| 초록 |
Recently, sodium-ion batteries using organic cathodes have been considered as a promising next-generation battery owing to low cost, high natural abundance, sustainability, and high capacity. In this study, we present triptycene tribenzoquinone (TT) as an organic cathode material for sodium-ion batteries. Due to multi-electron redox reactions and minimized redox-inactive molecular weight, triptycene tribenzoquinone provides a specific capacity as high as 367 mAh g-1 in sodium-ion coin cells. However, its cycle stability is very poor in conventional liquid electrolytes due to high solubility. To improve the cycle performance, we make comparative studies on optimizing ionic liquid electrolytes and fabricating composites with carbon nanomaterials. |
