CATHODE CURRENT COLLECTOR FOR ELECTRICAL ENERGY STORAGE DEVICE AND METHOD FOR MANUFACTURING THE SAME
원문보기
IPC분류정보
국가/구분
United States(US) Patent
공개
국제특허분류(IPC7판)
H01M-004/66
C25D-007/06
H01M-004/62
출원번호
US-0348162
(2012-01-11)
공개번호
US-0101902
(2013-04-25)
우선권정보
KR-10-2011-0107558 (2011-10-20)
발명자
/ 주소
Son, Sam Ick
Ryu, Hee Yeon
Jin, Dae Gun
출원인 / 주소
HYUNDAI MOTOR COMPANY
인용정보
피인용 횟수 :
0인용 특허 :
0
초록▼
Disclosed is a cathode current collector for an electrical energy storage device and a method for manufacturing the same, which improves adhesion between a current collector and an electrode material and provide a high reaction surface area, thereby improving the performance of the electrical energy
Disclosed is a cathode current collector for an electrical energy storage device and a method for manufacturing the same, which improves adhesion between a current collector and an electrode material and provide a high reaction surface area, thereby improving the performance of the electrical energy storage. In particular, a first alumina film is formed on the surface of an aluminum foil using an anodic oxidation process. Next, the first alumina film formed on a surface of the aluminum foil is removed through etching and a second alumina film is formed on the surface of the aluminum foil, from which the first alumina film is removed, using the anodic oxidation process again. Subsequently, a carbon layer is coated on a surface of the aluminum foil on which the second alumina film is formed.
대표청구항▼
1. A method for manufacturing a cathode current collector, the method comprising: forming a first alumina film on a surface of an aluminum foil using an anodic oxidation process;removing the first alumina film formed on the surface of the aluminum foil through etching;forming a second alumina film o
1. A method for manufacturing a cathode current collector, the method comprising: forming a first alumina film on a surface of an aluminum foil using an anodic oxidation process;removing the first alumina film formed on the surface of the aluminum foil through etching;forming a second alumina film on a surface of the aluminum foil, from which the first alumina film is removed, using the anodic oxidation process; andcoating a carbon layer on a surface of the aluminum foil on which the second alumina film is formed. 2. The method of claim 1, further comprising, prior to forming of the second alumina film, washing the aluminum foil, from which the first alumina film is removed, with deionized water and drying the resulting aluminum foil in a preheated oven. 3. A cathode current collector for an electrical energy storage device, the cathode current collector comprising: an aluminum foil layer having a high specific surface area on which an alumina film having a nanoporous structure is formed; anda conductive carbon layer coated on a surface of the aluminum foil layer. 4. The cathode current collector of claim 3 wherein the nanoporous structure is a nano-honeycomb structure 5. A method for manufacturing a cathode for an electrical energy storage device, the method comprising: forming a first alumina film on a surface of an aluminum foil using an anodic oxidation process;removing the first alumina film formed on the surface of the aluminum foil by etching;forming a second alumina film on the surface of the aluminum foil, from which the first alumina film is removed, using the anodic oxidation process;coating a carbon layer on the surface of the aluminum foil on which the second alumina film is formed; andcoating a cathode slurry on the surface of the carbon layer. 6. A cathode for an electrical energy storage device, the cathode comprising: a cathode current collector including an aluminum foil layer having a high specific surface area, on which an alumina film having a nanoporous structure is formed, and a conductive carbon layer coated on a surface of the aluminum foil layer; anda cathode material layer coated on a surface of the cathode current collector, the cathode material layer including a cathode active material, a conductive material, and a binder. 7. The cathode current collector of claim 6, wherein the nanoporous structure is a nano-honeycomb structure. 8. An electrical energy storage device comprising a cathode, the cathode including: a cathode current collector having an aluminum foil layer with a high specific surface area, on which an alumina film with a nanoporous structure is formed, and a conductive carbon layer coated on a surface of the aluminum foil layer; anda cathode material layer coated on a surface of the cathode current collector, the cathode material layer including a cathode active material, a conductive material, and a binder. 9. The electrical energy storage device of claim 8, wherein the nanoporous structure is a nano-honeycomb structure.
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