{"id":6885,"date":"2026-05-11T17:08:55","date_gmt":"2026-05-11T09:08:55","guid":{"rendered":"https:\/\/oqitop.com\/?post_type=product&p=6885"},"modified":"2026-05-28T17:14:31","modified_gmt":"2026-05-28T09:14:31","slug":"custom-pet-double-sided-composite-copper-foil-lithium-ion-battery-current-collector-for-rd-prototyping","status":"publish","type":"product","link":"https:\/\/oqitop.com\/es\/custom-pet-double-sided-composite-copper-foil-lithium-ion-battery-current-collector-for-rd-prototyping\/","title":{"rendered":"Custom PET Double-Sided Composite Copper Foil | Lithium-Ion Battery Current Collector for R&D & Prototyping"},"content":{"rendered":"

Custom PET Double-Sided Composite Copper Foil<\/span><\/h2>\n

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Introducci\u00f3n<\/strong><\/b><\/p>\n

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  1. PET double-sided composite copper foil is a functional current collector material in which a thin PET (polyethylene terephthalate) film is laminated to both sides of an ultra-thin copper foil. The copper layer provides excellent electrical conductivity and acts as the main current collector, while the PET layers offer mechanical reinforcement, insulation, and improved puncture and tear resistance. This structure helps enhance safety and dimensional stability in lithium-ion cells and is widely used in R&D cells, experimental coin\/pouch\/stacked batteries, and specialty lithium-based systems where mechanical robustness and handling convenience are important.<\/li>\n
  2. \n
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    We offer customizable PET composite copper foil for laboratory and small-scale production, including adjustable copper thickness (e.g., 4\u201312 \u00b5m), PET thickness, width, and total laminate thickness. Surface treatment options (such as roughened, treated, or coated copper surfaces) can be provided to improve adhesion with active materials and binders. Rolls or cut sheets are available to match your electrode coating and cell assembly process. Our materials are produced in reference to common lithium-ion battery copper foil and PET film standards, and we provide technical support to help researchers select suitable specifications for new cathode\/anode designs, solid-state concepts, or prototype cell development.<\/p>\n

    Especificaciones<\/strong><\/b><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Tipo<\/td>\nPET Double\u2011Sided Composite Copper Foil \/ PET\u2013Cu\u2013PET Laminate \/ Lithium\u2011Ion Battery Current Collector (R&D & Prototype Use)<\/td>\n<\/tr>\n
    Structure<\/td>\nSandwich structure of PET\/Cu\/PET: ultra\u2011thin copper foil laminated between two PET (polyethylene terephthalate) films; copper as current collector, PET as mechanical and electrical barrier layers<\/td>\n<\/tr>\n
    Base Materials<\/td>\nCopper foil: high\u2011purity battery\u2011grade copper (typically \u2265 99.9% Cu); PET film: electrical\u2011grade biaxially oriented PET (BOPET)<\/td>\n<\/tr>\n
    Copper Thickness<\/td>\nCustomizable copper thickness, typically from about 4 \u03bcm to 12 \u03bcm (other thicknesses available on request for special cell designs)<\/td>\n<\/tr>\n
    PET Thickness (each side)<\/td>\nCustomizable PET film thickness, commonly 6\u201325 \u03bcm per side (total PET 12\u201350 \u03bcm); selected according to mechanical strength and insulation requirements<\/td>\n<\/tr>\n
    Total Laminate Thickness<\/td>\nDetermined by Cu + 2\u00d7PET; typical total thickness range approx. 20\u201380 \u03bcm depending on configuration<\/td>\n<\/tr>\n
    Electrical & Thermal Props.<\/td>\nCopper core provides low resistivity and good in\u2011plane thermal conductivity, suitable as a current collector for laboratory Li\u2011ion, Li\u2011metal, or solid\u2011state cell research<\/td>\n<\/tr>\n
    Mechanical Properties<\/td>\nPET layers improve tensile strength, tear resistance, and handling robustness; laminate has better puncture resistance and dimensional stability than bare ultra\u2011thin copper foil<\/td>\n<\/tr>\n
    Surface Options (Cu side)<\/td>\nBare, treated\/roughened, or coated copper surface to enhance adhesion with electrode slurry (active material + binder); one\u2011side or both\u2011side active coating compatible<\/td>\n<\/tr>\n
    Insulation & Barrier<\/td>\nPET layers provide electrical insulation and barrier properties (against shorting, metal migration, and some moisture\/chemical ingress) depending on stack design<\/td>\n<\/tr>\n
    Formulario<\/td>\nSupplied in rolls (coils) or cut sheets; suitable for lab coaters (slot\u2011die, doctor blade, comma bar) and small pilot lines<\/td>\n<\/tr>\n
    Width & Length<\/td>\nWidth typically from 50 mm up to about 500\u2013700 mm for R&D and pilot use (wider on request); roll length according to thickness and order specification<\/td>\n<\/tr>\n
    Dimensional Tolerances<\/td>\nTight control of copper and PET thickness, width, and flatness to ensure uniform coating, calendering, and slitting in laboratory and small\u2011scale production<\/td>\n<\/tr>\n
    Thermal Stability<\/td>\nPET layer usable in typical electrode drying and calendaring conditions for Li\u2011ion R&D (within PET temperature limits); copper layer stable over common processing temperatures<\/td>\n<\/tr>\n
    Application Range<\/td>\nLithium\u2011ion and emerging lithium\u2011based cells (coin\/pouch\/prismatic prototypes), solid\u2011state and semi\u2011solid cells, lab\u2011scale current collectors, safety\/insulation structures, and experimental designs<\/td>\n<\/tr>\n
    Processing Capability<\/td>\nSuitable for slitting, die\u2011cutting, punching, and laser cutting; compatible with standard electrode coating, drying, calendaring, stacking\/winding, and lab\u2011scale cell assembly<\/td>\n<\/tr>\n
    Standards & Reference<\/td>\nManufactured with reference to common battery copper foil standards (e.g., ASTM\/EN for Cu foil) and PET film standards; specific property data (tensile, resistivity, breakdown) available on datasheet<\/td>\n<\/tr>\n
    Customization<\/td>\nTailored Cu and PET thickness, laminate structure (e.g., PET\/Cu, PET\/Cu\/PET), roll width\/length, surface treatment, and sheet formats according to customer drawings or process requirements<\/td>\n<\/tr>\n
    Packaging<\/td>\nSupplied in clean, dust\u2011protected rolls or sheets; vacuum or moisture\u2011barrier packing with edge protection; carton or wooden\u2011case packaging for safe storage and transport<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/li>\n<\/ol>\n

    Dimensiones de referencia<\/strong><\/b><\/p>\n\n\n\n\n\n
    0.1mm*50mm*500mm<\/td>\n0.2mm*100mm*1000mm<\/td>\n0.1mm*200mm*2000mm<\/td>\n<\/tr>\n
    0.2mm*3000mm*30000mm<\/td>\n0.3mm*5000mm*5000mm<\/td>\n0.1mm*500mm*10000mm<\/td>\n<\/tr>\n
    0.2mm*5000mm*20000mm<\/td>\n0.1mm to 50mm*10000mm*10000mm<\/td>\nEl tama\u00f1o se puede personalizar.<\/span><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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