The present invention relates to a polymer-sulfur copolymer, a preparation method thereof, and a lithium-sulfur battery including the same. In the case of the polymer-sulfur copolymer according to the present invention, since the carrier is polymerized, there is no possibility that the carrier is eluted, and since the sulfur is covalently bonded to the polymer and uniformly distributed in a certain size in the copolymer, when used as a positive electrode active material for the lithium-sulfur battery, the problem of elution of the polysulfide can be improved. In addition, the polymer-sulfur copolymer according to the present invention has a high sulfur impregnation amount, thereby making it possible to realize a high capacity battery.

The present invention relates to a polymer-sulfur copolymer, a preparation method thereof, and a lithium-sulfur battery including the same. In the case of the polymer-sulfur copolymer according to the present invention, since the carrier is polymerized, there is no possibility that the carrier is eluted, and since the sulfur is covalently bonded to the polymer and uniformly distributed in a certain size in the copolymer, when used as a positive electrode active material for the lithium-sulfur battery, the problem of elution of the polysulfide can be improved. In addition, the polymer-sulfur copolymer according to the present invention has a high sulfur impregnation amount, thereby making it possible to realize a high capacity battery.

An object of the present invention is to provide a lithium-ion secondary battery having a large charge and discharge capacity and excellent cycle characteristics irrespective of kind and shape of a current collector. The lithium-ion secondary battery comprises an electrode comprising a primer layer for protecting a current collector and a crosslinking agent layer comprising a compound being capable of crosslinking an aqueous binder contained in the primer layer, the both layers being disposed between a current collector and an active material layer comprising a sulfur-based active material.

An object of the present invention is to provide a lithium-ion secondary battery having a large charge and discharge capacity and excellent cycle characteristics irrespective of kind and shape of a current collector. The lithium-ion secondary battery comprises an electrode comprising a primer layer for protecting a current collector and a crosslinking agent layer comprising a compound being capable of crosslinking an aqueous binder contained in the primer layer, the both layers being disposed between a current collector and an active material layer comprising a sulfur-based active material.

This invention relates to polymer-based electrodes comprising at least one layer containing: a continuous, solid and porous electroactive polymer material, and liquid electrolyte present in the pores of the electroactive polymer material. As a result of the modified morphology of the polymer layer thin-film charge-storage devices using these polymer-based electrodes exhibit improved charge-storage and current output and enable manufacturing of a gradual continuum between batteries and supercapacitors. In addition, the invention relates to methods of producing the above polymer-based electrodes and thin-film charge-storage devices.

This invention relates to polymer-based electrodes comprising at least one layer containing: a continuous, solid and porous electroactive polymer material, and liquid electrolyte present in the pores of the electroactive polymer material. As a result of the modified morphology of the polymer layer thin-film charge-storage devices using these polymer-based electrodes exhibit improved charge-storage and current output and enable manufacturing of a gradual continuum between batteries and supercapacitors. In addition, the invention relates to methods of producing the above polymer-based electrodes and thin-film charge-storage devices.

A cathode electrode material and a lithium sulfur battery are disclosed. The cathode electrode material includes a sulfur containing cathode active material, a conducting agent, and a cathode binder. The cathode binder includes a polymer obtained by polymerizing a dianhydride monomer with a diamine monomer. The lithium sulfur battery includes an anode electrode, an electrolyte, and a cathode electrode.

A prelithiated and surface-stabilized anode active material for use in a lithium battery, comprising a protected anode active material particle comprising a surface-stabilizing layer embracing a core particle, wherein the surface-stabilizing layer comprises a lithium- or sodium-containing species chemically bonded to the core particle and the lithium- or sodium-containing species is selected from Li.sub.2CO.sub.3, Li.sub.2O, Li.sub.2C.sub.2O.sub.4, LiOH, LiX, ROCO.sub.2Li, HCOLi, ROLi, (ROCO.sub.2Li).sub.2, (CH.sub.2OCO.sub.2Li).sub.2, Li.sub.2S, Li.sub.xSO.sub.y, Li.sub.4B, Na.sub.4B, Na.sub.2CO.sub.3, Na.sub.2O, Na.sub.2C.sub.2O.sub.4, NaOH, NaiX, ROCO.sub.2Na, HCONa, RONa, (ROCO.sub.2Na).sub.2, (CH.sub.2OCO.sub.2Na).sub.2, Na.sub.2S, Na.sub.xSO.sub.y, or a combination thereof, wherein X=F, Cl, I, or Br, R=a hydrocarbon group, 0<x1, and 1y4; wherein the lithium- or sodium-containing species is preferably derived from an electrochemical decomposition reaction and the core particle is prelithiated to contain an amount of lithium from 1% to 100% of the maximum lithium content that can be included in the core particle of anode active material.

A prelithiated and surface-stabilized anode active material for use in a lithium battery, comprising a protected anode active material particle comprising a surface-stabilizing layer embracing a core particle, wherein the surface-stabilizing layer comprises a lithium- or sodium-containing species chemically bonded to the core particle and the lithium- or sodium-containing species is selected from Li.sub.2CO.sub.3, Li.sub.2O, Li.sub.2C.sub.2O.sub.4, LiOH, LiX, ROCO.sub.2Li, HCOLi, ROLi, (ROCO.sub.2Li).sub.2, (CH.sub.2OCO.sub.2Li).sub.2, Li.sub.2S, Li.sub.xSO.sub.y, Li.sub.4B, Na.sub.4B, Na.sub.2CO.sub.3, Na.sub.2O, Na.sub.2C.sub.2O.sub.4, NaOH, NaiX, ROCO.sub.2Na, HCONa, RONa, (ROCO.sub.2Na).sub.2, (CH.sub.2OCO.sub.2Na).sub.2, Na.sub.2S, Na.sub.xSO.sub.y, or a combination thereof, wherein X=F, Cl, I, or Br, R=a hydrocarbon group, 0<x1, and 1y4; wherein the lithium- or sodium-containing species is preferably derived from an electrochemical decomposition reaction and the core particle is prelithiated to contain an amount of lithium from 1% to 100% of the maximum lithium content that can be included in the core particle of anode active material.

A prelithiated and surface-stabilized anode active material for use in a lithium battery, comprising a protected anode active material particle comprising a surface-stabilizing layer embracing a core particle, wherein the surface-stabilizing layer comprises a lithium- or sodium-containing species chemically bonded to the core particle and the lithium- or sodium-containing species is selected from Li.sub.2CO.sub.3, Li.sub.2O, Li.sub.2C.sub.2O.sub.4, LiOH, LiX, ROCO.sub.2Li, HCOLi, ROLi, (ROCO.sub.2Li).sub.2, (CH.sub.2OCO.sub.2Li).sub.2, Li.sub.2S, Li.sub.xSO.sub.y, Li.sub.4B, Na.sub.4B, Na.sub.2CO.sub.3, Na.sub.2O, Na.sub.2C.sub.2O.sub.4, NaOH, NaiX, ROCO.sub.2Na, HCONa, RONa, (ROCO.sub.2Na).sub.2, (CH.sub.2OCO.sub.2Na).sub.2, Na.sub.2S, Na.sub.xSO.sub.y, or a combination thereof, wherein X=F, Cl, I, or Br, R=a hydrocarbon group, 0<x1, and 1y4; wherein the lithium- or sodium-containing species is preferably derived from an electrochemical decomposition reaction and the core particle is prelithiated to contain an amount of lithium from 1% to 100% of the maximum lithium content that can be included in the core particle of anode active material.