Super Capacitor Activated Carbon: CR-1900 vs CR-2500 for Energy Storage

In the fast-growing new energy and energy storage industry, the performance of supercapacitors and lithium-ion hybrid capacitors largely depends on the electrode materials used.

As a core raw material for capacitor electrodes, super capacitor activated carbon affects key performance indicators of energy storage devices, including specific capacitance, charge-discharge speed, service life and long-term stability.

Low-purity or inferior carbon materials may lead to low energy efficiency, serious self-discharge and shorter cycle life, which can bring hidden risks to industrial energy storage systems and precision electronic equipment.

Our super capacitor activated carbon is developed for electrochemical energy storage applications with higher requirements for purity, pore structure and batch stability. We provide two in-house product grades: CR-1900 and CR-2500. These model names are our own product grade names and are not universal industry standard model names.

CR-1900 is suitable for conventional energy storage applications, while CR-2500 is designed for higher-performance and higher-purity energy storage scenarios. With high specific surface area, low metal impurity content and stable pore structure, our carbon materials help customers manufacture efficient, stable and long-life supercapacitor products.

Core Product Parameters of Super Capacitor Activated Carbon

Different from conventional activated carbon used for water treatment or gold extraction, capacitor-grade activated carbon requires finer powder processing and stricter impurity control. These properties make it more suitable for the electrochemical working environment of energy storage devices.

The following table shows the typical specifications of our two in-house capacitor carbon grades.

CR-1900 Standard Super Capacitor Carbon

CR-1900 is our standard-grade super capacitor activated carbon. It is designed for conventional supercapacitor electrode production and offers a balance between stable performance and cost efficiency.

Application Scope

CR-1900 is suitable for manufacturing button-type, roll-type, stacked-type and box-type EDLC supercapacitors. It can also support conventional power energy storage systems of lithium-ion supercapacitors.

This grade is recommended for:

• Consumer electronic supercapacitors

• Industrial instrument backup power supplies

• Smart meters and control equipment

• Conventional EDLC supercapacitors

• General power energy storage systems

• Cost-sensitive capacitor applications

CR-2500 High-Purity Super Capacitor Carbon

CR-2500 is our high-purity super capacitor activated carbon grade. It is designed for high-performance energy storage applications that require larger specific surface area, lower ash content and higher specific capacitance.

Application Scope

CR-2500 is suitable for high-performance supercapacitors and lithium-ion hybrid supercapacitors. It is recommended for energy storage devices with strict impurity control requirements and higher capacitance performance requirements.

This grade is recommended for:

• High-performance EDLC supercapacitors

• Lithium-ion hybrid capacitors

• Precision energy storage devices

• Medical electronic equipment

• Rail transit energy storage systems

• Outdoor IoT energy storage devices

• New energy vehicle auxiliary power systems

Core Advantages of Our Super Capacitor Carbon

Ordinary activated carbon usually has higher impurity content, uneven pore structure and unstable capacitance performance. These limitations make it difficult to meet the long-term frequent charge-discharge requirements of energy storage equipment.

Our super capacitor activated carbon is optimized for electrode applications and offers the following advantages.

1. Low Impurity Content for Better Stability

Both CR-1900 and CR-2500 are produced with strict impurity control. The Fe content is controlled at ≤10 ppm, helping reduce the risk of self-discharge and electrochemical corrosion caused by metal impurities.

Low ash content also contributes to better electrode stability and longer service life of the final supercapacitor device.

2. High Specific Surface Area for Energy Storage Efficiency

The CR-2500 grade offers a specific surface area of up to 3000 m²/g and a larger total pore volume. This provides more ion adsorption channels and supports higher specific capacitance.

A suitable pore structure can help improve charge-discharge performance and energy storage efficiency in supercapacitor applications.

3. Uniform Fine Particle Size for Electrode Processing

Both grades are supplied with a stable particle size of 5–10 μm. The fine and uniform powder structure is suitable for electrode slurry preparation, coating and molding processes.

Consistent particle size helps improve electrode uniformity, production stability and batch-to-batch consistency.

Wide Application Fields of Super Capacitor Activated Carbon

Our super capacitor activated carbon can be used in EDLC double-layer supercapacitors and LIC lithium-ion hybrid supercapacitors. It is suitable for civil, industrial, new energy, medical and special energy storage applications.

1. Consumer Electronics Energy Storage

Supercapacitors can be used as backup power and fast charge-discharge energy storage units in smart watches, Bluetooth headsets, digital cameras, smart remote controls and portable recording devices.

They help solve problems such as slow charging and insufficient instantaneous power supply in small electronic devices.

2. Industrial Backup Power Systems

Supercapacitors can provide stable short-term backup power for PLC industrial control equipment, precision instruments, flow meters, solenoid valves, smart water meters and gas meters.

In case of sudden power failure, they can help maintain data storage, complete safe valve closing and support the stable operation of industrial automation equipment.

3. Smart Grid and New Energy Power Generation

In smart grid and renewable energy systems, supercapacitors can be used for grid frequency regulation, voltage compensation and instantaneous power supply of circuit breakers.

They can also buffer power fluctuations in photovoltaic and wind power generation systems, helping stabilize grid voltage and improve the utilization of new energy power generation.

4. Rail Transit and Construction Machinery

Supercapacitors can be used for braking energy recovery in subways and trams. They can also support start-stop energy storage systems in forklifts, loaders and port gantry cranes.

These applications help reduce battery loss, save energy and lower operating costs.

5. New Energy Vehicle Supporting Systems

Supercapacitors can be used in hybrid vehicle start-stop systems and auxiliary buffer power supplies for passenger car battery systems.

They help improve fast power response, support low-temperature discharge and reduce the stress caused by frequent fast charging and discharging of lithium batteries.

6. IoT and Outdoor Monitoring Energy Storage

Supercapacitors are suitable for solar monitoring cameras, outdoor sensors, meteorological monitoring stations, marine buoys and mountain photovoltaic micro-energy storage systems.

They can adapt to harsh outdoor working environments and provide reliable short-term energy storage support.

7. High-End Precision and Special Applications

Medical Equipment

Supercapacitors can be used as backup power supplies for portable ventilators, defibrillators, blood glucose meters and other medical devices that require stable and safe energy storage.

Aerospace and Defense Applications

They can support instant energy storage for satellite attitude adjustment, individual communication equipment and UAV backup power systems.

Automated Robots

Supercapacitors can be used in AGV handling robots and warehouse intelligent robots that require frequent fast charging and discharging.

Model Selection Guide: CR-1900 vs CR-2500

To help customers choose the suitable capacitor carbon material, we have summarized the recommended application scenarios of CR-1900 and CR-2500.

CR-1900: Cost-Effective Standard Grade

CR-1900 offers stable performance and cost advantages. It is a practical choice for mass-production energy storage products and conventional supercapacitor applications.

It is widely used in:

• Consumer electronic supercapacitors

• Industrial instrument backup power supplies

• Standard EDLC supercapacitors

• Ordinary new energy vehicle start-stop systems

• General civil energy storage devices

CR-2500: High-Purity High-Performance Grade

CR-2500 has lower ash content, larger specific surface area and higher specific capacitance. It is suitable for applications that require higher purity, better capacitance performance and longer-term stability.

It is recommended for:

• Lithium-ion hybrid capacitors

• High-performance supercapacitors

• Medical precision equipment

• Long-life IoT outdoor devices

• Rail transit energy storage systems

• Aerospace and special energy storage applications

FAQ About Super Capacitor Activated Carbon

Q1: Are CR-1900 and CR-2500 standard industry model names?

No. CR-1900 and CR-2500 are our own product grade names. They are used to distinguish different specifications of our super capacitor activated carbon products. Customers should compare actual technical parameters such as specific surface area, ash content, Fe content, pore volume, particle size and specific capacitance when selecting materials.

Q2: What is the difference between capacitor carbon and ordinary activated carbon?

Ordinary activated carbon is mainly used for water treatment, decolorization, purification and gold extraction. It usually has lower requirements for impurity control and pore structure.

Capacitor carbon is specially optimized for electrochemical energy storage. It features low metal impurity content, suitable pore structure and stable capacitance performance, making it more suitable for supercapacitor electrode production.

Q3: Why is low iron content important for capacitor carbon?

Excessive iron impurities may cause self-discharge, accelerate device aging and reduce cycle life. Our capacitor carbon products control Fe content at ≤10 ppm, helping improve the long-term stability of energy storage devices.

Q4: Can you provide customized capacitor carbon specifications?

Yes. We support customized particle size, specific surface area and pore structure according to customers’ capacitor production processes and application scenarios.

Technical matching support and third-party test reports can be provided upon request.

Q5: What types of supercapacitors are your products suitable for?

Our CR-1900 and CR-2500 capacitor carbon products are suitable for button-type, roll-type, stacked-type and box-type EDLC double-layer supercapacitors, as well as LIC lithium-ion hybrid supercapacitors.

Get Customized Solution and Competitive Quotation

As a supplier of super capacitor activated carbon, we provide CR-1900 and CR-2500 capacitor carbon for different energy storage applications.

Whether you need standard capacitor carbon for conventional applications or high-purity carbon materials for precision energy storage devices, we can provide technical selection support, sample testing and customized processing services.

Please tell us your capacitor type, application scenario and required technical parameters. Our team will recommend a suitable solution and provide a competitive quotation for your project.