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Conduction below 100 °C in nominal Li6ZnNb4O14
- Source :
- Journal of Materials Science. 51:854-860
- Publication Year :
- 2015
- Publisher :
- Springer Science and Business Media LLC, 2015.
-
Abstract
- The increasing demand for a safe rechargeable battery with a high energy density per cell is driving a search for a novel solid electrolyte with a high Li+ or Na+ conductivity that is chemically stable in a working Li-ion or Na-ion battery. Li6ZnNb4O14 (LZNO) has been reported to exhibit a σ Li > 10−2 S cm−1 at 250 °C, but to disproportionate into multiple phases on cooling from 850 °C to room-temperature. An investigation of the room-temperature Li-ion conductivity in a porous pellet of a multiphase product of a nominal LZNO composition is shown to have bulk σ Li ≈ 3.3 × 10−5 S cm−1 at room-temperature that increases to 1.4 × 10−4 S cm−1 by 50 °C. 7Li MAS NMR spectra were fitted to two Lorentzian lines, one of which showed a dramatic increase with increasing temperature. A test for water stability indicates that Li+ may move to the particle and grain surfaces to react with adsorbed water as occurs in the garnet Li+ conductors.
- Subjects :
- Battery (electricity)
Materials science
Mechanical Engineering
Analytical chemistry
02 engineering and technology
Electrolyte
Conductivity
010402 general chemistry
021001 nanoscience & nanotechnology
Thermal conduction
01 natural sciences
Spectral line
0104 chemical sciences
Adsorption
Mechanics of Materials
Particle
General Materials Science
0210 nano-technology
Porosity
Subjects
Details
- ISSN :
- 15734803 and 00222461
- Volume :
- 51
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Science
- Accession number :
- edsair.doi...........f3e26a0d9a6bdf8335d83de830999cc1