Abstract: Method (100) for making a cathode for secondary battery, including mixing (102) an active material and a conductive material with an electron beam curable pre-polymer so as to obtain a solvent-free mixture made of the active material, the conductive material and the pre-polymer, passing the solvent-free mixture in a Moisture Powder Sheeting device, polymerizing (108) the pre-polymer with an electron beam so as to obtain a polymerized active layer on the metallic foil, pressing (110) the polymerized active layer on the metallic foil at room temperature so as to increase the density of the polymer active layer. A composition for making a cathode for secondary battery, the composition including an active material, a conductive material and an electron beam curable pre-polymer, the composition being solvent-free. A cathode made from the composition and a secondary battery including the cathode.

Abstract: Composition includes: (A) a mixed oxide of lithium, nickel, manganese and cobalt and (B) a fluorinated anion salt of a polycationic polymer. The fluorinated anion salt of the polycationic polymer contains repeating units represented by one of formula (1) or formula (2): wherein, in the formula (1), N+ is a nitrogen atom constituting a quaternary ammonium cation, R1 and R2 being each independently a substituent containing a carbon atom bonded to the nitrogen atom, wherein, in the formula (2), R3 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.

Abstract: A method of performing a high-temperature aging process of a rechargeable cell (10) comprising an anode (12), a cathode (16), an electrolyte (22) and a separator (20), is provided. The method includes heating a solid electrolyte interface (24) formed on the anode (12) to a predetermined temperature at which a saturated ionic conductivity of the solid electrolyte interface (24) is elevated, and holding the solid electrolyte interface (24) at the predetermined temperature for a predetermined minimum time at which ionic conductivity of the SEI becomes saturated.

Abstract: A method of preparing a lithium-ion cell (10), the method including providing to an electrolyte (22) of the cell, an additive configured to improve formation of a solid electrolyte interface (24) on an anode (12), charging the cell (10) at a first predetermined charge rate (C1) up to a first predetermined voltage (V1), wherein the first predetermined voltage (V1) corresponds to a voltage at which the additive begins formation of the solid electrolyte interface (24), charging the cell (10) at a second predetermined rate (C2) to a second predetermined voltage (V2), wherein the second predetermined voltage (V2) corresponds to a voltage at which the electrolyte (22) begins formation of the solid electrolyte interface (24); and charging the cell (10) to a fully charged capacity at a third predetermined charge rate (C3), the third charge rate (C3) being greater than the second charge rate (C2).

Abstract: A method of preparing a lithium-ion cell (10), the method including providing to an electrolyte (22) of the cell, an additive configured to improve formation of a solid electrolyte interface (24) on an anode (12), charging the cell (10) at a first predetermined charge rate (C1) up to a first predetermined voltage (V1), wherein the first predetermined voltage (V1) corresponds to a voltage at which the additive begins formation of the solid electrolyte interface (24), charging the cell (10) at a second predetermined rate (C2) to a second predetermined voltage (V2), wherein the second predetermined voltage (V2) corresponds to a voltage at which the electrolyte (22) begins formation of the solid electrolyte interface (24); and charging the cell (10) to a fully charged capacity at a third predetermined charge rate (C3), the third charge rate (C3) being greater than the second charge rate (C2).

Abstract: A method of performing a high-temperature aging process of a rechargeable cell (10) comprising an anode (12), a cathode (16), an electrolyte (22) and a separator (20), is provided. The method includes heating a solid electrolyte interface (24) formed on the anode (12) to a predetermined temperature at which a saturated ionic conductivity of the solid electrolyte interface (24) is elevated, and holding the solid electrolyte interface (24) at the predetermined temperature for a predetermined minimum time at which ionic conductivity of the SEI becomes saturated.