US 12,170,375 B2
Copper foil having excellent heat resistance property
Yao-Sheng Lai, Taipei (TW); and Jui-Chang Chou, Taipei (TW)
Assigned to CHANG CHUN PETROCHEMICAL CO., LTD., Taipei (TW)
Filed by CHANG CHUN PETROCHEMICAL CO., LTD., Taipei (TW)
Filed on Oct. 30, 2019, as Appl. No. 16/668,735.
Prior Publication US 2021/0135233 A1, May 6, 2021
Int. Cl. H01M 4/66 (2006.01); C25D 1/04 (2006.01); C25D 3/04 (2006.01); C25D 3/38 (2006.01); H01M 4/13 (2010.01); H01M 10/0525 (2010.01); H01M 50/531 (2021.01)
CPC H01M 4/661 (2013.01) [C25D 1/04 (2013.01); C25D 3/04 (2013.01); C25D 3/38 (2013.01); H01M 4/13 (2013.01); H01M 4/667 (2013.01); H01M 10/0525 (2013.01); H01M 50/531 (2021.01)] 9 Claims
OG exemplary drawing
 
1. An electrodeposited copper foil comprising a drum side and a deposited side;
wherein each of the drum side and the deposited side of the electrodeposited copper foil have a ten-point average roughness, Rz, in the range of 1.0 μm to less than or equal to 2 μm, and each of the drum side and the deposited side of the electrodeposited copper foil further comprise a chromium coating, wherein the electrodeposited copper foil exhibits a primary weight increase of 105 wt. %, when a primary temperature (T105 wt %) is reached during thermal gravimetric analysis (TGA), wherein the primary temperature (T105 wt %), is in a range of 350° C. to 501° C., and
wherein the TGA comprises heating the electrodeposited copper foil at a rate of 5° C./min and an air flow at a rate of 95 mL/min.