An important application of three-layer copper stainless steel 304 nickel sheet is the anode cover and cathode cup used to make batteries in the button battery industry. In the production of both, applied materials are the first choice materials due to their unique multi-layer performance characteristics, especially for hearing aids and other electronic devices that have a growing demand for button batteries for high energy storage and micro volume performance.
Three-layer copper stainless steel 304 nickel sheet can play the role of anode current collector. Its anti-corrosion nickel layer on the surface, hard stainless core and battery chemical compatibility provided in the pure copper inside make the material applicable to mercury-free batteries.
Compared with porous electroplating materials, the nickel application layer has better durability, which makes the three-layer copper  stainless steel 304  nickel sheet application materials more suitable for making battery cups or battery cathodes. This is especially important for the corrosion and rust prevention of hearing aid materials.
 
Henan Signi  offers a range of sizes as thin as 0.004 inches and as wide as 12 inches in both standard and special application ratio materials. As the thinness of the battery decreases, the  three-layer copper stainless steel 304 nickel sheet after special pressing and tempering will be able to provide good deep drawability and strength.