, Hailin
    Huggins, Robert A.
    Cui, Yi cc
    Date
    2008-11-12
    Permanent link to this record
    http://hdl.handle.net/10754/599695
    
    Metadata
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    Abstract
    Spinel 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.
    Citation
    Kim 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.
    Sponsors
    The 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.
    Publisher
    American Chemical Society (ACS)
    Journal
    Nano Letters
    DOI
    10.1021/nl8024328
    PubMed ID
    18826287
    ae974a485f413a2113503eed53cd6c53
    10.1021/nl8024328
    Scopus Count
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