Active Graphite Felt for Flow Battery Electrodes
- Product Description
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It boasts high flatness, excellent density and resistivity uniformity, and is well suited for use as an electrode material in flow batteries (e.g., all‑vanadium, Fe/Cr, sulfur–iron, etc.). It also features low electrical resistance, superior electrochemical activity, outstanding corrosion resistance, minimal capacity fade during cycling, and high energy efficiency.
Technical Index Reference value Density (g/cm3) 0.08-0.10 Carbon content (%) ≥ 99 Tensile strength (MPa) ≥ 0.05 Electrical Resistance (mΩ·cm2) <100 Specific surface area（g/m2） 1.0-4.0 Shedding Rate（%） <1.0 Thickness (mm) 2.5/3.8/4.3/4.5/5.0 Porosity （%） ≥ 90 Single-cell performance testing
Electrochemical Performance Testing – Negative Electrode
0.05 M V 2+ +0.05 M V 3+ /3 M H 2 SO 4 , H-type electrolytic cell measurement
CV scan rate = 20 mV s⁻¹ -1 , EIS measured under OCP
Electrochemical Performance Testing – Cathode
0.05 M V 4+ +0.05 M V 5+ /3 M H 2 SO 4 , measured using a single electrolytic cell
CV scan rate = 20 mV s⁻¹ -1 , EIS measured under OCP
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