Research Article
Graphene/Sulfur@Graphene Composite Structure Material for a Lithium-Sulfur Battery Cathode
Table 1
Impedance parameters of Li-S coin cells with S, G/S, and G/S-G cathodes before discharge and after cycles.
| Cathode | (Ω) | (Ω) |
| S (before discharge) | 14.67 | 257.00 | G/S (before discharge) | 6.78 | 174.00 | G/S-G (before discharge) | 18.05 | 147.00 | S (after the 100th cycle) | 20.24 | 157.00 | G/S (after the 200th cycle) | 3.49 | 83.60 | G/S-G (after the 200th cycle) | 3.99 | 67.20 |
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