Lankwitzer Unveils Next-Gen UV Coating for Battery Cells, Partnering with Tesla for 4680 Cell Production

As EV manufacturers pursue higher energy densities, UV coating for battery cells has emerged as a critical enabler for safer, more reliable battery systems. Lankwitzer’s latest formulation combines nanoscale silica particles with UV-curable acrylic resins, creating a 50μm-thick barrier that withstands 10G vibrations and temperature swings from -40°C to 150°C. Tesla’s 4680 cylindrical cells, now coated with this material, show a 40% reduction in thermal runaway incidents during 6C charging tests.

Nanocomposite Material Design
The coating’s core innovation lies in its crosslinked polymer network, reinforced with boron nitride nanosheets to enhance thermal insulation. This structure lowers thermal conductivity to 0.12 W/m・K, 30% better than conventional epoxy coatings, while maintaining a surface resistivity of 10^14 Ω・cm. Salt 雾 testing at Lankwitzer’s Munich lab confirmed zero corrosion after 1,500 hours, surpassing industry standards.

Manufacturing Efficiency Revolution
Lankwitzer’s UV-curing process eliminates the need for high-temperature ovens, curing the coating in just 5 seconds under 365nm LED lights. This reduces production line length by 60% and increases throughput at Tesla’s Gigafactory by 25%, with a single line now processing 300 cells per minute. The company’s AI-powered quality control system ensures coating thickness uniformity within ±1μm, cutting defect rates to 0.03%.

Sustainability and Global Expansion
The solvent-free formulation aligns with EU REACH and China’s GB 38031 safety standards, with 95% of raw materials sourced sustainably. Lankwitzer’s new Shanghai facility, set to open in Q4 2025, will produce 10 million meters of UV coating for battery cells annually, serving 40% of the global EV market.