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Double-Sided Conductive Carbon-Coated Stainless Steel Foil Description

Double-Sided Conductive Carbon-Coated Stainless Steel Foil is an advanced electrode material developed for high-performance energy storage and electrochemical systems. It consists of a stainless steel substrate coated on both sides with a uniform layer of conductive carbon. It is designed to enhance electrical performance while maintaining excellent mechanical strength and chemical resistance.

The stainless steel core provides structural integrity, high tensile strength, and thermal stability, making it ideal for environments with high current loads or temperature fluctuations. The carbon coating, applied through precise techniques such as slurry coating and thermal curing, ensures excellent electrical conductivity and forms a stable interface with active electrode materials. Its double-sided design enables symmetrical conductivity and improved adhesion, supporting efficient charge/discharge cycles and minimizing internal resistance.

Additionally, the carbon layer protects the metal substrate from corrosion, especially in harsh electrolytic environments, extending the electrode’s lifespan and maintaining consistent performance over long operating cycles. The carbon surface also improves bonding with various active materials, contributing to enhanced electrochemical activity and reliability.

This material is widely used in lithium-ion and sodium-ion batteries, supercapacitors, and hybrid energy storage devices. Its combination of strength, conductivity, and resistance to chemical degradation makes it an ideal choice for next-generation energy solutions and demanding industrial applications.

Double-Sided Conductive Carbon-Coated Stainless Steel Foil Applications

1. Lithium-ion and Sodium-ion Batteries: Used as a current collector and electrode substrate for both anode and cathode materials, offering excellent conductivity and corrosion resistance.

2. Supercapacitors: Enhances surface conductivity and supports stable electrochemical cycling in high-power energy storage systems.

3. Hybrid Energy Storage Devices: Suitable for systems combining battery and capacitor functions, where both strength and conductivity are essential.

4. Fuel Cells: Acts as a corrosion-resistant, conductive component in electrode assemblies exposed to harsh chemical environments.

5. Electrochemical Sensors and Reactors: Used in sensors and small-scale electrochemical systems requiring chemical stability and electrical responsiveness.

6. Flexible and Wearable Electronics: Offers mechanical durability and conductivity in flexible energy storage components.

7. Grid and Stationary Energy Storage: Ideal for large-scale systems demanding long-term reliability and low maintenance in demanding environments.

Double-Sided Conductive Carbon-Coated Stainless Steel 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.

Double-Sided Conductive Carbon-Coated Stainless Steel Foil FAQs

Q1. What is the purpose of the carbon coating on both sides?

The double-sided carbon coating enhances electrical conductivity, improves adhesion with electrode materials, and provides corrosion protection for the stainless steel substrate.

Q2. What applications is this foil used in?

It’s widely used in lithium-ion batteries, sodium-ion batteries, supercapacitors, hybrid energy storage systems, fuel cells, and electrochemical sensors.

Q3. Why use stainless steel as the base material?

Stainless steel offers high mechanical strength, corrosion resistance, and thermal stability, making it ideal for demanding energy and electrochemical environments.

Related Information

1.       Common Preparation Methods

The preparation of Double-Sided Conductive Carbon-Coated Stainless Steel Foil begins with the selection and cleaning of high-grade stainless steel foil to remove any surface oxides, oils, or contaminants that could affect coating adhesion. A specially formulated carbon slurry, containing conductive carbon materials, binders, solvents, and dispersants, is then applied to both sides of the stainless steel using precision coating techniques such as roll-to-roll, slot-die, or doctor blade coating. The coating process is carefully controlled to ensure uniform thickness and surface coverage. After application, the coated foil is passed through a drying oven to remove solvents, followed by thermal curing or baking at elevated temperatures to improve adhesion strength, remove residual volatiles, and enhance the conductivity and structural integrity of the carbon layers. Additional calendaring may be performed to compress the coating layers, reduce surface roughness, and achieve desired mechanical properties. The final product is inspected for coating uniformity, electrical resistance, adhesion, and surface quality. Once the material meets technical specifications, it is slit, cut, or rolled according to application requirements and packaged for shipment. This process ensures the foil delivers high conductivity, corrosion resistance, and durability for advanced electrochemical and energy storage applications.