Amorphous glass-perovskite composite as solid electrolyte for lithium-ion battery
By Salami, Taiye J.; Imanieh, Sam H.; Lawrence, Joseph G.; Martin, I. R.
Published in Materials Letters
2019
Abstract
Of most solid materials available as potential solid electrolytes for lithium-ion batteries, the crystalline perovskite type lithium lanthanum titanate (Li0.5La0.5TiO3 or LLTO) has been shown to possess one of the highest room temperature bulk ionic conductivity. However, grain boundary contributions lower this value by two orders of magnitude. Herein, we present a composite of silica-based glass and perovskite which results in an amorphous composite having denser microstructure and better stability than the LLTO itself. Also, this composite possessed no grain boundary contributions and has an increased ionic conductivity than crystalline perovskite. An alternate fabrication route further improved the conductivity of the composite electrolyte.
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