Kcf Technologies Co., Ltd.

Soo-Yeol Kim

Dae-young Kim

Seung-Min Kim

Jeong-Gil Lee

An electrolytic copper foil for a lithium secondary battery, which is applied as a negative electrode current collector of a lithium secondary battery, wherein when a correlation between a thermal treatment temperature of the electrolytic copper foil for a lithium secondary battery, which corresponds to a variable x, and an elongation increment ratio of the electrolytic copper foil for a lithium secondary battery, which corresponds to a variable y, is expressed as y=ax+b (100&#x2264;x&#x2264;200) on an x-y two-dimensional graph, the 'a' value is in the range of 0.0009 to 0.0610.

Electrolytic copper foil for lithium secondary battery and lithium secondary battery comprising the same

An electrolytic copper foil for a lithium secondary battery, which is applied as a negative electrode current collector of a lithium secondary battery, wherein after a thermal treatment at 300&#xb0; C. for 30 minutes, the electrolytic copper foil for a lithium secondary battery has an elongation of 5% to 30%.

Growing community of inventors

Jeongeup-si, South Korea

Soo-Yeol Kim