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Technical Parameters
Datasheet of Harog’s Carbon Felt for Redox Flow Battery
Parameter | Unit | Data |
Thickness | mm | 2.31-2.69 |
Bulk density | g/cm³ | 0.083-0.097 |
Sheet resistance @0.1MPa | mΩ·cm² | ＜100 |
Fracture strength | N | ≥8 (max power) |
Battery performance @160mA·cm² | % | VE＞85.0 EE＞82.0 |
Cycle stability | / | 2,000 cycles, VE attenuation＜2% |
Production width | m | ≤1.3 |
Single Cell Performance
Model | Current density | CE/% | VE/% | EE/% | Current density | CE/% | VE/% | EE/% |
HR-3014 Media value | 160 | 96.3 | 85.7 | 82.5 | 200 | 96.6 | 83.3 | 80.5 |
[Test conditions]
• Battery dimension: 48 cm²
• Bipolar plate: IGP
• Membrane: PFSA
• Compression rate: 25-27%
• Charge-discharge voltage: 1.00-1.55 V
• Galvanostatic charge-discharge: 160,200 mA·cm²
Harog Technology Edge
In-house PAN carbonisation and graphitisation line (80 k m² campus) delivers lot-to-lot ash ≤ 20 ppm, Fe ≤ 0.5 ppm—meets sub-ppm contamination budget for GWh projects.
Proprietary dual activation (800 °C air + 900 °C N₂) gives uniform functional-group depth ≥ 200 µm; felt life > 30 000 h verified in 250 mA cm⁻² VRFB loop.
Widths up to 1.3 m, thickness tolerance ±0.05 mm, resistance tested 100 % inline; lead-time 4–6 weeks, 20% cost advantage vs. EU/JP sources.
By supplying ultra-pure, activation-optimised carbon felt in continuous-roll or cut-sheet form, Harog Technology enables VRFB builders to reach > 82 % energy efficiency and > 30 kh electrode life while keeping $ kWh⁻¹ at grid-scale parity.
