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US 10,763,513 B2Granted
Current collector, electrode plate including the same and battery
AssigneeContemporary Amperex Technology Co., Limited
InventorsChengdu Liang, Huafeng Huang, Qisen Huang
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Abstract
The present disclosure provides a current collector, an electrode plate, and a battery. The current collector includes an insulation layer, a conductive layer and at least one protective layer. The insulation layer is used to support the conductive layer. The conductive layer is used to support an electrode active material layer and located above at least one surface of the insulation layer. The conductive layer has a thickness of D2 satisfying 300 nm≤D2≤2 μm. The at least one protective layer is arranged on at least one surface of the conductive layer.
Claims20
A current collector, comprising:
- an insulation layer, a conductive layer, a first protective layer and a second protective layer,
- wherein the insulation layer is used to support the conductive layer,
- wherein the conductive layer is used to support an electrode active material layer and located above at least one surface of the insulation layer, and the conductive layer has a thickness of D2 satisfying 300 nm≤D2≤2 μm, and
- wherein the first protective layer is arranged on a surface of the conductive layer facing towards the insulation layer, and the first protective layer is made of a material selected from a group consisting of metal, metal oxide, conductive carbon, or combinations thereof, the metal is selected from a group consisting of nickel, chromium, nickel-based alloy, copper-based alloy, or combinations thereof, and the metal oxide is selected from a group consisting of aluminum oxide, cobalt oxide, chromium oxide, nickel oxide, or combinations thereof, and the conductive carbon is selected from a group consisting of carbon black, carbon nanotube, acetylene black, graphene, or combinations thereof,
- the second protective layer is arranged on a surface of the conductive layer facing away from the insulation layer, the second protective layer is made of a material selected from a group consisting of metal, metal oxide, conductive carbon, or combinations thereof, the metal is selected from a group consisting of nickel, chromium, nickel-based alloy, copper-based alloy, or combinations thereof, and the metal oxide is selected from a group consisting of aluminum oxide, cobalt oxide, chromium oxide, nickel oxide, or combinations thereof, and the conductive carbon is selected from a group consisting of carbon black, carbon nanotube, acetylene black, graphene, or combinations thereof,
- wherein the first protective layer has a thickness of D3′, the second protective layer has a thickness of D3, the thickness D3 of the second protective layer is larger than the thickness D3′ of the first protective layer, and 1/2 D3≤D3′≤4/5 D3.
3 more elements
An electrode plate, comprising a current collector and an electrode active material layer formed on a surface of the current collector,
- wherein the current collector, comprises:
- an insulation layer, a conductive layer, a first protective layer and a second protective layer,
- wherein the insulation layer is used to support the conductive layer,
- wherein the conductive layer is used to support the electrode active material layer and located above at least one surface of the insulation layer, and the conductive layer has a thickness of D2 satisfying 300 nm ≤D2≤2 μm, and
- wherein the first protective layer is arranged on a surface of the conductive layer facing towards the insulation layer, and the first protective layer is made of a material selected from a group consisting of metal, metal oxide, conductive carbon, or combinations thereof, the metal is selected from a group consisting of nickel, chromium, nickel-based alloy, copper-based alloy, or combinations thereof, and the metal oxide is selected from a group consisting of aluminum oxide, cobalt oxide, chromium oxide, nickel oxide, or combinations thereof, and the conductive carbon is selected from a group consisting of carbon black, carbon nanotube, acetylene black, graphene, or combinations thereof,
- the second protective layer is arranged on a surface of the conductive layer facing away from the insulation layer, the second protective layer is made of a material selected from a group consisting of metal, metal oxide, conductive carbon, or combinations thereof, the metal is selected from a group consisting of nickel, chromium, nickel-based alloy, copper-based alloy, or combinations thereof, and the metal oxide is selected from a group consisting of aluminum oxide, cobalt oxide, chromium oxide, nickel oxide, or combinations thereof, and the conductive carbon is selected from a group consisting of carbon black, carbon nanotube, acetylene black, graphene, or combinations thereof,
- wherein the first protective layer has a thickness of D3′, the second protective layer has a thickness of D3, the thickness D3 of the second protective layer is larger than the thickness D3′ of the first protective layer, and 1/2 D3≤D3′≤4/5 D3.
4 more elements
A battery, comprising a positive electrode plate, a separator, and a negative electrode plate, wherein the positive electrode plate and/or the negative electrode plate is an electrode plate,
- wherein the electrode plate comprises a current collector and an electrode active material layer formed on a surface of the current collector,
- wherein the current collector, comprises:
- an insulation layer, a conductive layer, a first protective layer and a second protective layer,
- wherein the insulation layer is used to support the conductive layer,
- wherein the conductive layer is used to support the electrode active material layer and located above at least one surface of the insulation layer, and the conductive layer has a thickness of D2 satisfying 300 nm≤D2≤2 μm, and
- wherein the first protective layer is arranged on a surface of the conductive layer facing towards the insulation layer, and the first protective layer is made of a material selected from a group consisting of metal, metal oxide, conductive carbon, or combinations thereof, the metal is selected from a group consisting of nickel, chromium, nickel-based alloy, copper-based alloy, or combinations thereof, and the metal oxide is selected from a group consisting of aluminum oxide, cobalt oxide, chromium oxide, nickel oxide, or combinations thereof, and the conductive carbon is selected from a group consisting of carbon black, carbon nanotube, acetylene black, graphene, or combinations thereof,
- the second protective layer is arranged on a surface of the conductive layer facing away from the insulation layer, the second protective layer is made of a material selected from a group consisting of metal, metal oxide, conductive carbon, or combinations thereof, the metal is selected from a group consisting of nickel, chromium, nickel-based alloy, copper-based alloy, or combinations thereof, and the metal oxide is selected from a group consisting of aluminum oxide, cobalt oxide, chromium oxide, nickel oxide, or combinations thereof, and the conductive carbon is selected from a group consisting of carbon black, carbon nanotube, acetylene black, graphene, or combinations thereof,
- wherein the first protective layer has a thickness of D3′, the second protective layer has a thickness of D3, the thickness D3 of the second protective layer is larger than the thickness D3′ of the first protective layer, and 1/2 D3≤D3′≤4/5 D3.
5 more elements
Dependencies are inferred from the claim text.