Abstract:
A cylindrical battery cell is provided. The cylindrical battery cell configured to have a structure in which a wound type electrode assembly having a positive electrode/separator/negative electrode structure is mounted in a cylindrical can. The cylindrical battery cell includes an inorganic coating portion for accelerating dissipation of heat from the cylindrical can, the inorganic coating portion being provided on at least a part of the outer surface of the cylindrical can.
Abstract:
Disclosed is a top cap for cylindrical secondary batteries that is composed of a corrosion-resistant single substance and has a surface with irregularities to impart surface roughness capable of preventing formation of surface scratches, and a secondary battery including the same.