초록 ▼

A novel and improved rechargeable, lithium-ion battery system is composed of a plurality of individual electrochemical cells having positive and negative electrodes disposed in opposite face-to-face arrangement with a porous separator containing electrolyte therebetween, and wherein the positive and

A novel and improved rechargeable, lithium-ion battery system is composed of a plurality of individual electrochemical cells having positive and negative electrodes disposed in opposite face-to-face arrangement with a porous separator containing electrolyte therebetween, and wherein the positive and negative electrodes of adjacent cells are disposed in contact respectively with opposite sides of a common current-collecting element forming a unitary bipolar structure. The negative electrode comprises a layer of carbon adhered to one side of the current-collecting element while the positive electrode comprises a layer containing a lithium transition metal oxide or sulfide compound adhered to the other opposite side of the element. The unitary bipolar structures containing the positive and negative electrodes of adjacent cells include outer peripheral, electrically-insulating seal members, preferably in the form of plastic insulating rings, which are joined together in a sealed stacked array.

대표청구항 ▼

A bipolar rechargeable lithium-ion battery comprising: a plurality of individual electrochemical cells having positive and negative electrodes disposed in opposite face-to-face arrangement with a porous separator containing electrolyte therebetween, wherein the positive and negative electrodes of ad

A bipolar rechargeable lithium-ion battery comprising: a plurality of individual electrochemical cells having positive and negative electrodes disposed in opposite face-to-face arrangement with a porous separator containing electrolyte therebetween, wherein the positive and negative electrodes of adjacent cells are disposed in electrical connection respectively with opposite sides of a common current-collecting element forming a unitary bipolar structure, said negative electrode comprising a layer of carbon adhered to one of said opposite sides of said current-collecting element and said positive electrode comprising a layer containing a lithium transition metal oxide compound adhered to the other opposite side of said element, and wherein said electrolyte comprises a lithium salt dissolved in a non-aqueous, organic solvent, and means for joining said unitary bipolar structure of adjacent cells together in a sealed stacked array.