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Synergetic Effect of Ethyl Methyl Carbonate and Trimethyl Phosphate on BF4–Intercalation into a Graphite Electrode
- Source :
- Langmuir; March 2019, Vol. 35 Issue: 11 p3972-3979, 8p
- Publication Year :
- 2019
-
Abstract
- LiBF4–ethyl methyl carbonate (EMC)-based solutions have not been successfully employed in dual-ion batteries (DIBs) mainly on account of few solvated BF4–intercalations into graphite positive electrodes. In this article, trimethyl phosphate (TMP) is introduced into 1 M LiBF4–EMC solution as the electrolyte solution for DIBs, thus revealing a synergetic effect in which the discharge capacity for the anion storage using 1 M LiBF4–EMC/TMP (8:2 by vol) (ca. 26.7 mA h g–1) is far superior to that for the batteries using 1 M LiBF4–EMC (ca. 2.7 mA h g–1) or 1 M LiBF4–TMP (ca. 1.1 mA h g–1). In this case, the effects of TMP on LiBF4in 1 M LiBF4–EMC/TMP electrolyte solutions are explored by conventional electrochemical tests, ex situ X-ray diffraction, in situ Raman spectroscopy, and nuclear magnetic resonance.
Details
- Language :
- English
- ISSN :
- 07437463 and 15205827
- Volume :
- 35
- Issue :
- 11
- Database :
- Supplemental Index
- Journal :
- Langmuir
- Publication Type :
- Periodical
- Accession number :
- ejs48739689
- Full Text :
- https://doi.org/10.1021/acs.langmuir.9b00262