1
|
Smith CJ, Gehrke S, Hollóczki O, Wagle DV, Heitz MP, Baker GA. NMR relaxometric probing of ionic liquid dynamics and diffusion under mesoscopic confinement within bacterial cellulose ionogels. J Chem Phys 2018; 148:193845. [PMID: 30307178 DOI: 10.1063/1.5016337] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Chip J. Smith
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, USA
| | - Sascha Gehrke
- Mulliken Center for Theoretical Chemistry, University of Bonn, Beringstr. 4+6, Bonn 53115, Germany
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, Muelheim an der Ruhr 45470, Germany
| | - Oldamur Hollóczki
- Mulliken Center for Theoretical Chemistry, University of Bonn, Beringstr. 4+6, Bonn 53115, Germany
| | - Durgesh V. Wagle
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, USA
| | - Mark P. Heitz
- Department of Chemistry and Biochemistry, The College at Brockport SUNY, Brockport, New York 14420, USA
| | - Gary A. Baker
- Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, USA
| |
Collapse
|
2
|
Tulibaeva GZ, Shestakov AF, Volkov VI, Yarmolenko OV. Structure of LiBF4 Solvate Complexes in Ethylene Carbonate, Based on High-Resolution NMR and Quantum-Chemical Data. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024418040313] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
3
|
See KA, Wu HL, Lau KC, Shin M, Cheng L, Balasubramanian M, Gallagher KG, Curtiss LA, Gewirth AA. Effect of Hydrofluoroether Cosolvent Addition on Li Solvation in Acetonitrile-Based Solvate Electrolytes and Its Influence on S Reduction in a Li-S Battery. ACS APPLIED MATERIALS & INTERFACES 2016; 8:34360-34371. [PMID: 27998132 DOI: 10.1021/acsami.6b11358] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Li-S batteries are a promising next-generation battery technology. Due to the formation of soluble polysulfides during cell operation, the electrolyte composition of the cell plays an active role in directing the formation and speciation of the soluble lithium polysulfides. Recently, new classes of electrolytes termed "solvates" that contain stoichiometric quantities of salt and solvent and form a liquid at room temperature have been explored due to their sparingly solvating properties with respect to polysulfides. The viscosity of the solvate electrolytes is understandably high limiting their viability; however, hydrofluoroether cosolvents, thought to be inert to the solvate structure itself, can be introduced to reduce viscosity and enhance diffusion. Nazar and co-workers previously reported that addition of 1,1,2,2-tetrafluoroethyl 2,2,3,3-tetrafluoropropyl ether (TTE) to the LiTFSI in acetonitrile solvate, (MeCN)2-LiTFSI, results in enhanced capacity retention compared to the neat solvate. Here, we evaluate the effect of TTE addition on both the electrochemical behavior of the Li-S cell and the solvation structure of the (MeCN)2-LiTFSI electrolyte. Contrary to previous suggestions, Raman and NMR spectroscopy coupled with ab initio molecular dynamics simulations show that TTE coordinates to Li+ at the expense of MeCN coordination, thereby producing a higher content of free MeCN, a good polysulfide solvent, in the electrolyte. The electrolytes containing a higher free MeCN content facilitate faster polysulfide formation kinetics during the electrochemical reduction of S in a Li-S cell likely as a result of the solvation power of the free MeCN.
Collapse
Affiliation(s)
- Kimberly A See
- Joint Center for Energy Storage Research , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
- Department of Chemistry, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Heng-Liang Wu
- Joint Center for Energy Storage Research , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
- Department of Chemistry, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Kah Chun Lau
- Joint Center for Energy Storage Research , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
- Department of Physics and Astronomy, California State University , Northridge, California 91330, United States
| | - Minjeong Shin
- Joint Center for Energy Storage Research , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
- Department of Chemistry, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Lei Cheng
- Joint Center for Energy Storage Research , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Mahalingam Balasubramanian
- Joint Center for Energy Storage Research , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Kevin G Gallagher
- Joint Center for Energy Storage Research , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Larry A Curtiss
- Joint Center for Energy Storage Research , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Andrew A Gewirth
- Joint Center for Energy Storage Research , 9700 South Cass Avenue, Argonne, Illinois 60439, United States
- Department of Chemistry, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| |
Collapse
|
4
|
Wu TY, Su SG, Wang YH, Lin YC, Chang JK, Kuo CW, Sun IW. Diffusion coefficients, spin-lattice relaxation times, and chemical shift variations of NMR spectra in LiTFSI-doped ether- and allyl-functionalized dicationic ionic liquids. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.10.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
5
|
Tsao CH, Ueda M, Kuo PL. Synthesis and characterization of polymer electrolytes based on cross-linked phenoxy-containing polyphosphazenes. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27781] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Chih-Hao Tsao
- Department of Chemical Engineering; National Cheng Kung University; Tainan Taiwan 70101 Republic of China
| | - Mitsuru Ueda
- Department of Chemistry; Kanagawa University; 3-27-1 Rokkakubashi Kanagawa-ku Yokohama 221-8686 Japan
| | - Ping-Lin Kuo
- Department of Chemical Engineering; National Cheng Kung University; Tainan Taiwan 70101 Republic of China
| |
Collapse
|