The study of porous alumina structures has attracted the attention of the scientific community because of their interesting features, which can be leverged for energy storage and many other applications of nanotechnology [1-2]. To fabricate porous anodic
alumina, one uses electrochemical etching (anodization) of aluminum in acidic electrolyte. Most anodization procedures that generate straight pores are done at temperatures below 5˚C in sulfuric, oxalic and/or phospheric acids, as reported in the literature [3]. However in this work, we introduce a novel, simple one -pot synthesis method to develop thin walls of aluminum oxide that conatian lithium ions, for Li-ion battery applications. The anodization of Al fil ms was conducted
in a supersaturated mixture of lithium phosphate and 0.75 M phosphoric acid, as a matrix for the Li-composite electrolyte. For this purpose, aluminum films, a few micrometers thick, were fabricated. Our results show that both the anodization rate and current density, in
the transient curve, decreased as the concentration of LiH 2PO4 in H3PO4 increased. Moreover, the wall thickness becomes thinner for samples anodized in higher concentration of LiH2PO4 in H3PO4.

References
[1] L.G. Vivas et al., Nanotech., 24 (10), (2013) 105703.
[2] Hui Wu et al., Macromol. Chem. Phys., 215 (7), (2014) 584.
[3] G.D. Sulka et al., Electrochem. Soc., 151 (5), (2004) B260.