| Abstract Scope |
Electrolytic copper foils have been a key component of lithium-ion batteries (LIBs) and printed circuit boards (PCBs). In recent years, with the rapid development of the electronics and energy industries, the importance of the electric vehicle industry has grown significantly, aiming to achieve net zero emissions by 2050. Consequently, the performance requirements for electrodeposited copper foils are also increasing. In this study, by addition carbon nanotubes (CNTs), we successfully developed composite Cu foils that exhibit both high electrical conductivity and strength. By incorporating suitable additives, the ultimate tensile strength (UTS) of the Cu foils was increased 755 MPa, representing enhancements of 82% compared to pure Cu foils. Moreover, the electrical conductivity reached up to 99.43%. Focused ion beam (FIB) analysis revealed that microstructures exhibited columnar nanotwinned copper. Importantly, the addition CNTs did not alter the nanotwinned structures of the Cu foils. |