| 초록 |
To overcome the unfavorable lithium polysulfide shuttle problems, frequently found in a number of lithium-sulfur batteries, we prepared functional carbon-based aerogels embedded with transition metal oxide as an electrode material. The dissolution of LiPS can be effectively prevented by physical and chemical adsorption with the use of transition metal oxide. These carbon aerogels were impregnated with sulfur through both solution infiltration and melt-diffusion process. The sulfur content entrapped in the porous structure of the carbon aerogels, determined by TGA, ranged from approximately 50% to 80% in weight. The surface characteristics of the carbon aerogels were analyzed by various characterization methods. Their electrochemical properties were characterized by cyclic voltammetry, discharge-charge cycling test and impedance measurement. |
