Figure 5 | Scientific Reports

Figure 5

From: Fabrication of an efficient vanadium redox flow battery electrode using a free-standing carbon-loaded electrospun nanofibrous composite

Figure 5

Cyclic voltammograms of (a1) the used glassy carbons without employing any sample as reference vs. as-spun fibres sample loaded with two groups of CBs, (a2) commercial felt in comparison with as-spun CB-loaded and carbonized CB-loaded electrospun fibrous felts. CB-H was used to fabricate fibers. (b1), (b2) heat treatment was done at 300 °C in air for 24 h for fibers loaded with CB-L-1 and CB-H-1. (c1), (c2) carbonization was done at 1,000 °C in inert atmosphere for 1 h for fibers loaded with CB-L-2 and CB-H-2. All cyclic voltammograms were measured for the positive electrode reaction (V4+/V5+) at a scan rate of 2 mV s−1.

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