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Double sided lithium battery copper foil is a copper foil produced by electrolysis, with both sides having a glossy finish. The Puqiang double-sided light lithium battery copper foil (GT) produced by Defu Technology has high ductility, uniform thickness, good conductivity and wettability, and stable product performance. As a negative current collector for lithium-ion batteries, it is widely used in energy storage batteries, automotive power batteries, and 3C digital batteries.

The medium strength double-sided light lithium battery copper foil (MT-40) produced by Defu Technology has high tensile strength, high elongation, and stable product performance. As a negative current collector for lithium-ion batteries, it reduces copper foil wrinkles and breakage during battery cell manufacturing and subsequent use, and is widely used in energy storage batteries, automotive power batteries, and 3C digital batteries.

The high-strength double-sided lithium battery copper foil (HT-50) produced by our company has high tensile strength, uniform thickness, and low roughness. It has strong resistance to external forces such as rolling and winding of the negative electrode plate of lithium batteries, reducing the occurrence of copper foil fracture and capacity reduction. It is suitable for high-capacity rechargeable batteries and widely used in industries such as large-scale energy storage, new energy vehicles, consumer electronics, and micro nano devices.

As the proportion of high expansion coefficient silicon oxygen or silicon carbon negative electrodes increases, there are more stringent requirements for the tensile extension of the negative electrode current collector. The UHT-60 lithium battery copper foil produced by Defu Technology has a tensile strength of>60kgf/mm2 and also has an elongation of>4% (copper foil thickness of 6 μ m), which is of great benefit to the production and use of lithium batteries.

The high elastic modulus double-sided photovoltaic lithium battery copper foil (HM-50) produced by Defu Technology has high modulus performance, strong flexibility, bending resistance, resistance to breakage, and high conductivity. As a negative current collector for lithium-ion batteries, it can effectively improve the structural stability of the battery, reduce heat generation, increase the energy conversion density of the battery, extend the service life of the battery, and improve safety. It is widely used in 3C digital batteries.

The low elastic modulus double-sided photovoltaic lithium battery copper foil (LM-50) produced by Defu Technology has low roughness, low modulus performance, high tensile strength, and is easy to stretch and stretch. As a negative electrode current collector for lithium-ion batteries, it can avoid electrode breakage during the winding and compaction process, improve battery production efficiency, safety and service life, and is suitable for energy storage batteries and automotive power batteries.

The high elongation double-sided light lithium battery copper foil (HE) produced by Defu Technology has low roughness, extremely high ductility, and stable product performance. As a negative current collector for lithium-ion batteries, it can increase the compaction density, reduce the probability of electrode depression, wrinkling, and strip breakage in the battery cell process, improve production efficiency, reduce battery internal resistance, improve battery capacity, cycle life, and safety. It is suitable for long cycle and high rate lithium-ion batteries.

PCF copper foil is an important component of lithium-ion capacitors and solid-state lithium-ion batteries. For lithium-ion batteries, the advantage of PCF copper foil lies in its anchoring of metallic lithium and increasing the adhesion between metallic lithium and copper foil, reducing the interface impedance between the two, thereby improving the energy density of the battery. For solid-state lithium-ion batteries, PCF copper foil current collector carries the active material of the electrode, provides lithium-ion channels for pre lithiation of the electrode, improves the infiltration efficiency of the electrolyte, and can concentrate the current.

ACF copper foil, as a high-performance current collector material, demonstrates unique value in the fields of supercapacitors and lithium batteries. In supercapacitors, its three-dimensional structure significantly increases the attachment area of electrode active materials, enhances the efficiency of charge storage, reduces internal resistance, and empowers high power density and rapid charging and discharging capabilities. In the field of lithium batteries, this copper foil reduces the shedding of active substances on the electrode sheets during charging and discharging through strong binding force, significantly extending the cycle life. Its resistance to electrolyte corrosion is suitable for advanced battery systems such as high-voltage and high-nickel ternary batteries. Meanwhile, its unique micro-nano roughening design, while ensuring mechanical strength, helps to enhance the commercialization of the next-generation high-energy-density lithium metal batteries, providing key support for the long-range driving of electric vehicles and the efficient operation of energy storage systems.

With its unique sandwich structure, SFC copper foil shows key application value in lithium-ion and solid-state batteries. In lithium-ion batteries, the double-sided coating not only provides an anti-oxidation barrier for the copper substrate, effectively inhibits the corrosion of the electrolyte on the copper foil, and ADAPTS to the high-voltage positive electrode system, but also its excellent electrical conductivity and high surface activity enhance the binding force with the active substance, reduce the internal resistance of the electrode, and help improve the energy density and fast charging performance. For solid state batteries, the inert interface characteristics of the coating can significantly reduce the side reaction with solid electrolyte, inhibit the risk of lithium dendrite penetration, and its high mechanical strength and thermal stability are more compatible with high temperature sintering process, providing a reliable guarantee for the interface stability and long-term cycle of sulfide/oxide system solid state batteries. By precisely controlling the thickness of the coating, SCF copper foil continues to unlock innovation potential in lightweight, safety and adaptation to a variety of battery technology routes, becoming the core material of choice for a new generation of high-energy battery design.

V-SLP

R-SLP

C-IC1

C-IC1-C

RHF1、VHF1、VHF2

VHS1、VHS2、VHS3、VHS4

RHS1、RHS2、RHS3、RHS4

V-SLP

R-SLP

H-SLP

H-HCD

R-HCD

R-FPC

E-TFR

H-HSP

HTE-R(thin)

HTE-R(thick)