수용액중 아연 덴드라이트의 성장 반응에 미치는 전해질 농도의 영향Effects of Electrolyte Concentration on Growth of Dendritic Zinc in Aqueous Solutions
- Other Titles
- Effects of Electrolyte Concentration on Growth of Dendritic Zinc in Aqueous Solutions
- Authors
- 신경희; 정규남; 연순화; 심준목; 전재덕; 진창수; 김양수; 박경수; 정순기; 윤수근
- Issue Date
- 2012
- Publisher
- 한국수소및신에너지학회
- Keywords
- 아연-공기 전지; 아연 덴드라이트; 음극; 전해질; Zn-air battery; Dendritic zinc; Negative electrode; Electrolyte
- Citation
- 한국수소및신에너지학회논문집, v.23, no.4, pp 390 - 396
- Pages
- 7
- Journal Title
- 한국수소및신에너지학회논문집
- Volume
- 23
- Number
- 4
- Start Page
- 390
- End Page
- 396
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/15678
- DOI
- 10.7316/KHNES.2012.23.4.390
- ISSN
- 1738-7264
2288-7407
- Abstract
- In order to understand the nature of dendritic zinc growth, electrochemical zinc redox reaction on nickel plate was investigated in aqueous solutions containing different concentrations, 0.2, 0.1 and 0.02 mol・dm-3 (M), of zinc sulfate (ZnSO4) or zinc chloride (ZnCl2). Zinc ion was efficiently reduced and oxidized on nickel in the high-concentration (0.2 M) solution, whereas relatively poor efficiency was obtained from the other low-concentration solutions (0,1 and 0.02 M). Cyclic voltammetry (CV) analysis revealed that the 0.2 M electrolyte solution decomposes at more positive potentials than the 0.1 and the 0.02 M solutions. These results suggested that the concentration of electrolyte solution and anion would be an important factor that suppresses the reaction of the zinc dendrite formation. Scanning Electron Microscopy (SEM) data revealed that the shape of dendritic zinc and its growing behavior were also influenced by electrolyte concentration.
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