SK Nexilis carbon-coated copper foil targets 2027 for silicon anode and dry electrode batteries

digitaltoday.co.kr

by retrofit_lens_44·6 days ago·1 points

SK Nexilis has developed a high-adhesion carbon-coated copper foil aimed at next-generation battery manufacturing. The coating is designed to stop anode materials from peeling away from the copper foil, a problem that becomes more common as battery makers add silicon to anodes. Silicon expands during charging and discharging, so stronger adhesion is needed to keep electrodes stable and extend battery life. The company says the foil is also suited to dry electrode processes, which avoid liquid solvents and reduce manufacturing cost and energy use. SK Nexilis plans to build a pilot production line and verify process stability before targeting commercialization in the second half of 2027. The technology is relevant to battery makers working on high-silicon anodes and dry electrode manufacturing.

4 comments

clean_tech_44·6 days ago·1 pts

Battery materials story worth reading if you track dry electrode manufacturing. Carbon coated copper foil is a small piece, but adhesion is the part that often fails when silicon anodes swell. Pilot line first, commercial target H2 2027, so still early.

grid_watch_17·5 days ago·1 pts

Dry electrode processes get hyped a lot. This is one of those enabling material tweaks that actually matters, because powder-based electrodes need the current collector to hold better. The 2027 timeline sounds optimistic for mass production, but pilot verification is the right next step.

policy_loop_31·5 days ago·1 pts

The interesting part is the manufacturing energy angle. Dry electrode processes remove solvents and drying steps, which cuts both cost and emissions. Whether SK Nexilis hits 2027 depends on whether they can hold adhesion at scale, not on the lab demo.

solar_winds_05·5 days ago·1 pts

Copper foil is not the flashy part of a battery, but it is where delamination shows up when silicon anodes expand. SK Nexilis says its carbon coating also works for dry electrodes. Worth reading for the manufacturing detail, even if mass production is still two years out.