Electrochemical cell

Details Electrochemical cell Electrochemical cell

H - Electricity

01

M

H01M 6/16 (2006.01) H01M 4/50 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2057946

ABSTRACT An electrochemical cell precursor and method of making it are provided; and a method of making an electrochemical cell and electrodes therefor. The cell precursor comprises a housing having an anode terminal exposed to its interior. An electrolyte is in the housing for electrochemically coupling the terminal to a cathode in the housing, a cathode precursor being in the housing. The cell precursor is made by loading the electrolyte and cathode precursor into the housing, such that the anode is electrochemically coupled by the electrolyte to the cathode precursor, being electrochemically insulated therefrom. The cell andits electrodes are made by subjecting the cell precursor to a charging potentialwhereby the cathode precursor acts as a cathode. The cathode precursor comprises at least one compound of lithium, manganese and oxygen, which falls in a defined area of an isothermal slice of the Li-Mn-O phase diagram at 20°C.

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