Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 159, Issue 8, Pages A1148-A1151Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.009208jes
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Funding
- Department of Energy Office of Basic Energy Science [DE-SC0005397]
- U.S. Department of Energy, Basic Energy Sciences, Materials Science and Engineering Division
- LDRD Program of ORNL [LOIS 5608]
- ORISE postdoctoral fellowship
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In order to investigate the influence of covalent bonding within the garnet framework on the conductivity of Li+ in the interstitial space, the Li+ conductivities in the family of Sn-based compounds Li6La3SnMO12 (M = Sb, Nb, Ta) have been obtained and are compared with those of Li6La3ZrMO12. Refinement of the neutron diffraction pattern of Li6La3SnNbO12 shows that the interstitial tetrahedral sites (24d) are about half-occupied and most of the Li in the interstitial bridging octahedral sites are displaced from the center position (48g). The Sb-based compound has the largest lattice parameter while the Ta-based compound has the highest Li+-ion conductivity of 0.42x10(-4) S cm(-1). (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.009208jes] All rights reserved.
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