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Silicon Carbon Single Side Coated Cathode Electrode Disc Description

Silicon Carbon Single Side Coated Cathode Electrode Disc is an advanced electrode material designed to meet the high energy density demands of next-generation lithium-ion batteries. It consists of a conductive substrate, such as copper or aluminum, coated on one side with a carefully engineered composite of silicon and carbon. The silicon component provides a high theoretical specific capacity, significantly boosting the energy storage capability of the electrode. However, due to silicon’s natural tendency to expand and contract during charge/discharge cycles, it is combined with carbon, which serves to buffer the volume changes and enhance overall structural stability.

The carbon matrix also improves electrical conductivity, helping maintain efficient charge transfer and minimizing internal resistance. This single-sided coating design is especially advantageous in layered cell architectures, where controlled material distribution and interface contact are critical for consistent performance. The Disc form factor ensures compatibility with various battery assembly methods and is often used in research, prototyping, or specialty energy storage systems.

This electrode is ideal for applications requiring high capacity, compact size, and long cycle life, such as electric vehicles, drones, consumer electronics, and energy-dense portable devices. Its optimized performance characteristics support fast charging, extended operational lifespan, and stable electrochemical behavior under demanding usage conditions.

Silicon Carbon Single Side Coated Cathode Electrode Disc Applications

1. Lithium-Ion Batteries: Used as a high-capacity anode material (despite the "cathode" naming, silicon-carbon is typically applied on the anode side) in advanced lithium-ion cells for enhanced energy density.

2. Electric Vehicles (EVs): Supports extended driving range and fast charging in EV battery packs due to its high specific capacity and cycling stability.

3. Consumer Electronics: Ideal for smartphones, laptops, and tablets requiring compact, lightweight batteries with long life and high power output.

4. Drones and UAVs: Offers high energy-to-weight ratio and durability for aerial systems where efficiency and endurance are critical.

5. Energy Storage Systems (ESS): Enhances performance in grid-level or backup energy storage where high cycle life and reliability are needed.

6. Wearable Devices: Suitable for small, high-performance batteries in wearables due to its thin form factor and stable electrochemical behavior.

7. Battery R&D and Prototyping: Frequently used in academic and commercial research for testing next-gen lithium-ion battery formulations and architectures.

Silicon Carbon Single Side Coated Cathode Electrode Disc 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.

Silicon Carbon Single Side Coated Cathode Electrode Disc FAQs

Q1. What are the advantages of using silicon-carbon materials?

They offer much higher capacity than traditional graphite anodes, improved cycle life, and better charge/discharge efficiency due to the carbon matrix buffering silicon's volume expansion.

Q2. Why is the coating only on one side?

Single-side coating allows better control of active material distribution and is preferred in certain battery designs to optimize layering and reduce material stress.

Q3. What are the typical applications?

This electrode Disc is used in high-performance lithium-ion batteries for EVs, consumer electronics, drones, wearables, and energy storage systems.

Related Information

1.       Common Preparation Methods

The preparation of the Silicon Carbon Single Side Coated Cathode Electrode Disc begins with the selection of a clean, conductive metal substrate, typically copper or aluminum foil, depending on the intended battery chemistry. A silicon-carbon slurry is formulated by mixing silicon nanoparticles, conductive carbon additives (such as carbon black or graphene), binders like polyvinylidene fluoride (PVDF), and a solvent such as N-methyl-2-pyrrolidone (NMP). This slurry is homogenized using ball milling or high-shear mixing to ensure uniform dispersion of all components. The resulting mixture is then coated onto one side of the metal foil using techniques such as doctor blade, slot-die, or roll-to-roll coating. After coating, the electrode passes through a drying oven to evaporate the solvent and partially cure the binder. Thermal calendaring may be used to compress the active layer, reduce porosity, and improve adhesion and electrode density. Finally, the coated foil is cut into circular Disc shapes and may undergo vacuum drying and weighing before being assembled into cells or used in electrochemical testing. Throughout the process, thickness, coating uniformity, and surface quality are carefully monitored to ensure consistent electrochemical performance and mechanical stability.