Probing Li ion dynamics in amorphous xLi                         2                         SO                         4                         ⋅(1 − x)LiPO                         3                          by quasielastic neutron scattering

Tom Heitmann; Gavin Hester; Saibal Mitra; Thomas Calloway; Madhu Sudan Tyagi; Andrew Miskowiec; Souleymane Diallo; Naresh Osti; Eugene Mamontov

doi:10.1016/j.ssi.2019.02.004

Probing Li ion dynamics in amorphous xLi ₂ SO ₄ ⋅(1 − x)LiPO ₃ by quasielastic neutron scattering

Tom Heitmann, Gavin Hester, Saibal Mitra, Thomas Calloway, Madhu Sudan Tyagi, Andrew Miskowiec, Souleymane Diallo, Naresh Osti, Eugene Mamontov

Spectroscopy

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The diffusion dynamics of a series of lithium sulfate substituted phosphate glass materials xLi ₂ SO 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.

Original language	English
Pages (from-to)	95-98
Number of pages	4
Journal	Solid State Ionics
Volume	334
DOIs	https://doi.org/10.1016/j.ssi.2019.02.004
State	Published - Jun 2019

Keywords

Li diffusion
Quasielastic neutron scattering
Solid electrolyte

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ssi.2019.02.004

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Heitmann, T., Hester, G., Mitra, S., Calloway, T., Tyagi, M. S., Miskowiec, A., Diallo, S., Osti, N., & Mamontov, E. (2019). Probing Li ion dynamics in amorphous xLi ₂ SO ₄ ⋅(1 − x)LiPO ₃ by quasielastic neutron scattering Solid State Ionics, 334, 95-98. https://doi.org/10.1016/j.ssi.2019.02.004

Heitmann, Tom ; Hester, Gavin ; Mitra, Saibal et al. / Probing Li ion dynamics in amorphous xLi ₂ SO ₄ ⋅(1 − x)LiPO ₃ by quasielastic neutron scattering In: Solid State Ionics. 2019 ; Vol. 334. pp. 95-98.

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title = " Probing Li ion dynamics in amorphous xLi 2 SO 4 ⋅(1 − x)LiPO 3 by quasielastic neutron scattering ",

abstract = " The diffusion dynamics of a series of lithium sulfate substituted phosphate glass materials xLi 2 SO 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.",

keywords = "Li diffusion, Quasielastic neutron scattering, Solid electrolyte",

author = "Tom Heitmann and Gavin Hester and Saibal Mitra and Thomas Calloway and Tyagi, {Madhu Sudan} and Andrew Miskowiec and Souleymane Diallo and Naresh Osti and Eugene Mamontov",

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year = "2019",

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doi = "10.1016/j.ssi.2019.02.004",

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Heitmann, T, Hester, G, Mitra, S, Calloway, T, Tyagi, MS, Miskowiec, A, Diallo, S, Osti, N & Mamontov, E 2019, ' Probing Li ion dynamics in amorphous xLi ₂ SO ₄ ⋅(1 − x)LiPO ₃ by quasielastic neutron scattering ', Solid State Ionics, vol. 334, pp. 95-98. https://doi.org/10.1016/j.ssi.2019.02.004

Probing Li ion dynamics in amorphous xLi ₂ SO ₄ ⋅(1 − x)LiPO ₃ by quasielastic neutron scattering . / Heitmann, Tom; Hester, Gavin; Mitra, Saibal et al.
In: Solid State Ionics, Vol. 334, 06.2019, p. 95-98.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Probing Li ion dynamics in amorphous xLi 2 SO 4 ⋅(1 − x)LiPO 3 by quasielastic neutron scattering

AU - Heitmann, Tom

AU - Hester, Gavin

AU - Mitra, Saibal

AU - Calloway, Thomas

AU - Tyagi, Madhu Sudan

AU - Miskowiec, Andrew

AU - Diallo, Souleymane

AU - Osti, Naresh

AU - Mamontov, Eugene

PY - 2019/6

Y1 - 2019/6

N2 - The diffusion dynamics of a series of lithium sulfate substituted phosphate glass materials xLi 2 SO 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.

AB - The diffusion dynamics of a series of lithium sulfate substituted phosphate glass materials xLi 2 SO 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.

KW - Li diffusion

KW - Quasielastic neutron scattering

KW - Solid electrolyte

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JO - Solid State Ionics

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ER -

Heitmann T, Hester G, Mitra S, Calloway T, Tyagi MS, Miskowiec A et al. Probing Li ion dynamics in amorphous xLi ₂ SO ₄ ⋅(1 − x)LiPO ₃ by quasielastic neutron scattering Solid State Ionics. 2019 Jun;334:95-98. doi: 10.1016/j.ssi.2019.02.004

Probing Li ion dynamics in amorphous xLi ₂ SO ₄ ⋅(1 − x)LiPO ₃ by quasielastic neutron scattering

Abstract

Keywords

UN SDGs

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Cite this

Probing Li ion dynamics in amorphous xLi 2 SO 4 ⋅(1 − x)LiPO 3 by quasielastic neutron scattering

Abstract

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this

Probing Li ion dynamics in amorphous xLi ₂ SO ₄ ⋅(1 − x)LiPO ₃ by quasielastic neutron scattering