Electrodes with high power and high capacity for rechargeable lithium batteries

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New applications such as hybrid electric vehicles and power backup require rechargeable batteries that combine high energy density with high charge and discharge rate capability. Using ab initio computational modeling, we identified useful strategies to design higher rate battery electrodes and tested them on lithium nickel manganese oxide [Li(Ni0.5Mn0.5)O-2], a safe, inexpensive material that has been thought to have poor intrinsic rate capability. By modifying its crystal structure, we obtained unexpectedly high rate-capability, considerably better than lithium cobalt oxide (LiCoO2), the current battery electrode material of choice.
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Issue Date
2006-02
Language
English
Article Type
Article
Keywords

ION BATTERIES; INSERTION MATERIAL; CATHODE MATERIALS; CHEMISTRY; LINI1/2MN1/2O2; DIFFUSION; STABILITY; BEHAVIOR; OXIDES; CHARGE

Citation

SCIENCE, v.311, no.5763, pp.977 - 980

ISSN
0036-8075
DOI
10.1126/science.1122152
URI
http://hdl.handle.net/10203/88458
Appears in Collection
MS-Journal Papers(저널논문)
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