NOVELTY - The method involves performing charge and discharge sequence on the electro-chemical cell. The damage or defect of primary materials (121,122) of the cell components (101,102) subjected to charge and discharge cycle is detected. The portions of damaged or defective primary materials are removed from the cell component. The cell component is comprised of primary areas (111,112) with primary material and secondary areas (131,132) from which the portions of damaged or defective primary material are removed. The secondary materials (141,142) are introduced into the secondary areas.    USE - Method for modifying electrochemical cell used for power supply for mobile information devices, tools, electrically driven automobiles e.g. hybrid or electric vehicle, automobiles with hybrid drive, and stationary energy stores (all claimed) such as buffer memory, device battery, industrial battery or starter battery.    ADVANTAGE - The functional electrochemical cell can be manufactured economically at a low energy and material expenditure. The damaged or defective material in inert gas atmosphere is removed. The remaining functional material is not exposed to the influence of atmosphere and thus not come into contact with water or oxygen. The functionality of the remaining material can be ensured. The directly usable and operable electrochemical cells can be obtained at low material expenditure and within a short time. The cross-linking is effected in order to realize material connection with the surrounding primary material. The material connection can no longer be disengaged nondestructively. The secondary material can no longer be nondestructively separated from the surrounding primary material. The recycled or reprocessed material saves the material and cost. The high porosity of the non-woven fabric enables the separator to have higher porosity, so that the separator can realize greater absorption of electrolytes. The performance of load which the electrochemical cell supplies can be improved and the energy density of electrochemical cell can be increased.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) electrochemical cell; and    (2) exchange substrate.    DESCRIPTION OF DRAWING(S) - The drawings show the schematic views of the cell component of electrochemical cell.    Cell components (101,102)    Primary areas (111,112)    Primary materials (121,122)    Secondary areas (131,132)    Secondary materials (141,142)