NOVELTY - Electrochemical cell comprises at least one multilayer component including a positive electrode film containing a sulfur as an electrochemically active material, a negative electrode film containing lithium as an electrochemically active material and a solid electrolyte film arranged between the positive and negative electrode films. The solid electrolyte film comprises at least one lithium salt and at least one polymer.    USE - The electrochemical cell is useful in high-energy rechargeable batteries for electric vehicle and its ubiquitous computing device (all claimed).    ADVANTAGE - The electrochemical cell provides improved cycle life, cycle efficiency, discharging capacity and security to the battery, and reduces the production cost of the battery.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) fabricating the electrochemical cell, comprising providing the positive electrode film, the solid electrolyte film and the negative electrode film, and stacking and laminating positive electrode film, the solid electrolyte film and the negative electrode film between at least two rollers;    (2) a positive electrode film comprising a material containing sulfur, a polymeric binder and a conductive carbon;    (3) a prefabricated positive electrolyte-electrode element comprising the positive electrode film and the solid electrolyte film, where the positive electrode film and the solid electrolyte film are stacked together and laminated;    (4) preparing the prefabricated positive electrolyte-electrode element, comprising mixing sulfur with conductive carbon, polymeric precursors, optionally lithium salts, inorganic compounds and/or solvents, spreading the mixture on a current collector, evaporating the solvent and polymerizing to form positive electrode film, mixing polymer precursor, lithium salts and inorganic compounds in solvents and spreading on a substrate to form an electrolyte film precursor, irradiating or heating the electrolyte film precursor to form the solid electrolyte film, and stacking and rolling the positive electrode film with the solid electrolyte film to produce the prefabricated positive electrolyte-electrode element; and    (5) a system comprising the electrochemical cell, the positive electrode film and the prefabricated positive electrolyte-electrode element.