HIGH RATE PULSED BATTERY

摘要

A lithium secondary cell includes a plurality of stacked layers. The lithium secondary cell includes a high energy, low rate positive electrode and exhibits low total cell impedance. The stacked layer includes a lithium-containing positive electrode in electronic contact with a positive electrode current collector, a negative electrode in electronic contact with a negative electrode current collector, a separator positioned between the cathode and the anode, and an electrolyte in ionic contact with the positive and negative electrodes. The positive current collector is in electrical connection with an external circuit and has a total volumetric energy density of greater than of at least about 1460 Wh/L versus lithium at C/5 rate. The negative current collector is in electrical connection with an external circuit. The total cell impedance is less than about 50mOhm at a frequency of about 1 kHz or greater and the cell is capable of providing a pulsed current of at least about 700 mA for a duration of at least about 500 µsec with a polarization of less than about 300 V. The cell may be used to drive an electronic device that is operable using a pulsed current protocol.