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Title: Li{sub 2}MTi{sub 6}O{sub 14} (M= Sr, Ba) new anodes for lithium ion batteries.

Abstract

Isostructural Li{sub 2}MTi{sub 6}O{sub 14} (M=Sr, Ba) materials, prepared by a solid state reaction method, have been investigated as insertion electrodes for lithium battery applications. These titanate compounds have a structure that consists of a three-dimensional network of corner- and edge-shared [TiO{sub 6}] octahedra, 11-coordinate polyhedra for the alkali-earth ions, and [LiO{sub 4}] tetrahedra in tunnels that also contain vacant tetrahedral and octahedral sites. Electrochemical data show that these compounds are capable of reversibly intercalating four lithium atoms in a three-stage process between 1.4 and 0.5 V vs. metallic lithium. The electrodes provide a practical capacity of approximately 140 mAh/g; they are, therefore, possible alternative anode materials to the lithium titanate spinel, Li{sub 4}Ti{sub 5}O{sub 12}. The lithium intercalation mechanism and crystal structure of Li{sub 2}MTi{sub 6}O{sub 14} (M=Sr, Ba) electrodes are discussed and compared with the electrochemical and structural properties of Li{sub 4}Ti{sub 5}O{sub 12}. The area-specific impedance (ASI) of Li/Li{sub 2}SrTi{sub 6}O{sub 14} cells was found to be significantly lower than that of Li/Li{sub 4}Ti{sub 5}O{sub 12} cells.

Authors:
;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
EE
OSTI Identifier:
961295
Report Number(s):
ANL/CMT/JA-46290
Journal ID: ISSN 1388-2481; TRN: US201011%%568
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Electrochem. Commun.
Additional Journal Information:
Journal Volume: 5; Journal Issue: 6 ; Jun. 2003; Journal ID: ISSN 1388-2481
Country of Publication:
United States
Language:
ENGLISH
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE; ADIABATIC SURFACE IONIZATION; ANODES; ATOMS; CAPACITY; CRYSTAL STRUCTURE; DATA; ELECTRIC BATTERIES; ELECTRODES; IMPEDANCE; IONS; LITHIUM; LITHIUM IONS; LITHIUM TITANATES; MATERIALS; SOLIDS; TITANATES; TUNNEL EFFECT

Citation Formats

Belharouak, I, Amine, K, and Chemical Engineering. Li{sub 2}MTi{sub 6}O{sub 14} (M= Sr, Ba) new anodes for lithium ion batteries.. United States: N. p., 2003. Web. doi:10.1016/S1388-2481(03)00090-0.
Belharouak, I, Amine, K, & Chemical Engineering. Li{sub 2}MTi{sub 6}O{sub 14} (M= Sr, Ba) new anodes for lithium ion batteries.. United States. doi:10.1016/S1388-2481(03)00090-0.
Belharouak, I, Amine, K, and Chemical Engineering. Sun . "Li{sub 2}MTi{sub 6}O{sub 14} (M= Sr, Ba) new anodes for lithium ion batteries.". United States. doi:10.1016/S1388-2481(03)00090-0.
@article{osti_961295,
title = {Li{sub 2}MTi{sub 6}O{sub 14} (M= Sr, Ba) new anodes for lithium ion batteries.},
author = {Belharouak, I and Amine, K and Chemical Engineering},
abstractNote = {Isostructural Li{sub 2}MTi{sub 6}O{sub 14} (M=Sr, Ba) materials, prepared by a solid state reaction method, have been investigated as insertion electrodes for lithium battery applications. These titanate compounds have a structure that consists of a three-dimensional network of corner- and edge-shared [TiO{sub 6}] octahedra, 11-coordinate polyhedra for the alkali-earth ions, and [LiO{sub 4}] tetrahedra in tunnels that also contain vacant tetrahedral and octahedral sites. Electrochemical data show that these compounds are capable of reversibly intercalating four lithium atoms in a three-stage process between 1.4 and 0.5 V vs. metallic lithium. The electrodes provide a practical capacity of approximately 140 mAh/g; they are, therefore, possible alternative anode materials to the lithium titanate spinel, Li{sub 4}Ti{sub 5}O{sub 12}. The lithium intercalation mechanism and crystal structure of Li{sub 2}MTi{sub 6}O{sub 14} (M=Sr, Ba) electrodes are discussed and compared with the electrochemical and structural properties of Li{sub 4}Ti{sub 5}O{sub 12}. The area-specific impedance (ASI) of Li/Li{sub 2}SrTi{sub 6}O{sub 14} cells was found to be significantly lower than that of Li/Li{sub 4}Ti{sub 5}O{sub 12} cells.},
doi = {10.1016/S1388-2481(03)00090-0},
journal = {Electrochem. Commun.},
issn = {1388-2481},
number = 6 ; Jun. 2003,
volume = 5,
place = {United States},
year = {2003},
month = {6}
}