Graphite Solutions for Tomorrow's Innovations
Soft graphite battery felt, as a premium electrode material for most energy storage systems, like vanadium redox flow batteries, utilizes special fibers and weaving techniques, aiming to achieving high liquid absorption and electrical efficiency purposes. Due to processing with continuous production equipment, it exhibits unique characteristics, including a smooth and flat surface, uniform thickness, and overall electrochemical uniformity. Therefore, as electrodes, they demonstrate exceptional performance in VRF battery packs, featuring low internal resistance, uniform electrochemical quality, good corrosion resistance, slow degradation after multiple cycles, and high energy efficiency.
Low resistivity ensures efficient electron transport, improving battery charge and discharge efficiency.
High-purity materials reduce energy loss and improve overall energy utilization.
High surface activity enhances the rate of redox reactions, increasing battery power density.
It remains stable in strong acid and strong alkali electrolyte environments, making it an ideal electrode material for flow batteries.
It maintains stable electrochemical performance after long-term use, extending the service life of the battery stack.
It can operate for extended periods in high-temperature environments without decomposing or deforming, suitable for high-temperature electrochemical applications.
| Name | Unit | Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | Model 6 | Remarks | |
|---|---|---|---|---|---|---|---|---|---|
| Thickness | mm | 2.5 ± 7.5% | 4.35 ± 7.5% | 5.0 ± 7.5% | 5.5 ± 7.5% | 6.0 ± 7.5% | 6.4 ± 7.5% | Customizable upon request | |
| Density | g/cm3 | 0.08 – 0.11 | |||||||
| Width | m | 1.42 – 1.45 | |||||||
| Length | Approx. 190/roll | Approx. 90/roll | Approx. 85/roll | Approx. 70/roll | |||||
| Tensile strength | Radial | N/mm | ≥ 0.1 | ≥ 0.15 | |||||
| Weft | ≥ 0.08 | ≥ 0.18 | |||||||
| Elongation at break | Radial | % | 11 | 12 | 15 | 18 | 16 | 16 | |
| Weft | 17 | 14 | 22 | 19 | 17 | 18 | |||
| Thermal conductivity (1400 °C) | Vertical | W/m ·k | 0.28 | ||||||
| Ash content | % | ≤ 0.04 | |||||||
| Volatile matter | ≤ 0.06 | ||||||||
| Sulfur content | < 0.001 | ||||||||
| Iron content | ≤ 0.002 | ||||||||
| Sheet resistance | Ω/□ | 0.2 – 0.5 | |||||||
| Carbon content | % | ≥ 99.90 | |||||||
| Liquid retention rate | g/g | 22 | 12 | 14 | 12 | 11 | 11 | ||
| Fiber shedding rate | % | ≤ 0.2 | |||||||
| Specific surface area | m²/g | 2.7 – 4.4 | |||||||
| Note: This is just the typical value, not guaranteed value. | |||||||||
A flow battery is an electrochemical device that utilizes the energy difference between specific elements' oxidation states for energy conversion. It achieves energy storage and release through redox (reduction-oxidation) reactions that occur as liquid electrolyte flows between electrodes. The used electrolyte can be pumped back into a storage tank and recirculated to the electrodes for recharging, thereby enabling the battery's reuse. The fundamental distinction between traditional batteries and flow batteries lies in their energy storage mechanisms: traditional batteries store energy within electrode materials, whereas flow batteries store energy in the electrolyte.
