| Autor: |
Yuko YOKOYAMA, Mitsuo KAWASAKI, Takeshi ABE, Zempachi OGUMI, Kenji KANO |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Electrochemistry, Vol 91, Iss 3, Pp 037006-037006 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2186-2451 |
| DOI: |
10.5796/electrochemistry.23-00001 |
| Popis: |
Fluoride shuttle batteries are expected to be innovative with high energy density superior to lithium-ion ones as on-board power-source for electric vehicles. However, the low solubility of fluoride ion in organic solvents makes it difficult to choose electrolytes. Kawasaki et al. have reported that no precipitation appears in γ-butyrolactone solution of CsF at high concentrations in the presence of excess amounts of Li+ or Mg2+ cation [M. Kawasaki, et al., J. Electrochem. Soc., 169, 110508 (2022).]. Such solutions are called hybrid electrolyte ones. In this study, we performed conductometric titration of Li+- or Mg2+-containing solutions with CsF solutions to elucidate the ion equilibrium. The titration curves were analyzed on models including precipitation of LiF or MgF2 and formation of Li2F+ and LiF2− triple ion or MgF+ associated one to evaluate the corresponding equilibrium constants. The results indicate that no precipitation appears in certain ranges of the F−/Li+ or F−/Mg2+ molar ratio by the triple/associated ion formation. Details of the conductometric analysis are discussed together with some problems involved in the proposed method. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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