Assessment of triboelectricity in colossal-surface-area-lanthanum oxide nanocrystals synthesized via low-temperature hydrothermal process

Abstract

Triboelectric nanogenerators (TENGs) have marked their applications in various elds, most importantly, in medical devices. The electrical output of the TENGs mainly concentrated on parameters such as electrode separation distance, applied mechanical pressure, surface charge density, and overlapping surface-area. The surface-area of the active layer in TENGs plays a crucial role. Given this, the present contribution is the rst report on the utilization of lanthanum oxide (La 2 O 3 ) as an active material with a large surface-area (~72.33 m 2 /g) in TENGs. The nanocrystals of La 2 O 3 have been successfully embedded into TENGs architecture through a high-quality screen-printed lm with a Te on-counter surface. The in-house test-rig of TENGs resulted in an output open-circuit voltage of 120 V and a shortcircuit current of 23.7 μA. Further, the maximum power density is 7.125 W/m 2 at an external load resistance of 30 MΩ. These results suggest that La 2 O 3 is a suitable contender in various self-powered devices.

Techno-Economic Analysis of Lanthanum Oxide Nanoparticles Production using Combustion Solution and Hydrothermal Supercritical Water Condition

“…Because of the high-quality applications of La2O3 nanoparticles in many fields, it was successfully fabricated using various chemical and physical methods. Several studies have reported on the synthesis of La2O3 by various methods, including combustion, coprecipitation, hydrothermal, sol-gel, reflux, sonochemical, solvothermal, spray pyrolysis, and thermal decomposition methods [9][10][11][12][13][14][15][16][17]. The method election for the production of lanthanum nanoparticles is based on advantages.…”