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Absorbed Water

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Eugene Mamontov – One of the best experts on this subject based on the ideXlab platform.

  • humidity exposure enhances microscopic mobility in a room temperature ionic liquid in mxene
    Journal of Physical Chemistry C, 2018
    Co-Authors: Naresh C Osti, Matthew Thompson, Katherine L Van Aken, Mohamed Alhabeb, Madhusudan Tyagi, Jongkahk Keum, Peter T Cummings, Yury Gogotsi, Eugene Mamontov

    Abstract:

    Present and future electrochemical devices employing advanced electrode and electrolyte materials are expected to operate in diverse environments, where they are exposed to variable conditions, such as changing humidity levels. Such conditions can possibly alter the microscopic mechanisms that influence the electrochemical performance. Here, using quasi-elastic neutron scattering and molecular dynamics simulations, we investigate the influence of humidity exposure on a room-temperature ionic liquid, [EMIm+][Tf2N–], in Ti3C2Tx MXene. Absorbed Water enhances the microscopic mobility of confined [EMIm+][Tf2N–], even though the ionic liquid itself is not very hygroscopic. The Absorbed Water molecules predominantly reside on the termination groups of the more hydrophilic MXene layers, thereby displacing the ions from the surface and facilitating their motions in the MXene matrix.

Madhusudan Tyagi – One of the best experts on this subject based on the ideXlab platform.

  • humidity exposure enhances microscopic mobility in a room temperature ionic liquid in mxene
    Journal of Physical Chemistry C, 2018
    Co-Authors: Naresh C Osti, Matthew Thompson, Katherine L Van Aken, Mohamed Alhabeb, Madhusudan Tyagi, Jongkahk Keum, Peter T Cummings, Yury Gogotsi, Eugene Mamontov

    Abstract:

    Present and future electrochemical devices employing advanced electrode and electrolyte materials are expected to operate in diverse environments, where they are exposed to variable conditions, such as changing humidity levels. Such conditions can possibly alter the microscopic mechanisms that influence the electrochemical performance. Here, using quasi-elastic neutron scattering and molecular dynamics simulations, we investigate the influence of humidity exposure on a room-temperature ionic liquid, [EMIm+][Tf2N–], in Ti3C2Tx MXene. Absorbed Water enhances the microscopic mobility of confined [EMIm+][Tf2N–], even though the ionic liquid itself is not very hygroscopic. The Absorbed Water molecules predominantly reside on the termination groups of the more hydrophilic MXene layers, thereby displacing the ions from the surface and facilitating their motions in the MXene matrix.

Peter A. Dowben – One of the best experts on this subject based on the ideXlab platform.

  • Polyvinylidene fluoride–trifluoroethylene as a reservoir for Absorbed Water
    Materials Letters, 2007
    Co-Authors: Peter Jacobson, Luis G. Rosa, Kristin L. Kraemer, Stephen Ducharme, Peter A. Dowben

    Abstract:

    Abstract The absorption of Water in Langmuir–Blodgett films of ferroelectric copolymers of polyvinylidene fluoride with trifluoroethylene is shown to depend upon the film thickness. This Water absorption can have a profound effect on the dielectric properties of the copolymer films.

  • Water absorption and desorption from the dipole ordered polymer poly(methylvinylidene cyanide)
    The journal of physical chemistry. B, 2006
    Co-Authors: Peter Jacobson, Carolina C. Ilie, I. N. Yakovkin, Matt Poulsen, D. Sahadeva Reddy, James M. Takacs, Peter A. Dowben

    Abstract:

    From thermal desorption studies, we find evidence that Absorbed Water in the bulk of poly(methylvinylidene cyanide) is more weakly bound than is the case for copolymer films of poly(vinylidenefluoride-trifluoroethylene). Ultraviolet laser enhanced thermal desorption of Absorbed Water exhibits little light polarization dependence for poly(methylvinylidene cyanide) in contrast to Absorbed Water in copolymer films of poly(vinylidenefluoride-trifluoroethylene). The implications of these differences are discussed.