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Resolving the Grain Boundary and Lattice Impedance of Hot‐Pressed Li 7 La 3 Zr 2 O 12 Garnet Electrolytes
Author(s) -
Tenhaeff Wyatt E.,
Rangasamy Ezhiyl,
Wang Yangyang,
Sokolov Alexei P.,
Wolfenstine Jeff,
Sakamoto Jeffrey,
Dudney Nancy J.
Publication year - 2014
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201300022
Subject(s) - grain boundary , materials science , electrolyte , fast ion conductor , dielectric spectroscopy , analytical chemistry (journal) , electrical impedance , grain size , lattice (music) , thermal conduction , mineralogy , solid solution , condensed matter physics , chemistry , metallurgy , microstructure , composite material , electrode , physics , electrochemistry , chromatography , quantum mechanics , acoustics
Rock solid: The cubic‐stabilized garnet solid electrolyte with a nominal composition of Li 6.28 Al 0.24 La 3 Zr 2 O 12 is thoroughly characterized by impedance spectroscopy. By varying the frequency of the applied AC signal over 11 orders of magnitude for characterizations from −100 to +60 °C, the relative contributions of grain and grain boundary conduction are unambiguously resolved.