AN ORGANIC-INORANIC COMPOSITE POROUS LAYER, A SEPERATOR AND AN ELECTRODE STRUCTURE COMPRISING THE SAME

摘要

The present invention provides an organic-inorganic composite porous layer for a lithium secondary battery, including an irreversible material, inorganic particles and a binder high molecule, which irreversibly supply a lithium ion when the first cycle of charging/discharging of the lithium secondary battery is performed. At least one inorganic particle is interconnected by the binder high molecule. The organic-inorganic composite porous layer includes gas packets formed by interstitials between the inorganic particles. An efficiency control between a positive pole and a negative pole can be achieved without an effect to weights and volumes of the positive pole and the negative pole of the secondary lithium battery.