| 초록 |
Lithium-sulfur batteries are drawing attention as one of the next generation batteries that will replace lithium-ion batteries. Although the high theoretical energy density and capacity are the main characteristics, the reduction in capacity due to the polysulfide shuttle effect is still difficult to put into practical use. As Cathode's structure materials, ZIF-8 and ZIF-67 have been studied in depth to prevent lithium polysulfide from dissolving in the electrolyte. Both MOFs have similar crystal structures and unit cell parameters and use the same ligand, so they can be easily synthesized with a bimetallic organic backbone structure. As an electrode material, a carbonization process and hydrothermal synthesis at 800 °C were used to improve performance. To demonstrate these results, the electrochemical properties have been evaluated by various electrochemical analyzes, including cyclic voltammetry between carbonization and non-carbonization. |
