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Science 17 February 2006:
Vol. 311. no. 5763, pp. 977 - 980
DOI: 10.1126/science.1122152
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Reports

Electrodes with High Power and High Capacity for Rechargeable Lithium Batteries

Kisuk Kang,1 Ying Shirley Meng,1 Julien Bréger,2 Clare P. Grey,2 Gerbrand Ceder1*

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)O2], 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.

1 Center for Materials Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
2 Department of Chemistry, State University of New York, Stony Brook, NY 11794–3400, USA.

* To whom correspondence should be addressed. E-mail: gceder{at}mit.edu

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Fabricating Genetically Engineered High-Power Lithium-Ion Batteries Using Multiple Virus Genes.
Y. J. Lee, H. Yi, W.-J. Kim, K. Kang, D. S. Yun, M. S. Strano, G. Ceder, and A. M. Belcher (2009)
Science 324, 1051-1055
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