Electrodes with High Power and High Capacity for Rechargeable Lithium Batteries
Kisuk Kang(State University of New York), Ying Shirley Meng(State University of New York), Julien Bréger(State University of New York), Clare P. Grey(State University of New York), Gerbrand Ceder(State University of New York)
Cited by 2,622
Abstract
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(Ni(0.5)Mn(0.5))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.
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