The rapid expansion for high performance material has driven interest in developing nano-structured composite material with new properties and functionalities. Herein, two distinctive nano-structured material were studied. The first was a PVOH composite 3D printed with MXene ink. The component was used as a strain sensor capable of detecting strain up to 250 %, it was also used as capacitor with an energy density of 36.4 mJ/cm³. The second was a polyurethane aerogel with high porosity of 94 vol %. Using polyol with four diols as crosslinking agent allowed for multiple crosslinking points, creating flexible and robust aerogel suitable for energy harvesting. Key fabrication parameters and their effect on final product were investigated to conclude on an optimized processing technique. A piece of aerogel film was then used as contact material inside a tribo-electric-nano-generator setup, the nano-porous structure of the film increased power output by 2.5 times to achieve specific density of 1.12 W/m².