Alfa Chemistry offers porous self-support hard carbon paper, a cutting-edge negative electrode material engineered for high-efficiency sodium storage. Unlike traditional powder-based carbon materials, this freestanding carbon paper eliminates the need for binders and conductive additives, enabling simpler electrode assembly and enhanced electrochemical performance.

Produced via controlled pyrolysis of cross-linked organic precursors, this hard carbon exhibits a highly disordered structure with short-range stacking and long-range amorphous characteristics. Its unique pore structure—comprising micropores (~1.8–2.0 nm), mesopores (3.0–9.5 nm), and a minor fraction of macropores—offers a high surface area, improved ion accessibility, and effective stress accommodation during charge–discharge cycles.
Product Information
| Item | Details |
| Product Name | Porous self-support hard carbon paper |
| Catalog Number | ACM-SBM49 |
| Distribution of Pore Size | Micropores: 1.8–2.0 nm; Mesopores: 3.0–9.5 nm; Minor macropores |
| Packaging | 1 cm × 1 cm |
Key Features
- Freestanding & Binder-Free: Eliminates the need for metallic current collectors, binders, and conductive additives—streamlining device fabrication and reducing weight.
- Hierarchical Pore Architecture: A multi-scale pore distribution enhances ion transport, provides high active surface area, and supports effective sodium-ion intercalation.
- Disordered Carbon Structure with Large Interlayer Spacing: Promotes reversible ion insertion and enhances specific capacity by offering abundant storage sites and fast kinetics.
- Excellent Rate Capability & Cycling Stability: Delivers consistent performance under high current densities, with minimal structural degradation over long-term cycling.
- Thermal and Structural Stability: Retains integrity under high-temperature processing and repeated electrochemical cycling, suitable for robust battery designs.
Application Areas
- Next-Generation Sodium-Ion Batteries
Ideal as a negative electrode for research and development in high-capacity, low-cost sodium-ion battery systems.
- Large-Scale Energy Storage
Supports renewable energy integration by enabling cost-effective and scalable energy storage solutions.
- Smart Grids & Stationary Power
Improves grid responsiveness and load balancing when deployed in sodium-based battery packs.
- Electric Mobility (Low-Speed Vehicles)
Suitable for electric bikes, scooters, and other low-speed electric vehicles where battery affordability and cycle life are key.
Enables fast charging and long-lasting performance in portable devices requiring stable and safe energy sources.
Why Choose Alfa Chemistry?
Alfa Chemistry specializes in advanced carbon materials for emerging battery technologies. Our porous self-support hard carbon paper is produced with reliable quality, well-defined structure, and consistent electrochemical performance. We offer flexible supply options and responsive technical support to meet both research and commercial needs.