Journal
JOURNAL OF POWER SOURCES
Volume 209, Issue -, Pages 184-188Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2012.02.099
Keywords
Li-ion battery; Solid electrolyte; Garnet; Li7-xLa3H f(2-x)Ta(x)O(12); Li NMR; Ionic conductivity
Funding
- Robert A Welch Foundation of Houston, Texas [F-1066, F-1436]
- Department of Energy Office of Basic Energy Science [DE SC00005397]
- US Department of Energy, Basic Energy Sciences, Materials Science and Engineering Division
- LDRD [LOIS 5608]
- US Department of Energy
- ORISE
- Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, US Department of Energy
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The nominal Li concentration giving a maximum room temperature Li-ion conductivity sigma(1.i) similar or equal to 3.45 x 10(-4) Scm(-1) with an E-a similar or equal to 0.438 eV in the system Li7-xLa3Hf2-xTaxO12 fired in an alumina crucible at 1130 degrees C for 48h occurs in the narrow range of x = 0.45 +/- 0.05. The samples were prepared by solid-state reaction and characterized by XRD, SEM, electrochemical impedance spectroscopy and Li-7 MAS NMR measurements. Published by Elsevier B.V.
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