| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 봄 (04/08 ~ 04/10, 대전컨벤션센터) |
| 권호 |
40권 1호 |
| 발표분야 |
대학원생 구두발표 (영어발표, 발표15분) |
| 제목 |
Surface Modification of Sulfur Electrodes via Layer-by-Layer Deposition for the High Capacity Retention in Li-S Batteries |
| 초록 |
Surface modification of sulfur electrodes using the layer-by-layer (LbL) deposition technique was investigated for the enhanced capacity retention in Li-S batteries. Sulfur is currently regarded as one of the most promising cathode materials for nexgen batteries due to its large energy capacity. However, the capacity of sulfur cathodes, in general, continuously decreases during repeated charge-discharge cycles. In order to address these critical issues, the surfaces of sulfur cathodes were passivated with polyelectrolyte LbL multilayers, which could prevent the polysulfides from dissolving into electrolytes, while lithium ions could easily pass through the layers. The capacity retention of Li-S batteries with multilayer passivation was found to be improve as a function of multilayer thickness. |
| 저자 |
김의태1, 박정진1, 성영은1, Jeffrey Pyun2, 차국헌3
|
| 소속 |
1서울대, 2Dept. of Chemistry, 3Univ. of Arizona |
| 키워드 |
sulfur; layer-by-layer; polyelectrolyte; lithium batteries
|
| E-Mail |
|
