Low-temperature fabrication of lithium aluminum oxide phosphate solid electrolyte thin films from aqueous precursors

Abstract

The synthetic method presented herein provides a simple, inexpensive and environmentally benign deposition route for the fabrication of inorganic solid electrolyte thin films at low temperatures.

Structural elucidation of NASICON (Na3Al2P3O12) based glass electrolyte materials: effective influence of boron and gallium

“…These results support the fact that lower mobile ion conductivity was achieved from NCAP glass that from any other types of NASICON glasses. 68 …”

“…In addition, the formation of a high concentration of AlO 5 /AlO 6 units, which generally compensates the charge of the Q 0 (mAl) units instead of the Na + cation, when compared to that of NCAP glasses also increases the distance between the hopping centres for Na + ion mobility. 68 The previous results suggest that decreasing the Q 0 (3Al) units and increasing the charge compensation centres in the network structure might increase the conductivity of the NCAP glass. Therefore, further experimental studies are required to enhance the ionic conductivity at RT for the NCAP glass to be useful for Na-ion batteries.…”

Solution-Processed Li2O–Al2O3/TiO2 Nanolaminate Stacks Containing Mobile Lithium Ions and with Increased Breakdown Voltages

“…Furthermore, obvious signs of cracking are absent in LiAlO thin films despite rapid dehydration and counter ion elimination. As previously reported, this suggests the formation of the solid-state thin films from aqueous solutions is a relatively forgiving transition generating low levels of film stress. ,,, …”

“…The thickness of the LiAlO films was observed to be readily controlled via the concentration of the precursor solution used for spin-coating, as observed in other PIC syntheses. , The film thickness was observed to linearly depend on the precursor concentration with films fabricated over the range of 13–58 nm (Figure S6). The major limitation of producing thick films via spin-coating is the solubility of the inorganic salt precursor in the solvent (water).…”

“…PIC has been previously established as an effective method for thin-film deposition of quality metal oxides, − including ionic conductors, as well as nanolaminate structures. , It has been previously used to synthesize TiO 2 but not LiAlO. Relative to other thin-film synthesis/deposition methods that have been used to fabricate nanolaminates, such as ALD and magnetron sputtering, PIC does not require expensive vacuum deposition equipment.…”