Hard Carbon
Hard carbon is disordered carbon that will not graphitize no matter how hot it is treated. Its widened layer spacings and nano-voids can store sodium ions — making it the de facto anode material of sodium-ion batteries. Demand is growing fast with grid storage and entry-segment electric vehicles.
We produce it from coconut shell feedstock through high-temperature carbonization, in two forms: battery-grade powder with controlled D50 and low impurities, and a precursor ready for final processing at the cell factory.
When to Choose It
- You develop or manufacture sodium-ion cells
- You seek local, traceable anode material supply
- You want precursor carbon for your own final processing
- You run supercapacitor or energy storage R&D programs
Technical Specifications
| Parameter | Typical Value | Test Standard |
|---|---|---|
| Particle size (D50) | 5–10 µm | Laser diffraction |
| Ash | max 0.5% | ASTM D2866 |
| Moisture | max 1% | ASTM D2867 |
| Feedstock | Coconut shell | — |
| Process | High-temperature carbonization | — |
| Form | Powder / precursor granule | — |
Values are typical production ranges; a batch analysis certificate ships with every order.
Applications
- Sodium-ion battery anodes
- Grid-scale energy storage cells
- Entry-segment EV and e-mobility batteries
- Supercapacitor electrodes
- Battery materials R&D programs
- Precursor supply for anode production lines
The three requirements of battery grade
- Narrow particle size distribution: electrode coating quality depends directly on D50 control.
- Low impurities: metallic impurities produce side reactions and self-discharge in the cell.
- Batch consistency: the cell maker expects identical electrochemical behavior every batch.
Frequently Asked Questions
Is hard carbon the same as activated carbon?
No. Activated carbon is an adsorbent; hard carbon is an energy storage material. The feedstock may be shared, but the process and target specifications are entirely different.
Do you provide samples?
Yes — we run sample and specification programs with cell development teams. Contact us with your target capacity and D50 range.
Why coconut based?
It is the proven feedstock of commercial hard carbon: low ash, consistent microstructure and a sustainable supply chain.
