Abstract
The dissolution of polysulfides from the cathode remains a key roadblock in the advancement of Li-S batteries. To prevent polysulfide dissolution and improve the performance of Li-S battery, PANi-coated sulfur cathode is prepared using 2L reaction vessel. Using the different sulfur ratio, the performance test is conducted, which results that 33 wt% sulfur PANi composite shows best performance. The PANi-coated sulfur composite cathode was composed of 70 wt% of the PANi-coated sulfur composite, 20 wt% of vapor grown carbon fiber, and 10 wt% of binder (kynar 761). The bare sulfur cathode also had a similar composition (70 wt% of sulfur, 20 wt% of vapor-grown carbon fiber, and 10 wt% of binder (kynar 761)). The sulfur loading of the electrodes was about 4.5 mg cm-2. The electrode slurry was coated on an aluminum sheet (15 µm).
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