Current collector for secondary battery and method for manufacturing same
AssigneeLillem Co.,Ltd.
InventorsSung Min PARK, Sungwook MOON, Kyudong HAN
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Abstract
The present invention relates to a current collector for a secondary battery and a method of preparing the same, and more specifically, comprises a conductive substrate comprising a first metal; and a coating layer coated on a surface of the conductive substrate. The coating layer comprises a second metal, carbon (C), phosphorus (P), and oxygen (O), and the second metal is different from the first metal, and a first water contact angle (A) of a surface of the coating layer is 1° to 45°.
Claims18
A current collector for a secondary battery comprising:
- a conductive substrate comprising a first metal;
- and
- a coating layer coated on a surface of the conductive substrate,
- wherein the coating layer comprises a second metal, carbon (C), phosphorus (P), and oxygen (O), and the second metal is different from the first metal, and a first water contact angle (A) of a surface of the coating layer is 1° to 45°.
A current collector for a secondary battery comprising:
- a conductive substrate comprising a first metal;
- and
- a coating layer coated on a surface of the conductive substrate,
- wherein the coating layer comprises a second metal, carbon (C), phosphorus (P), and oxygen (O);
- the second metal is different from the first metal;
- surface of the coating layer has a first water contact angle (A);
- the surface of the conductive substrate has a second water contact angle (B);
- and difference (B−A) between the second water contact angle (B) and the first water contact angle (A) is 10° to 140°.
A method of preparing a current collector for a secondary battery, comprising:
- adding a metal compound, an inorganic acid, an organic acid, and a first conductive agent into a first solvent to prepare a coating composition;
- and
- coating the coating composition on a surface of a conductive substrate to form a coating layer,
- wherein the conductive substrate comprises a first metal,
- a second metal of the metal compound is different from the first metal, and
- surface of the coating layer has a first water contact angle (A) of 1° to 45°.
Dependencies are inferred from the claim text.