Effects of Fluorine Doping on Electrochemical Performance of Spinel-Layered Li3Mn3O7.5-xFx as Cathode Materials for Li-Ion Batteries
- Title
- Effects of Fluorine Doping on Electrochemical Performance of Spinel-Layered Li3Mn3O7.5-xFx as Cathode Materials for Li-Ion Batteries
- Author
- 임원빈
- Keywords
- Batteries; Batteries - Lithium; Energy Storage; Li-ion battery; Li2MnO3; spinel-layered
- Issue Date
- 2019-05
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v. 166, NO 8, Page. 1568-1573
- Abstract
- A simple synthesis procedure for solid-state reactions at an intermediate temperature (500°C) is applied to synthesize F-doped spinel-layered 0.5Li2MnO3•0.5Li4Mn5O12 (Li3Mn3O7.5-xFx with x = 0, 0.05, 0.1, and 0.2). The F-doping does not affect the crystal structure or the morphology of the pristine sample. However, F-doping increases theMn3+ content, leading to an improved electronic conductivity and a lower charge-transfer resistance. In addition, F-doping also reduces the difference of voltage between the oxidation and reduction processes, and enhances the Li+ diffusion coefficient (with a maximum four times higher than that of the pristine sample). Consequently, the capacity and rate capability of the cathode are improved by F-doping (the x = 0.1 sample can provide a high capacity of 300 mAh g−1 at C/10).
- URI
- http://jes.ecsdl.org/content/166/8/A1568https://repository.hanyang.ac.kr/handle/20.500.11754/111643
- ISSN
- 0013-4651
- DOI
- 10.1149/2.0861908jes
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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