Electrolytic copper foil, method for manufacturing the same, and anode for lithium secondary battery of high capacity
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United States of America Patent
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Apr 2, 2024
Grant Date -
Jun 3, 2021
app pub date -
Aug 27, 2018
filing date -
Aug 27, 2018
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Abstract
The present invention relates to a copper foil current collector having superior adhesion to an active material of a Li secondary battery. The electrolytic copper foil of the present invention having a first surface and a second surface comprises: a first protective layer at the first surface; a second protective layer at the second surface; and a copper film between the first and second protective layers, wherein an oxygen-containing part at the second surface has a thickness (OT) of not less than 1.5 nm. According to the present invention, an electrolytic copper foil current collector for a Li secondary battery, which has low electric resistance and high adhesion to an active material, can be provided.
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