Energy storage composite copper foil concept

Is polypropylene a good support layer for copper foil current collectors?

Polypropylene (PP) film is widely used as the support layer of composite copper foil current collectors (CCs) due to its excellent mechanical properties and chemical stability. However, the interface adhesion between the PP layer and the copper layer is weak, due to the significant difference in surface energy.

What is the role of copper foil in a Lib?

Within LIBs, copper foil is both the carrier of the negative active material and the electron collector, essential for gathering electrons from the active material and augmenting the output current [5, 6].

What is a copper foil layer?

This layer impedes the discharge process of copper ions, restrains the rapid growth of protruding grains, and refines the grains, yielding smooth copper foil with exceptional mechanical properties .

How to improve the performance of copper foil?

Composite electrodeposition Besides the three strategies mentioned above, another promising method to enhance the performances of copper foil is the introduction of foreign materials, such as SiO 2 , TiO 2 , carbon nanotube , and graphene (rGO) [46, 47, 48, 49], to form the composite foil.

Why is electrodeposited copper foil important for lithium-ion battery current collector?

As a crucial material for fabrication of lithium-ion battery current collector, the properties of electrodeposited copper foil are closely related to the battery performances. How to improve its properties is thus of great importance for battery design and manufacturing.

What is electrolytic copper foil?

Electrolytic copper foil has gained significant attention as an essential component in lithium-ion batteries (LIBs), printed circuit boards (PCBs), and chip packaging substrates (CPSs) applications.