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Electrodeposited copper foil for Lithium-ion secondary battery negative electrode current collector “NC-WS”

This is adopted to consumer batteries for such as Smartphone, and to automotive batteries for xEV and others, as the electrodeposited copper foil for Lithium-ion secondary battery negative electrode current collector. Especially we are proud of the excellent achievements in the field of the automotive battery.

Due to the excellent balance of strength and flexibility as a copper foil, the copper foil can follow the expansion and shrinkage of the electrode material during charging and discharging. Therefore it is difficult to be broken and then contributing to the longer life of the battery.

Also, the foil is excellent in smoothness and small in variation of foil thickness, and it is possible to uniformly control the active material thickness which affects the battery output characteristics. Then, as a negative electrode material used in high power batteries for HEV and in high capacity batteries for EV, the foil is highly evaluated by automotive battery manufacturers.

Feature

  • Excellent in the balance of strength and flexibility.
  • Excellent in smoothness on both surfaces.
  • Excellent in heat resistance.
  • Small in variability of the foil thickness.

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