Hydrothermally Synthesized Rare-Earth Oxides as Positive Electrodes for PVA/KOH Gel-Electrolyte Hybrid Supercapacitors
Rare-earth metal oxides are an exciting group of pseudocapacitive materials, but there are limited comparative studies on their electrochemical performance and the further fabrication of gel-electrolyte-based energy-storage devices. In the present study, CeO2, La2O3, Y2O3, Sm2O3, and Pr2O3 were prepared via the hydroth...