Tuning mobility and stability of lithium ion conductors based on lattice dynamics
Abstract
Lithium ion conductivity in many structural families can be tuned by many orders of magnitude, with some rivaling that of liquid electrolytes at room temperature. Unfortunately, fast lithium conductors exhibit poor stability against lithium battery electrodes. In this article, we report a fundamentally new approach to alter ion mobility and stability against oxidation of lithium ion conductors using lattice dynamics. By combining inelastic neutron scattering measurements with density functional theory, fast lithium conductors were shown to have low lithium vibration frequency or low center of lithium phonon density of states. On the other hand, lowering anion phonon densities of states reduces the stability against electrochemical oxidation. Olivines with low lithium band centers but high anion band centers are promising lithium ion conductors with high ion conductivity and stability. Such findings highlight new strategies in controlling lattice dynamics to discover new lithium ion conductors with enhanced conductivity and stability.
- Authors:
-
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, USA
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, USA, Dipartimento di Scienza dei Materiali
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, USA
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, USA
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, USA, Mechanical Engineering and Materials Science
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Midori, Japan
- Research Battery Technology, BMW Group, Munich 80788, Germany
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, USA, Department of Mechanical Engineering
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States); Duke Univ., Durham, NC (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- OSTI Identifier:
- 1493940
- Alternate Identifier(s):
- OSTI ID: 1543789
- Grant/Contract Number:
- SC0016166; AC02-05CH11231
- Resource Type:
- Published Article
- Journal Name:
- Energy & Environmental Science
- Additional Journal Information:
- Journal Name: Energy & Environmental Science Journal Volume: 11 Journal Issue: 4; Journal ID: ISSN 1754-5692
- Publisher:
- Royal Society of Chemistry (RSC)
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; Chemistry; Energy & Fuels; Engineering; Environmental Sciences & Ecology
Citation Formats
Muy, Sokseiha, Bachman, John C., Giordano, Livia, Chang, Hao-Hsun, Abernathy, Douglas L., Bansal, Dipanshu, Delaire, Olivier, Hori, Satoshi, Kanno, Ryoji, Maglia, Filippo, Lupart, Saskia, Lamp, Peter, and Shao-Horn, Yang. Tuning mobility and stability of lithium ion conductors based on lattice dynamics. United Kingdom: N. p., 2018.
Web. doi:10.1039/C7EE03364H.
Muy, Sokseiha, Bachman, John C., Giordano, Livia, Chang, Hao-Hsun, Abernathy, Douglas L., Bansal, Dipanshu, Delaire, Olivier, Hori, Satoshi, Kanno, Ryoji, Maglia, Filippo, Lupart, Saskia, Lamp, Peter, & Shao-Horn, Yang. Tuning mobility and stability of lithium ion conductors based on lattice dynamics. United Kingdom. https://doi.org/10.1039/C7EE03364H
Muy, Sokseiha, Bachman, John C., Giordano, Livia, Chang, Hao-Hsun, Abernathy, Douglas L., Bansal, Dipanshu, Delaire, Olivier, Hori, Satoshi, Kanno, Ryoji, Maglia, Filippo, Lupart, Saskia, Lamp, Peter, and Shao-Horn, Yang. Wed .
"Tuning mobility and stability of lithium ion conductors based on lattice dynamics". United Kingdom. https://doi.org/10.1039/C7EE03364H.
@article{osti_1493940,
title = {Tuning mobility and stability of lithium ion conductors based on lattice dynamics},
author = {Muy, Sokseiha and Bachman, John C. and Giordano, Livia and Chang, Hao-Hsun and Abernathy, Douglas L. and Bansal, Dipanshu and Delaire, Olivier and Hori, Satoshi and Kanno, Ryoji and Maglia, Filippo and Lupart, Saskia and Lamp, Peter and Shao-Horn, Yang},
abstractNote = {Lithium ion conductivity in many structural families can be tuned by many orders of magnitude, with some rivaling that of liquid electrolytes at room temperature. Unfortunately, fast lithium conductors exhibit poor stability against lithium battery electrodes. In this article, we report a fundamentally new approach to alter ion mobility and stability against oxidation of lithium ion conductors using lattice dynamics. By combining inelastic neutron scattering measurements with density functional theory, fast lithium conductors were shown to have low lithium vibration frequency or low center of lithium phonon density of states. On the other hand, lowering anion phonon densities of states reduces the stability against electrochemical oxidation. Olivines with low lithium band centers but high anion band centers are promising lithium ion conductors with high ion conductivity and stability. Such findings highlight new strategies in controlling lattice dynamics to discover new lithium ion conductors with enhanced conductivity and stability.},
doi = {10.1039/C7EE03364H},
journal = {Energy & Environmental Science},
number = 4,
volume = 11,
place = {United Kingdom},
year = {Wed Apr 18 00:00:00 EDT 2018},
month = {Wed Apr 18 00:00:00 EDT 2018}
}
https://doi.org/10.1039/C7EE03364H
Web of Science
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