Shedding Light on the Oxygen Reduction Reaction Mechanism in Ether-Based Electrolyte Solutions: A Study Using Operando UV-Vis Spectroscopy
- Title
- Shedding Light on the Oxygen Reduction Reaction Mechanism in Ether-Based Electrolyte Solutions: A Study Using Operando UV-Vis Spectroscopy
- Author
- 선양국
- Keywords
- UV-vis spectroscopy; oxygen reduction reactions (ORRs); LiTFSI/diglyme electrolyte solutions; Li-polymer batteries; cyclic voltammetiry (CV) curves
- Issue Date
- 2018-04
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v. 10, no. 13, page. 10860-10869
- Abstract
- Using UV-vis spectroscopy in conjunction with various electrochemical techniques, we have developed a new effective operando methodology for investigating the oxygen reduction reactions (ORRs) and their mechanisms in nonaqueous solutions. We can follow the in situ formation and presence of superoxide moieties during ORR as a function of solvent, cations, anions, and additives in the solution. Thus, using operando UV-vis spectroscopy, we found evidence for the formation of superoxide radical anions during oxygen reduction in LiTFSI/diglyme electrolyte solutions. Nitro blue tetrazolium (NBT) was used to indicate the presence of superoxide moieties based on its unique spectral response. Indeed, the spectral response of NBT containing solutions undergoing ORR could provide a direct indication for the level of association of the Li cations with the electrolyte anions.
- URI
- https://pubs.acs.org/doi/10.1021/acsami.7b18376https://repository.hanyang.ac.kr/handle/20.500.11754/118351
- ISSN
- 1944-8244; 1944-8252
- DOI
- 10.1021/acsami.7b18376
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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