Dynamics of a room temperature ionic liquid under applied pressure

Osti, Naresh C.; Haberl, Bianca; Jalarvo, Niina H.; Boehler, Reinhard; Molaison, Jamie J.; Goyette, Rick J.; Mamontov, Eugene

doi:10.1016/j.chemphys.2019.110628

Title: Dynamics of a room temperature ionic liquid under applied pressure

Full Record
Other Related Research

Abstract

We report that room temperature ionic liquids (RTILs) have shown great potential in a wide range of applications, especially as novel electrolytes for energy generation. Understanding microscopic dynamics under variable environmental conditions provides critical knowledge of the microscopic interactions in RTILs, which are closely linked to their functionality. Here, we investigate a response of a RTIL, EmimTFSI, to application of a high pressure, up to 1.0 GPa, using quasi-elastic neutron scattering, Raman and X-ray scattering. The ionic liquid transitions from a liquid to a solid state at above ~0.5 GPa and returns to its liquid state following full decompression. However, following such pressure application, the resulting liquid no longer possesses either cations, or anions, as individual entities, as evident from quasi-elastic scattering and Raman scattering results, respectively. We suggest that a possible cause for this behavior could be dimerization of ions, which needs to be considered when designing RTILs for moderate high-pressure applications.

Authors:

^[1];

^[2]; Boehler, Reinhard ^[3];

^[1]; Goyette, Rick J. ^[1];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Juelich Center for Neutron Scattering (Germany)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Carnegie Inst. for Sciences, Washington, DC (United States)

Publication Date:: 2019-11-15

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1607280

Alternate Identifier(s):: OSTI ID: 1702179

Grant/Contract Number:: AC05-00OR22725; NA0001974; AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Chemical Physics

Additional Journal Information:: Journal Volume: 530; Journal Issue: C; Journal ID: ISSN 0301-0104

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Osti, Naresh C., Haberl, Bianca, Jalarvo, Niina H., Boehler, Reinhard, Molaison, Jamie J., Goyette, Rick J., and Mamontov, Eugene. Dynamics of a room temperature ionic liquid under applied pressure.  United States: N. p., 2019. 
Web.  https://doi.org/10.1016/j.chemphys.2019.110628.

Copy to clipboard


                    Osti, Naresh C., Haberl, Bianca, Jalarvo, Niina H., Boehler, Reinhard, Molaison, Jamie J., Goyette, Rick J., & Mamontov, Eugene. Dynamics of a room temperature ionic liquid under applied pressure.  United States.  https://doi.org/10.1016/j.chemphys.2019.110628

Copy to clipboard


                    Osti, Naresh C., Haberl, Bianca, Jalarvo, Niina H., Boehler, Reinhard, Molaison, Jamie J., Goyette, Rick J., and Mamontov, Eugene. Fri .  
"Dynamics of a room temperature ionic liquid under applied pressure".  United States.  https://doi.org/10.1016/j.chemphys.2019.110628.  https://www.osti.gov/servlets/purl/1607280.

Copy to clipboard


                    
@article{osti_1607280,

  title        = {Dynamics of a room temperature ionic liquid under applied pressure},

  author       = {Osti, Naresh C. and Haberl, Bianca and Jalarvo, Niina H. and Boehler, Reinhard and Molaison, Jamie J. and Goyette, Rick J. and Mamontov, Eugene},

  abstractNote = {We report that room temperature ionic liquids (RTILs) have shown great potential in a wide range of applications, especially as novel electrolytes for energy generation. Understanding microscopic dynamics under variable environmental conditions provides critical knowledge of the microscopic interactions in RTILs, which are closely linked to their functionality. Here, we investigate a response of a RTIL, EmimTFSI, to application of a high pressure, up to 1.0 GPa, using quasi-elastic neutron scattering, Raman and X-ray scattering. The ionic liquid transitions from a liquid to a solid state at above ~0.5 GPa and returns to its liquid state following full decompression. However, following such pressure application, the resulting liquid no longer possesses either cations, or anions, as individual entities, as evident from quasi-elastic scattering and Raman scattering results, respectively. We suggest that a possible cause for this behavior could be dimerization of ions, which needs to be considered when designing RTILs for moderate high-pressure applications.},

  doi          = {10.1016/j.chemphys.2019.110628},

  journal      = {Chemical Physics},

  number       = C,

  volume       = 530,

  place        = {United States},

  year         = {2019},

  month        = {11}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1016/j.chemphys.2019.110628

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 2 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Engineering the Interlayer Spacing by Pre-Intercalation for High Performance Supercapacitor MXene Electrodes in Room Temperature Ionic Liquid

Journal Article Liang, Kun ; Matsumoto, Ray A. ; Zhao, Wei ; ... - Advanced Functional Materials

MXenes exhibit excellent capacitance at high scan rates in sulfuric acid aqueous electrolytes, but the narrow potential window of aqueous electrolytes limits the energy density. Organic electrolytes and room-temperature ionic liquids (RTILs) can provide higher potential windows, leading to higher energy density. The large cation size of RTIL hinders its intercalation in-between the layers of MXene limiting the specific capacitance in comparison to aqueous electrolytes. In this work, different chain lengths alkylammonium (AA) cations are intercalated into Ti₃C₂T_x, producing variation of MXene interlayer spacings (d-spacing). AA-cation-intercalated Ti₃C₂T_x (AA-Ti₃C₂), exhibits higher specific capacitances, and cycling stabilities than pristine Ti₃C₂T_x in 1more »« less
https://doi.org/10.1002/adfm.202104007
Metal electrodeposition and electron transfer studies of uranium compounds in room temperature ionic liquids.

Conference Stoll, M E ; Oldham, W J ; Costa, D A

Room temperature ionic liquids (RTIL's) comprised of 1,3-dialkylimidazolium or quaternary ammonium cations and one of several anions such as PF{sub 6}{sup -}, BF{sub 4}{sup -}, or {sup -}N(SO{sub 2}CF{sub 3}){sub 2}, represent a class of solvents that possess great potential for use in applications employing electrochemical procedures. Part of the intrigue with RTIL's stems from some of their inherent solvent properties including negligible vapor pressure, good conductivity, high chemical and thermal stability, and non-flammability. Additionally, a substantial number of RTIL's can be envisioned simply by combining different cation and anion pairs, thereby making them attractive for specific application needs. Wemore »« less
Full Text Available
Contracting cardiomyocytes in hydrophobic room-temperature ionic liquid

Journal Article Hoshino, Takayuki ; Department of Bio-Application and System Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei-shi, Tokyo 184-8588 ; Fujita, Kyoko ; ... - Biochemical and Biophysical Research Communications

Highlights: Black-Right-Pointing-Pointer Biocompatible room-temperature ionic liquid was applied on beating cardiomyocyte. Black-Right-Pointing-Pointer The lifetime of beating cardiomyocytes was depended on anion functional group. Black-Right-Pointing-Pointer A longer lifetime was recorded for no functional group on alkyl chain on their anion. Black-Right-Pointing-Pointer Amino group on alkyl chain and fluorine in anion induced fatal condition changes. Black-Right-Pointing-Pointer We reported liquid electrolyte interface to stimulate cardiomyocytes. -- Abstract: Room-temperature ionic liquids (RTILs) are drawing attention as a new class of nonaqueous solvents to replace organic and aqueous solvents for chemical processes in the liquid phase at room temperature. The RTILs are notable for theirmore »« less
https://doi.org/10.1016/J.BBRC.2012.09.068
Diffusivity and Structure of Room Temperature Ionic Liquid in Various Organic Solvents

Journal Article Cui, Jinlei ; Kobayashi, Takeshi ; Sacci, Robert L. ; ... - Journal of Physical Chemistry. B, Condensed Matter, Materials, Surfaces, Interfaces and Biophysical Chemistry

Room-temperature ionic liquids (RTILs) hold promise for applications in electric double layer capacitors (EDLCs), owing to a much wider potential window, lower vapor pressure, and better thermal and chemical stabilities compared to conventional aqueous and organic electrolytes. However, because the low diffusivity of ions in neat RTILs negates the EDLCs’ advantage of high power density, the ionic liquids are often used in mixture with organic solvents. In this study, we measured the diffusivity of cations and anions in RTIL, 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) ([BMIM⁺][TFSI^–]), mixed with 10 organic solvents, by using the pulsed-field gradient NMR method. The ion diffusivity was found tomore »« less
https://doi.org/10.1021/acs.jpcb.0c07582
Structure and dynamics of POPC bilayers in water solutions of room temperature ionic liquids

Journal Article Benedetto, Antonio ; Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen ; Bingham, Richard J. ; ... - Journal of Chemical Physics

Molecular dynamics simulations in the NPT ensemble have been carried out to investigate the effect of two room temperature ionic liquids (RTILs), on stacks of phospholipid bilayers in water. We consider RTIL compounds consisting of chloride ([bmim][Cl]) and hexafluorophosphate ([bmim][PF{sub 6}]) salts of the 1-buthyl-3-methylimidazolium ([bmim]{sup +}) cation, while the phospholipid bilayer is made of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC). Our investigations focus on structural and dynamical properties of phospholipid and water molecules that could be probed by inelastic and quasi-elastic neutron scattering measurements. The results confirm the fast incorporation of [bmim]{sup +} into the lipid phase already observed in previous simulations, drivenmore »« less
https://doi.org/10.1063/1.4915918

Similar Records