2004
DOI: 10.1039/b315475k
|View full text |Cite
|
Sign up to set email alerts
|

Raman study of crystalline solvates between glymes CH3(OCH2CH2)nOCH3(n = 1, 2 and 3) and LiClO4

Abstract: The Raman spectra of various crystalline complexes formed between LiClO 4 and poly(ethylene glycol) dimethyl ether oligomers CH 3 (OCH 2 CH 2 ) n OCH 3 with n ¼ 1, 2 and 3 have been investigated in order to establish a clear vibrational assignment for the anion involved in typical solvent-separated ion pair, contact ion pair (with monodentate or bidentate coordination to the cation) and aggregate solvates. The Raman spectrum of the pure LiClO 4 salt has also been recorded for comparison.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1

Citation Types

2
49
0

Year Published

2006
2006
2023
2023

Publication Types

Select...
7
1

Relationship

2
6

Authors

Journals

citations
Cited by 27 publications
(51 citation statements)
references
References 22 publications
2
49
0
Order By: Relevance
“…In addition to this anion band near 740 cm −1 , another anion Raman band positioned near 1240−1255 cm −1 has also been examined in the present study (Supporting Information Figures S4−S6, S8, and S9) to aid in the assignment of the band positions for the uncoordinated TFSI − anion and the anion coordinated to 1 :LiTFSI, (f) AGG-IIb-C 1 (2,6-DMPy) 1/2 :LiTFSI, (g) AGG-IIb-C 2 (EC) 1 :LiTFSI, and (h) AGG-III-C 2 pure LiTFSI (the dark lines indicate that a phase transition has occurredi.e., melting). Note that the additional Raman bands in the spectra for a, c, d, f, and g are due to solvent vibrational bands.…”
Section: Chart 2 Structures and Acronyms Of The Solvents Studiedmentioning
confidence: 97%
See 2 more Smart Citations
“…In addition to this anion band near 740 cm −1 , another anion Raman band positioned near 1240−1255 cm −1 has also been examined in the present study (Supporting Information Figures S4−S6, S8, and S9) to aid in the assignment of the band positions for the uncoordinated TFSI − anion and the anion coordinated to 1 :LiTFSI, (f) AGG-IIb-C 1 (2,6-DMPy) 1/2 :LiTFSI, (g) AGG-IIb-C 2 (EC) 1 :LiTFSI, and (h) AGG-III-C 2 pure LiTFSI (the dark lines indicate that a phase transition has occurredi.e., melting). Note that the additional Raman bands in the spectra for a, c, d, f, and g are due to solvent vibrational bands.…”
Section: Chart 2 Structures and Acronyms Of The Solvents Studiedmentioning
confidence: 97%
“…There are differences, however, in the conformations of the anions. The (EC) 1 :LiTFSI solvate has anions with the C 2 conformation (i.e., AGG-IIb-C 2 , Chart 1), whereas the (AN) 1 :LiTFSI and (2,6-DMPy) 1/2 :LiTFSI solvates have anions with the C 1 conformation (i.e., AGG-IIb-C 1 , Chart 1). (Figure 3) is due to the expansion and contraction of the entire anion.…”
Section: Chart 2 Structures and Acronyms Of The Solvents Studiedmentioning
confidence: 99%
See 1 more Smart Citation
“…[24][25][26][27] Meanwhile, highly concentrated Li salt-glyme mixtures emerged as a new family of ionic liquids. At an early stage from the late 1990's to 2000's, they were studied as an amorphous analogue of Li + -conducting solid polymer electrolytes based on poly(ethylene oxide) (PEO), [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43] whose phase behavior and solvate structures were scrutinized by Henderson et al [33][34][35][36][37][38][39][40][41][42] From 2010 onward, Watanabe and his co-workers successively reported various physicochemical features analogous to ionic liquids in specific Li salt-glyme equimolar complexes, and established a new class of ionic liquids named "solvate ionic liquids" with clear classification criteria. 60 This review summarizes research activities on highly concentrated electrolytes for Li-based batteries.…”
mentioning
confidence: 99%
“…Thus, it is considered that the electrode surface is covered dominantly with BMP + and that [Li(TFSA) 2 ] can not access to the electrode surface. Since the donor numbers of glyme are larger than that of TFSA as listed in Table 1, Li + is expected to be coordinated by the glymes to give a positively charged species [6][7][8][9][10][11][12][13], which can approach to the electrode surface. Thus, Li + -glyme complexes are considered to be adsorbed on the electrode surface together with BMP + .…”
mentioning
confidence: 99%