Patent ID: 7951242
Filing Date: 2011-05-31
Classification: C23C,H01G,H01M,Y02E,Y02P,Y02T,Y10T

Abstract:
1. An apparatus for making electrodes for a cell having a first electrode and a second electrode formed from a metal current collector having an active layer formed from first particles being integral with and extending from the metal current collector and second particles connecting with the first particles, said apparatus comprising: a housing surrounding a longitudinal axis and extending to a nozzle for injecting the second particles onto the metal current collector; a rolling device positioned generally perpendicular to said longitudinal axis for moving the metal current collector relative said longitudinal axis and preventing clumping of the second particles and increasing dosing accuracy of the second particles as the second particles are applied to the metal current collector; a fluid delivery device fluidly communicating with said housing for injecting fluid under at least one pressure into said housing; an intermediate nozzle disposed in said housing about said longitudinal axis for mixing said fluid under at least one pressure with the second particles into a homogeneous mixture and heating the homogeneous mixture to partially melt the second particles thereby increasing a speed of the homogeneous mixture as said nozzle injects the homogeneous mixture to the metal current collector for forming the active layer having a porous structure.