Battery foil Business

BIOPIN applies precision coating technology to aluminum foil substrates to deliver multi-functional performance for battery current collector materials.We independently develop and formulate our proprietary conductive slurry, which is uniformly coated onto high-purity aluminum foil.Whether you require customized base foil, ultra-clean aluminum foil, or high-performance cathode current collectors for lithium-ion and sodium-ion batteries, BIOPIN can fully meet your requirements.

Compared with bare aluminum foil, carbon-coated aluminum foil boasts superior electrical conductivity and lower internal resistance. It effectively cuts interfacial contact resistance, suppresses lithium dendrite growth, greatly mitigates the risk of short circuits, and improves overall battery safety.

Specifications of carbon coated aluminum foil

Aluminum foil substrate	1060,1070,1100,1235D
Foil thickness	8-15㎛
Coating thickness	0.6-2㎛
Foil width	300-1550mm
Coating Type	Aqueous Solvent
Coating material	Carbon Black, Graphite, Resin
Coated surface	One side / Both sides
Coating density	0.21-0.7g/㎡

Application

Lujiang Manufacturing Headquarter

Our manufacturing base lies in Lujiang County, Anhui, covering 80,000 sq.m. with over 500 staff.

Equipped with professional aluminum slitting workshops and fully automatic carbon coating workshops, the factory currently operates 13 precision slitting lines and 20 carbon coating lines（upgrading to 40 coating lines by 2027–2030.）, capable of supporting nearly 100 GWh-level downstream battery production demands.

Backed by internal R&D and process centers plus expert teams, we deliver consistent high-performance current collectors for lithium battery manufacturers.