Research Article
Effects of Carbon Fiber Compression Ratio and Electrolyte Flow Rate on the Electrochemical Performance of Vanadium Redox Batteries
Table 3
The influence of compression ratio and flow rate on battery overpotential.
| CR(%) | PV(V) | ε | | Q (m3s−1) | V (ms−1) | K (ms−1) | (Am−2) | (mV) | (cm2) |
| 10 | 2 | 1.052 | 1.10 | 1.06 × 10−7 | 6.15 × 10−4 | 8.32 × 10−6 | 1292 | 38.23 | 1.91 | 3 | 1.052 | 1.10 | 2.58 × 10−7 | 1.50 × 10−3 | 1.19 × 10−5 | 1844 | 20.08 | 1.615 | 4 | 1.052 | 1.10 | 4.05 × 10−7 | 2.35 × 10−3 | 1.42 × 10−5 | 2208 | 15.49 | 1.465 | 5 | 1.052 | 1.10 | 7.81 × 10−7 | 4.54 × 10−3 | 1.85 × 10−5 | 2872 | 11.00 | 1.36 |
| 20 | 2 | 0.976 | 1.08 | 0.97 × 10−7 | 6.71 × 10−4 | 8.61 × 10−6 | 1337 | 35.42 | 1.32 | 3 | 0.976 | 1.08 | 2.57 × 10−7 | 1.78 × 10−3 | 1.27 × 10−5 | 1974 | 18.15 | 1.08 | 4 | 0.976 | 1.08 | 3.89 × 10−7 | 2.69 × 10−3 | 1.50 × 10−5 | 2330 | 14.41 | 0.94 | 5 | 0.976 | 1.08 | 5.56 × 10−7 | 3.85 × 10−3 | 1.73 × 10−5 | 2688 | 11.95 | 0.9 |
| 30 | 2 | 0.944 | 1.06 | 0.88 × 10−7 | 7.06 × 10−4 | 8.78 × 10−6 | 1364 | 33.93 | 1.17 | 3 | 0.944 | 1.06 | 2.08 × 10−7 | 1.67 × 10−3 | 1.24 × 10−5 | 1924 | 18.84 | 1.04 | 4 | 0.944 | 1.06 | 3.23 × 10−7 | 2.59 × 10−3 | 1.48 × 10−5 | 2295 | 14.70 | 0.89 | 5 | 0.944 | 1.06 | 5.08 × 10−7 | 4.07 × 10−3 | 1.77 × 10−5 | 2751 | 11.61 | 0.84 |
| 60 | 2 | 0.794 | 1.02 | 0.20 × 10−7 | 3.21 × 10−4 | 6.41 × 10−6 | 996 | - | 1.1 | 3 | 0.794 | 1.02 | 0.48 × 10−7 | 7.70 × 10−4 | 9.10 × 10−6 | 1413 | 31.60 | 0.74 | 4 | 0.794 | 1.02 | 1 × 10−7 | 1.60 × 10−3 | 1.22 × 10−5 | 1895 | 19.27 | 0.66 | 5 | 0.794 | 1.02 | 1.96 × 10−7 | 3.14 × 10−3 | 1.60 × 10−5 | 2481 | 13.26 | 0.65 |
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