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Hard Carbon Paper

Hard carbon paper is a carbon-based fibrous material produced through the pyrolysis of cross-linked polymer precursors at around 1000 °C. Known for its resistance to graphitization—even at temperatures exceeding 2500 °C—it features a disordered microstructure and expanded interlayer spacing. These characteristics make it particularly well-suited as a negative electrode material in sodium-ion batteries.

As the key medium for sodium storage, the anode plays a vital role in determining battery performance. Compared to other anode materials, hard carbon offers greater ion-accessible volume, higher reversible capacity, and improved cycle stability. Its short-range carbon layer stacking and long-range disorder facilitate sodium ion diffusion and storage, leading to enhanced energy density and rate performance.

Alfa Chemistry supplies high-quality hard carbon paper designed specifically for sodium-ion battery research and development. It delivers reliable electrochemical performance and durability across a range of emerging energy applications.

Product Information

Item	Details
Product Name	Hard carbon paper
Catalog Number	ACM-SBM46
Appearance	Black fibrous
Length	100–200 μm (SEM)
Diameter	5–20 μm (SEM)
Packaging	1 cm × 1 cm

Key Features

Graphitization-Resistant: Maintains structural stability even at ultra-high temperatures, resisting graphitization beyond 2500 °C.
Disordered Carbon Microstructure: Composed of short-range stacked carbon layers and long-range amorphous regions. Cross-linked carbon domains create structural disorder, enhancing sodium storage capacity.
Expanded Interlayer Spacing & Microporosity: Allows for rapid ion transport and high charge accommodation. The increased spacing and porous architecture provide more active sites for sodium insertion.
Excellent Rate Capability: Supports high-rate charge/discharge operations due to fast ion diffusion and structural openness.
Outstanding Cycling Stability: Stable carbon network delivers extended lifespan over repeated cycles, ensuring long-term performance.

Application Areas

Electric Vehicles (EVs)

Applicable in new energy vehicles where safety, fast charging, and cost-effectiveness are key considerations.

Renewable Energy Storage

Ideal for solar, wind, and grid storage systems requiring reliable, large-scale energy storage with long cycle life.

Consumer Electronics

Suitable for portable devices such as smartphones, laptops, and tablets that demand fast charging and safety.

Smart Grid Infrastructure

Enhances energy storage systems used in smart grids by supporting peak-shaving, load balancing, and grid stabilization.

Low-Speed Electric Transport

A cost-efficient energy solution for electric bicycles, tricycles, and other light electric vehicles.

Why Choose Alfa Chemistry?

Alfa Chemistry offers high-performance materials tailored for next-generation energy technologies. Our hard carbon paper is rigorously engineered and quality-tested to meet the growing demands of sodium-ion battery applications. With competitive pricing, consistent supply, and expert support, we help accelerate your research and commercial progress in sodium storage solutions.

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