07261979 is referenced by 19 patents and cites 101 patents.

A high capacity, high charge rate lithium secondary cell includes a high capacity lithium-containing positive electrode in electronic contact with a positive electrode current collector, said current collector in electrical connection with an external circuit, a high capacity negative electrode in electronic contact with a negative electrode current collector, said current collector in electrical connection with an external circuit, a separator positioned between and in ionic contact with the cathode and the anode, and an electrolyte in ionic contact with the positive and negative electrodes, wherein the total area specific impedance for the cell and the relative area specific impedances for the positive and negative electrodes are such that, during charging at greater than or equal to 4C, the negative electrode potential is above the potential of metallic lithium. The current capacity per unit area of the positive and negative electrodes each are at least 3 mA-h/cm2, the total area specific impedance for the cell is less than about 20 Ω-cm2, and the positive electrode has an area specific impedance r1 and the negative electrode has an area specific impedance r2, and wherein the ratio of r1 to r2 is at least about 10.

Title
Lithium secondary cell with high charge and discharge rate capability
Application Number
11/76556
Publication Number
7261979 (B2)
Application Date
March 9, 2005
Publication Date
August 28, 2007
Inventor
Gilbert N Riley Jr
Marlborough
MA, US
Yet Ming Chiang
Framingham
MA, US
Andrew C Chu
Cambridge
MA, US
Antoni S Gozdz
Marlborough
MA, US
Agent
Wilmer Cutler Pickering Hale and Dorr
Assignee
A123 Systems
MA, US
IPC
H01M 4/58
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