| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
고분자가공/복합재료 |
| 제목 |
Improved electrochemical performance of lithium-sulfur battery through the deposition of functional hybrid layer on the cathode |
| 초록 |
The loss of sulfur through the polysulfide dissolution causes a significant capacity reduction of the lithium-sulfur (Li-S) battery during the charge-discharge reactions, thereby debilitating the electrochemical performance of the cell. We have addressed this problem by direct coating functional hybrid layer of graphene oxide (GO) or polyethylene oxide (PEO) on the cathode of Li-S battery (sulfur: 60 %). The external functional layer not only alleviates the dissolution of the polysulfide electrolyte during the charging/discharging through physical layer formation, but also chemically interact with the polysulfide and the functional layers. As-formed Li-S battery exhibits stable cycling electrochemical performance during charging and discharging at a reversible capacity of 700~1187 mAh/g at 0.1 C (1 C = 1675 mA/g) for 30 cycles or more. |
| 저자 |
손희상, 손희상
|
| 소속 |
광운대 |
| 키워드 |
Li-S battery; Polysulfide dissolution; Electrode coating; Graphene oxide; Polyethylene oxide |
| E-Mail |
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