Abstract: The present application provides a process for preparing a composite anode for a lithium ion cell comprising the steps of: (i) forming an anode slurry in a planetary mixing machine by mixing active materials, a binder and a solvent; (ii) coating the slurry over a copper foil substrate in a coating machine at a speed of 0.3-1.0 m/min; and (iii) calendering of the anode in a calendering machine at a temperature of 50-150° C. The lithium ion cell with the anode disclosed in this invention and a cathode exhibited a capacity retention of >80% at 100% depth-of-discharge at C/2-1C charge-discharge rate when tested for 2000 cycles.

Abstract: The present application relates to a hermetically sealed higher capacity lithium ion cells for various applications including space, and a method for their manufacture. In particular, the present invention provides hermetically sealed lithium ion cells of higher capacity (40-100 Ah) with very high capacity retention capability.

Abstract: The present application provides a process for preparing a composite anode for a lithium ion cell comprising the steps of: (i) forming an anode slurry in a planetary mixing machine by mixing active materials, a binder and a solvent; (ii) coating the slurry over a copper foil substrate in a coating machine at a speed of 0.3-1.0 m/min; and (iii) calendering of the anode in a calendering machine at a temperature of 50-150° C. The lithium ion cell with the anode disclosed in this invention and a cathode exhibited a capacity retention of >80% at 100% depth-of-discharge at C/2-1C charge-discharge rate when tested for 2000 cycles.

Abstract: The present application provides a process for preparing a composite cathode for a lithium ion cell comprising the steps of: (i) forming a cathode slurry in a planetary mixing machine by mixing an active material, conducting diluent and binder; (ii) coating the slurry over an aluminum foil substrate in a coating machine at a speed of 0.2-0.8 m/min; and (iii) calendering of the cathode in a calendering machine at a temperature of 50-150° C. The cathode has peel strength of greater than 200 gf/cm and moisture content less than 350 ppm. The lithium ion cell with the cathode disclosed in this invention and a graphite anode exhibited a capacity retention of >80% at 100% depth-of-discharge at C/2?1C charge-discharge rate when tested for 2000 cycles.

Abstract: The present application relates to a hermetically sealed higher capacity lithium ion cells for various applications including space, and a method for their manufacture. In particular, the present invention provides hermetically sealed lithium ion cells of higher capacity (40-100 Ah) with very high capacity retention capability.