탄산 에틸렌계 용액 중에서 생성되는 흑연 음극 표면피막의 형상 및 저항에 미치는 충방전 속도의 영향Effects of Charge-discharge Rate on Morphology and Resistance of Surface Film on a Graphite Negative Electrode in an Ethylene Carbonate-based Solution
- Other Titles
- Effects of Charge-discharge Rate on Morphology and Resistance of Surface Film on a Graphite Negative Electrode in an Ethylene Carbonate-based Solution
- Authors
- 정순기; 김보겸
- Issue Date
- 2013
- Publisher
- 한국수소및신에너지학회
- Keywords
- Graphite negative electrode; Surface film; Interfacial reaction; Charge-discharge rate; Ethylene carbonate; 흑연 음극; 표면피막; 계면 반응; 충방전 속도; 탄산 에틸렌
- Citation
- 한국수소및신에너지학회논문집, v.24, no.2, pp 179 - 185
- Pages
- 7
- Journal Title
- 한국수소및신에너지학회논문집
- Volume
- 24
- Number
- 2
- Start Page
- 179
- End Page
- 185
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/14435
- ISSN
- 1738-7264
2288-7407
- Abstract
- The behavior of surface film formation was greatly dependent on the speed of potential cycling. In LiClO4 / EC + DEC, cyclic voltammetry results showed that the peaks originated from surface film formation on graphite electrode at the high charge-discharge rate was shifted to the lower potentials as the charge-discharge rate decrease. This indicates that surface films with different morphology and thickness were formed by different charge-discharge rate. Transmission electron microscopy (TEM) results indicated that the properties such as thickness and morphology of the surface film were greatly affected by the charge-discharge rate. Electrochemical impedance spectroscopy (EIS) showed that the resistance of surface film was affected by the speed of potential cycling. In addition, the charge transfer resistance was also dependent on the charge-discharge rate indicating that the charge transfer reaction was affected by the nature of surface film. TEM and EIS results suggested that the chemical property as well as the physical property of the surface film was affected by the charge-discharge rate.
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