Add time:07/28/2019 Source:sciencedirect.com
Inorganic lithium solid-state electrolytes with advantage of safety are considered as the candidates to substitute the organic liquid electrolytes in lithium ion batteries. Sintering of these solid electrolytes always requires high-temperature and long time. In this paper, spark plasma sintering was employed to prepare lithium LANTHANUM TITANIUM OXIDE (cas 12031-47-9) solid-state electrolyte. X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy and electrochemical impedance spectroscopy were preformed to characterize their microstructure and ionic conductivity. The results showed that fine-grained electrolytes with high relative density of about 98.5% were obtained by sintering the oxide ceramics at 1050 °C for only 3 min. The ionic conductivity increases as the ceramic density increases. Grain boundaries in oxide ceramics dominate the Li+ transport.
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