| 학회 | 한국공업화학회 |
| 학술대회 | 2022년 봄 (05/11 ~ 05/13, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 | 26권 1호 |
| 발표분야 | 포스터-에너지저장·변환 |
| 제목 | 30 Li+-accommodating covalent organic frameworks as ultralong cyclable high-capacity Li-ion battery electrodes |
| 초록 | Covalentorganic frameworks (COFs) have attracted considerable attention as a facile andversatile design platform for advanced energy storage materials owing to theirstructural diversity, ordered porous structures, and chemical stability. Inthis study, a redox-active COF (TP–OH–COF) that can accommodate 30 Li+ions is synthesized for potential use as an ultralong cyclable high-capacitylithium-ion battery electrode material. The TP–OH–COF is synthesized usingtriformylpholoroglucinol and 2,5-diaminohydroquinone dihydrochloride undersolvothermal conditions. The accommodation of such exceptional Li+ion content in the TP–OH–COF is achieved by alternately tethering redox-activehydroxyl and carbonyl sites on the pore walls. Owing to this uniquechemical/structural feature, the TP–OH–COF delivers a high specific capacity of764.1 mAh g–1, and capacity retention of 63% after 8000 cycles at afast current density of 5.0 A g–1. |
| 저자 | Zhongping Li, 이상영 |
| 소속 | 연세대 |
| 키워드 | Covalent organic frameworks; high capacity; lithium-ion batteries; redox-active carbonyl sites |
