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Title: Probing Li ion dynamics in amorphous xLi 2SO 4∙(1-x)LiPO 3 by quasielastic neutron scattering

Abstract

The diffusion dynamics of a series of lithium sulfate substituted phosphate glass materials xLi 2SO 4∙(1-x)LiPO 3 has been probed by quasielastic neutron scattering. Amorphous Li ion conductors are attractive as electrolyte materials for all-solid state batteries because they are highly isotropic and chemically stable. Local disorder is expected to reduce barriers to ion migration – leading to improved ionic conductivity relative to their crystalline counterpart – while minimizing unwanted electron transport. We report Li self-diffusion in these materials on a length scale comparable to the interatomic spacings, obtaining values D ≃ 55 ± 4 × 10 -8 cm 2/s at 450 K. Elastic neutron scattering measurements show an alteration of the phosphate chain backbone of the glass material.

Authors:
 [1];  [2];  [2];  [2];  [3]; ORCiD logo [4];  [4]; ORCiD logo [4]; ORCiD logo [4]
  1. University of Missouri, Columbia, MO (United States)
  2. Missouri State University, Springfield, MO (United States)
  3. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1495936
Alternate Identifier(s):
OSTI ID: 1502534
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Solid State Ionics
Additional Journal Information:
Journal Volume: 334; Journal Issue: C; Journal ID: ISSN 0167-2738
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Li diffusion; Quasielastic neutron scattering; Solid electrolyte

Citation Formats

Heitmann, Tom, Hester, Gavin, Mitra, Saibal, Calloway, Thomas, Tyagi, Madhu Sudan, Miskowiec, Andrew J., Diallo, Souleymane, Osti, Naresh C., and Mamontov, Eugene. Probing Li ion dynamics in amorphous xLi2SO4∙(1-x)LiPO3 by quasielastic neutron scattering. United States: N. p., 2019. Web. doi:10.1016/j.ssi.2019.02.004.
Heitmann, Tom, Hester, Gavin, Mitra, Saibal, Calloway, Thomas, Tyagi, Madhu Sudan, Miskowiec, Andrew J., Diallo, Souleymane, Osti, Naresh C., & Mamontov, Eugene. Probing Li ion dynamics in amorphous xLi2SO4∙(1-x)LiPO3 by quasielastic neutron scattering. United States. doi:10.1016/j.ssi.2019.02.004.
Heitmann, Tom, Hester, Gavin, Mitra, Saibal, Calloway, Thomas, Tyagi, Madhu Sudan, Miskowiec, Andrew J., Diallo, Souleymane, Osti, Naresh C., and Mamontov, Eugene. Sat . "Probing Li ion dynamics in amorphous xLi2SO4∙(1-x)LiPO3 by quasielastic neutron scattering". United States. doi:10.1016/j.ssi.2019.02.004.
@article{osti_1495936,
title = {Probing Li ion dynamics in amorphous xLi2SO4∙(1-x)LiPO3 by quasielastic neutron scattering},
author = {Heitmann, Tom and Hester, Gavin and Mitra, Saibal and Calloway, Thomas and Tyagi, Madhu Sudan and Miskowiec, Andrew J. and Diallo, Souleymane and Osti, Naresh C. and Mamontov, Eugene},
abstractNote = {The diffusion dynamics of a series of lithium sulfate substituted phosphate glass materials xLi2SO4∙(1-x)LiPO3 has been probed by quasielastic neutron scattering. Amorphous Li ion conductors are attractive as electrolyte materials for all-solid state batteries because they are highly isotropic and chemically stable. Local disorder is expected to reduce barriers to ion migration – leading to improved ionic conductivity relative to their crystalline counterpart – while minimizing unwanted electron transport. We report Li self-diffusion in these materials on a length scale comparable to the interatomic spacings, obtaining values D ≃ 55 ± 4 × 10-8 cm2/s at 450 K. Elastic neutron scattering measurements show an alteration of the phosphate chain backbone of the glass material.},
doi = {10.1016/j.ssi.2019.02.004},
journal = {Solid State Ionics},
number = C,
volume = 334,
place = {United States},
year = {2019},
month = {2}
}

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This content will become publicly available on February 16, 2020
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