气候变化领域集成服务门户(CCPortal): Tuning mobility and stability of lithium ion conductors based on lattice dynamics

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DOI	10.1039/c7ee03364h
	Tuning mobility and stability of lithium ion conductors based on lattice dynamics
	Muy S.; Bachman J.C.; Giordano L.; Chang H.-H.; Abernathy D.L.; Bansal D.; Delaire O.; Hori S.; Kanno R.; Maglia F.; Lupart S.; Lamp P.; Shao-Horn Y.
发表日期	2018
ISSN	17545692
起始页码	850
结束页码	859
卷号	11 期号:4
英文摘要	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. © 2018 The Royal Society of Chemistry.
英文关键词	Density functional theory; Dynamics; Electrochemical oxidation; Ions; Lattice vibrations; Neutron scattering; Phonons; Silicate minerals; Stability; Enhanced conductivity; Liquid electrolytes; Lithium battery electrodes; Lithium ion conductors; Lithium-ion conductivity; Orders of magnitude; Phonon density of state; Vibration frequency; Lithium-ion batteries; electrical conductivity; electrode; lattice dynamics; lithium; mobility; neutron scattering; oxidation; vibration
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190265
作者单位	Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Dipartimento di Scienza Dei Materiali, Università di Milano-Bicocca, Milano, 20125, Italy; Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States; Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, United States; Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Interdisciplinary Graduate, School of Science and Engineering, Tokyo Institute of Technology, Nagatsuta, Midori Yokohama, 4259, 226-8502, Japan; Research Battery Technology, BMW Group, Munich, 80788, Germany
推荐引用方式 GB/T 7714	Muy S.,Bachman J.C.,Giordano L.,et al. Tuning mobility and stability of lithium ion conductors based on lattice dynamics[J],2018,11(4).
APA	Muy S..,Bachman J.C..,Giordano L..,Chang H.-H..,Abernathy D.L..,...&Shao-Horn Y..(2018).Tuning mobility and stability of lithium ion conductors based on lattice dynamics.Energy & Environmental Science,11(4).
MLA	Muy S.,et al."Tuning mobility and stability of lithium ion conductors based on lattice dynamics".Energy & Environmental Science 11.4(2018).