| 초록 |
Lithium sulfur battery has been focused more because of the higher needs for clean energy in ESS (energy storage system) or xEV (electric vehicle). The recent study was mainly focused on the performance and potimization by improving material and cell chemistry preventing polysulfide dissolution. The factors influence on the performance including cycling and rate characteristice are various, and the effects are shown differently according to what factor in is. Here we investigated the factors effect on rate capability and cycle life. We basically tested using PANi-coated sulfur composite and found out the particle size affect differently on cycle and rate performance. With the particle size we investigate of the carbon coating on sulfur and salt concentration with electrolyte. The rate and cycling performance according to salt concentration show differently with electrolyte and electrode composition. Our results imply the factors like particle, coating material and salt concentration including electrode affects differently on the rate performance. |
