Hydrophobic Graphite Single-Side Coated Copper Foil Description
Hydrophobic Graphite Single-Side
Coated Copper Foil is an advanced functional material designed for
high-performance energy storage and electronic applications. It consists of a
high-purity copper foil substrate with a uniform layer of graphite coated on
one side. The graphite layer is specially treated to be hydrophobic, meaning it
repels moisture, which significantly improves the material's resistance to
oxidation and environmental degradation.
This hydrophobic property enhances
the foil’s stability in humid or corrosive environments, ensuring long-term
reliability and performance. The graphite coating provides excellent electrical
conductivity and a smooth surface, making it ideal as a current collector in
lithium-ion batteries, supercapacitors, and other electrochemical devices. The
single-sided design allows for controlled interface behavior, enabling precise
layering in cell assembly processes.
The copper base ensures high
thermal and electrical conductivity, while the graphite coating supports
uniform charge distribution and strong adhesion with active materials. The
combination of these features results in improved energy efficiency, cycle
life, and safety of the final device.
Hydrophobic Graphite Single-Side
Coated Copper Foil is widely used in energy storage systems, flexible
electronics, and high-reliability electronic components, where moisture
control, conductivity, and surface stability are critical to performance.
Hydrophobic Graphite Single-Side Coated Copper Foil Applications
1. Lithium-ion Batteries: Used as a current collector for
the anode, offering enhanced moisture resistance and stable conductivity.
2. Supercapacitors: Improves charge distribution and cycle
life with its hydrophobic, conductive surface.
3. Flexible Electronics: Provides reliable electrical
performance and environmental stability in bendable or wearable devices.
4. Fuel Cells: Acts as a corrosion-resistant, conductive
layer in gas diffusion or collector plates.
5. Electronic Packaging: Enhances thermal and electrical
performance while protecting against humidity-induced degradation.
6. Energy Storage Modules: Used in advanced battery
assemblies where high performance and moisture control are essential.
Hydrophobic Graphite Single-Side Coated Copper Foil Packaging
Our products are packaged in customized cartons of various
sizes based on the material dimensions. Small items are securely packed in PP
boxes, while larger items are placed in custom wooden crates. We ensure strict
adherence to packaging customization and the use of appropriate cushioning
materials to provide optimal protection during transportation.
Packaging: Carton, Wooden Box, or Customized.
Kindly review the packaging
details provided for your reference.
Manufacturing Process
1. Testing Method
(1) Chemical Composition Analysis - Verified using techniques
such as GDMS or XRF to ensure compliance with purity requirements.
(2) Mechanical Properties Testing - Includes tensile strength,
yield strength, and elongation tests to assess material performance.
(3) Dimensional Inspection - Measures thickness, width, and
length to ensure adherence to specified tolerances.
(4) Surface Quality Inspection - Checks for defects such as
scratches, cracks, or inclusions through visual and ultrasonic examination.
(5) Hardness Testing - Determines material hardness to confirm
uniformity and mechanical reliability.
Please refer to the SAM testing procedures for detailed information.
Hydrophobic Graphite Single-Side Coated Copper Foil FAQs
Q1. Why is the coating only on one side?
Single-side coating allows for controlled interface behavior
in electrochemical cells and ensures optimal bonding with active materials
while keeping the other side conductive for integration.
Q2. Does the graphite layer affect conductivity?
No, the graphite layer enhances surface conductivity while
maintaining excellent electrical performance thanks to strong adhesion and
uniform coating.
Q3. Is the foil flexible for use in wearable or bendable
devices?
Yes, the copper base and thin graphite layer provide good
flexibility, making it suitable for flexible electronics and wearable
technology.
Related Information
1. Common Preparation Methods
The preparation of Hydrophobic
Graphite Single-Side Coated Copper Foil involves several controlled steps to
ensure uniformity, adhesion, and hydrophobic performance. First, high-purity
copper foil is selected and thoroughly cleaned to remove surface oils, oxides,
and other contaminants. A specially formulated graphite slurry is then applied
to one side of the copper foil using techniques such as slot-die coating,
roll-to-roll coating, or doctor blade application. The slurry contains graphite
particles, binders, solvents, and hydrophobic agents that impart
moisture-repellent properties to the final coating.
After the coating is applied, the
foil passes through a drying and curing process under controlled temperature
and humidity conditions to evaporate solvents and strengthen the bond between
the graphite layer and the copper substrate. In some cases, additional surface
treatments such as calendaring or heat pressing are used to enhance coating
density, smoothness, and electrical performance. The finished material is then
trimmed, tested for uniformity, conductivity, hydrophobicity, and adhesion, and
finally rolled or cut to size for use in battery or electronic applications.
This process ensures the final product meets the stringent requirements for
electrochemical and environmental performance.
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