JIMA Electrolytic Copper Foil

Double-sided Polished Electrolytic Copper Foil 4.5μm~15μm
Double-sided polished electrolytic copper foil is characterized by a symmetrical structure of two sides, metal density close to the theoretical density of copper, very low profile of the surface, excellent elongation and tensile strength, and so forth. As the cathode collector for lithium batteries, it has excellent cold/thermal resistance and can significantly extend the battery longevity. It can be widely applied in batteries for new-energy vehicles, the 3C industry represented by smart phones, notebook computers, and the ESS storage system, and space. 

Reverse-Treated Foil
As reverse-treated copper foil, this product has better etchability performance. It can effectively shorten the production process, achieve higher speed and fast micro-etching, and improve the conformance rate of PCBs. It is mainly applied in multilayered boards and high-frequency boards.

VLP (Very Low Profile) Copper Foil
JIMA Copper supplies electrolytic copper foil of very low surface roughness. Compared with regular electrolytic copper foil, this VLP foil has finer crystals, which are equiaxed ones with flat ridges, have a surface roughness of 0.55μm, and have such merits as better size stability and higher hardness. This product is applicable to high-frequency and high-speed materials, mainly flexible circuit boards, high-frequency circuit boards, and ultra-fine circuit boards. 

LP (Low Profile) Copper Foil
This foil is mainly used for multilayered PCBs and high-density circuit boards, which require the surface roughness of the foil to be lower than that of regular copper foil so that their performances such as peeling resistance can remain at a high level. It belongs to a special category of electrolytic copper foil with roughness control. Compared with regular electrolytic copper foil, the crystals of LP copper foil are very fine equiaxed grains (<2/zm). They contain lamellar crystals instead of columnar ones, while they feature flat ridges and a low level of surface roughness. They have such merits as better size stability and higher hardness. 

HTE (High Temperature Electrolytic) Copper Foil
The company has developed fine-grain and high-strength copper foil of low surface roughness and high-temperature ductibility performance. This foil features evenly fine grains and high extensibility and can prevent fissures caused by thermal stress, thus suitable for the internal and external layers of a multilayered board. With a low level of surface roughness and excellent etchability, it is applicable for high density and thinness. With excellent tensile strength, it helps to improve flexibility and is mainly applied in the multilayer PCB as well as the flex plate. With excellent resilience and toughness, it is not easily torn on the edge or fold, greatly improving the product conformance rate.

Porous Copper Foil for Lithium Batteries
JIMA Copper is the first enterprise that has applied the PCB process in producing porous copper foil. It carries out secondary deep processing on the basis of the existing 6-15μm lithium battery copper foil. The resulting copper foil is lighter and more resilient. Compared with battery cells of the same size in conventional copper foil, this micro-hole copper foil has obviously improved performance. A lithium battery made with such copper foil can reduce its weight; it can ensure the adhesion of electrode materials and collectors, reduce the degree of distortion due to drastic expansion and contraction in fast charge and discharge, and guarantee the safety and reliability of batteries. It can correspondingly increase battery capacity and improve battery energy density, thus achieving a longer range for lithium batteries. 
The bore diameter, porosity, width, and so forth of the micro-hole copper foil can be custom-made to meet actual customer requirements. The bore diameter can range from 30μm to 120μm; the porosity can be 20% to 70%. It can be used as a conductive collector for lithium-ion batteries, solid-state lithium-ion batteries, super capacitors, and so forth, while it can also be applied in nickel-cadmium or nick-hydrogen batteries.  

Post time: Oct-22-2021