리튬 덴드라이트의 성장 반응에 미치는 공용매의 영향Effects of Co-solvent on Dendritic Lithium Growth Reaction
- Other Titles
- Effects of Co-solvent on Dendritic Lithium Growth Reaction
- Authors
- 강지훈; 정순기
- Issue Date
- 2013
- Publisher
- 한국수소및신에너지학회
- Keywords
- Dendritic lithium; Co-solvent; Solvation structure; Solvation number; Interfacial reaction; Negative electrode; 리튬 덴드라이트; 공용매; 용매화 구조; 용매화 수; 계면 반응; 음극
- Citation
- 한국수소및신에너지학회논문집, v.24, no.2, pp 172 - 178
- Pages
- 7
- Journal Title
- 한국수소및신에너지학회논문집
- Volume
- 24
- Number
- 2
- Start Page
- 172
- End Page
- 178
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/14456
- ISSN
- 1738-7264
2288-7407
- Abstract
- This study examined the electrochemical deposition and dissolution of lithium on nickel electrodes in 1 mol dm-3(M) LiPF6 dissolved in propylene carbonate (PC) containing different 1,2-dimethoxyethane (DME)concentrations as a co-solvent. The DME concentration was found to have a significant effect on the reactions occurring at the electrode. The poor cycleability of the electrodes in the pure PC solution was improved considerably by adding small amounts of DME. This results suggested that the dendritic lithium growth could be suppressed by using co-solvents. After hundredth cycling in the 1 M LiPF6 / PC:DME (67:33) solution, almost no dead lithium has been found from the disassembled cell, resulting from suppression of dendritic lithium growth. Scanning electron microscopy revealed that dendritic lithium formation was greatly affected by the ratio of DME. Raman spectroscopy results suggested that the structure of solvated lithium ions is a crucial important factor in suppressing dendritic lithium formation.
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Collections - SCH Media Labs > Department of Energy Systems Engineering > 1. Journal Articles
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