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    Rights statement: This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry C, copyright ©2018 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.jpcc.8b01507

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Lithium Conductivity and Ions Dynamics in LiBH4/SiO2 Solid Electrolytes Studied by Solid-State NMR and Quasi-Elastic Neutron Scattering and Applied in Lithium Sulfur Batteries

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Lithium Conductivity and Ions Dynamics in LiBH4/SiO2 Solid Electrolytes Studied by Solid-State NMR and Quasi-Elastic Neutron Scattering and Applied in Lithium Sulfur Batteries. / Lefevr, Jessica; Cervini, Luca; Griffin, John M. et al.
In: The Journal of Physical Chemistry C, Vol. 122, No. 27, 12.07.2018, p. 15264-15275.

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Lefevr J, Cervini L, Griffin JM, Blanchard D. Lithium Conductivity and Ions Dynamics in LiBH4/SiO2 Solid Electrolytes Studied by Solid-State NMR and Quasi-Elastic Neutron Scattering and Applied in Lithium Sulfur Batteries. The Journal of Physical Chemistry C. 2018 Jul 12;122(27):15264-15275. Epub 2018 Jun 13. doi: 10.1021/acs.jpcc.8b01507

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@article{2dc9ea84fba64a9cbf823380763f9ab0,
title = "Lithium Conductivity and Ions Dynamics in LiBH4/SiO2 Solid Electrolytes Studied by Solid-State NMR and Quasi-Elastic Neutron Scattering and Applied in Lithium Sulfur Batteries",
abstract = "Composite solid-state electrolytes based on ball milled LiBH4/SiO2 aerogel exhibit high lithium conductivities, and we have found an optimal weight ratio of 30/70 wt % LiBH4/SiO2 with a conductivity of 0.1 mS cm(-1) at room temperature. We have studied the Li+ and BH4 dynamics using quasi-elastic neutron scattering and solid-state nuclear magnetic resonance and found that only a small fraction (similar to 10%) of the ions have high mobilities, whereas most of the LiBH4 shows behavior similar to macrocrystal line material. The modified LiBH4 is formed from interaction with the SiO2 surface and most probably from reaction with the surface silanol groups. We successfully applied these composite electrolytes in lithium-sulfur solid-state batteries. The batteries show reasonable capacity retention (794 mAh g(-1) sulfur after 10 discharge-charge cycles, Coulombic efficiency of 88.8 +/- 2.7%, and average capacity loss of 7.2% during the first 10 cycles).",
keywords = "GLASS-CERAMIC ELECTROLYTES, NUCLEAR-MAGNETIC-RESONANCE, FIXED-WINDOW SCANS, TETRAHYDROBORATE ANIONS, NANOCONFINED LIBH4, ROTATIONAL MOTION, HYDROGEN DYNAMICS, DFT CALCULATIONS, PHASE, LI",
author = "Jessica Lefevr and Luca Cervini and Griffin, {John M.} and Didier Blanchard",
note = "This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry C, copyright {\textcopyright}2018 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.jpcc.8b01507",
year = "2018",
month = jul,
day = "12",
doi = "10.1021/acs.jpcc.8b01507",
language = "English",
volume = "122",
pages = "15264--15275",
journal = "The Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "27",

}

RIS

TY - JOUR

T1 - Lithium Conductivity and Ions Dynamics in LiBH4/SiO2 Solid Electrolytes Studied by Solid-State NMR and Quasi-Elastic Neutron Scattering and Applied in Lithium Sulfur Batteries

AU - Lefevr, Jessica

AU - Cervini, Luca

AU - Griffin, John M.

AU - Blanchard, Didier

N1 - This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry C, copyright ©2018 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.jpcc.8b01507

PY - 2018/7/12

Y1 - 2018/7/12

N2 - Composite solid-state electrolytes based on ball milled LiBH4/SiO2 aerogel exhibit high lithium conductivities, and we have found an optimal weight ratio of 30/70 wt % LiBH4/SiO2 with a conductivity of 0.1 mS cm(-1) at room temperature. We have studied the Li+ and BH4 dynamics using quasi-elastic neutron scattering and solid-state nuclear magnetic resonance and found that only a small fraction (similar to 10%) of the ions have high mobilities, whereas most of the LiBH4 shows behavior similar to macrocrystal line material. The modified LiBH4 is formed from interaction with the SiO2 surface and most probably from reaction with the surface silanol groups. We successfully applied these composite electrolytes in lithium-sulfur solid-state batteries. The batteries show reasonable capacity retention (794 mAh g(-1) sulfur after 10 discharge-charge cycles, Coulombic efficiency of 88.8 +/- 2.7%, and average capacity loss of 7.2% during the first 10 cycles).

AB - Composite solid-state electrolytes based on ball milled LiBH4/SiO2 aerogel exhibit high lithium conductivities, and we have found an optimal weight ratio of 30/70 wt % LiBH4/SiO2 with a conductivity of 0.1 mS cm(-1) at room temperature. We have studied the Li+ and BH4 dynamics using quasi-elastic neutron scattering and solid-state nuclear magnetic resonance and found that only a small fraction (similar to 10%) of the ions have high mobilities, whereas most of the LiBH4 shows behavior similar to macrocrystal line material. The modified LiBH4 is formed from interaction with the SiO2 surface and most probably from reaction with the surface silanol groups. We successfully applied these composite electrolytes in lithium-sulfur solid-state batteries. The batteries show reasonable capacity retention (794 mAh g(-1) sulfur after 10 discharge-charge cycles, Coulombic efficiency of 88.8 +/- 2.7%, and average capacity loss of 7.2% during the first 10 cycles).

KW - GLASS-CERAMIC ELECTROLYTES

KW - NUCLEAR-MAGNETIC-RESONANCE

KW - FIXED-WINDOW SCANS

KW - TETRAHYDROBORATE ANIONS

KW - NANOCONFINED LIBH4

KW - ROTATIONAL MOTION

KW - HYDROGEN DYNAMICS

KW - DFT CALCULATIONS

KW - PHASE

KW - LI

U2 - 10.1021/acs.jpcc.8b01507

DO - 10.1021/acs.jpcc.8b01507

M3 - Journal article

VL - 122

SP - 15264

EP - 15275

JO - The Journal of Physical Chemistry C

JF - The Journal of Physical Chemistry C

SN - 1932-7447

IS - 27

ER -