Electrolytic Copper Foil, Current Collector Including Same Electrolytic Copper Foil, Electrode Including Same Current Collector, Secondary Battery Including Same Electrode, And Method For Manufacturing Same
Patent No. EP3316363 (titled "Electrolytic Copper Foil, Current Collector Including Same Electrolytic Copper Foil, Electrode Including Same Current Collector, Secondary Battery Including Same Electrode, And Method For Manufacturing Same") was filed by KCF on Apr 28, 2016. The application was issued on May 11, 2022.
Patent Summary
An electrolytic copper foil for secondary batteries comprises a first surface and an opposite second surface, each having a ten-point mean roughness (RzJIS) of 2 µm or less and a peak count roughness (Rpc) of 10 to 100. Rpc is the average of values measured at three random points, defined as the number of effective peaks per 4 mm sampling length according to the steel-iron test schedule (SEP 1940). Effective peaks must rise above an upper criteria line of 0.5 µm, with at least one valley deeper than a lower criteria line of -0.5 µm between adjacent effective peaks. This configuration prevents stress concentration and ensures uniform active material coating to maintain secondary battery discharge capacity at 90% or higher.
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Date
Description
EP3316363
- Application Number
- EP16814576A
- Filing Date
- Apr 28, 2016
- Status
- No Opposition Filed Within Time Limit
- Mar 17, 2023
- Publication Date
- May 11, 2022
- External Links
- Slate, Register , Google Patents