| 학회 |
한국재료학회 |
| 학술대회 |
2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 |
26권 1호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
A unique F-doping mechanism on Extended Conjugated Carbon System for stabilizing Li Metal Anode |
| 초록 |
Li metal is suitable as anode material for next-generation Li ion-based batteries (LIBs) due to high theoretical specific capacity and low redox potential. However, due to the highly reactive nature of Li metal, its surface forms an unstable solid electrolyte intherphase (SEI), hindering its application as a LIB anode. In this study, “Graphene-coated Aramid fibers attached to uncoated Aramid” (GAA) separators with conductive extended conjugated carbon (ECC) network were applied to Li metal anode for alleviating these issues caused by the unstable SEI through the unique F-doping mechanism. The graphene coating layer was partially fluorinated in a specific solvent environment, and as Li+ ion was plated, the fluorinated surface induced LiF as a chemically stable SEI component. Also, the applicability of the F-doping mechanism was generalized to other ECC systems. The experimental results indicated that the negative functionalities and lattice structure of ECC systems did affect the surface fluorination. Based on this generalization, an efficient method for stabilizing Li metal surface by using pencil was developed. |
| 저자 |
Seonmi Pyo1, Yong Jun Gong2, Hyunjin Kim3, Jinil Cho1, Heejun Yun2, Heebae Kim3, Jeeyoung Yoo1, Youn Sang Kim2
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| 소속 |
1Program in Nano Science and Technology, 2Graduate School of Convergence Science and Technology, 3Seoul National Univ. |
| 키워드 |
Li Ion Batteries (LIBs); Electrodes; Functional separator; Doping; Fulorination.
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| E-Mail |
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