Lotte Energy Materials said it completed the development of nickel-plated foil for all-solid-state batteries.
It regards nickel-plated foil as a next-generation material with nickel plating on both sides of electrolytic copper foil. It provides “excellent electrical conductivity and strong resistance to corrosion”, it said, which makes it an ideal electrode current collector for sulfide-based all-solid-state batteries.
The foil can be adjusted for nickel thickness and copper foil strength according to customer requirements, it added. The nickel surface treatment enhances adhesion to active materials and maintains its original properties and functions without corrosion or discoloration due to chemical reactions. This offers high corrosion resistance, it said.
Lotte said there are few companies able to manufacture nickel-plated foil and it claims to be the first in Korea to do this.
“A significant achievement is overcoming the corrosion of copper foil caused by sulfur and addressing economic feasibility, which are major barriers to entry for sulfide-based solid electrolytes,” it said.
The company is conducting sample evaluations of nickel-plated foil tailored to the processes and form factors of major domestic customers. It is also conducting nickel surface treatment studies to secure adhesion to active materials.
