In the MSCA funded grant, the researcher, Dr. Kalyan Ghosh, developed 3D-printed supercapacitors that open the way for fabricating energy storage with any complex shape without the requirement of a conventional industrial process line. Such a table-top fabrication process of energy storage will be less expensive that can store energy from renewable sources and power up electronic devices. Further, he has shown the fabrication of large-scale electrochemically active flexible film for energy conversion through the generation of hydrogen, which shows the path of economical hydrogen production. As hydrogen is predicted to be the fuel for the future, the large-scale fabrication of electro(photo)catalytically active graphite/2D materials based composite film with near-infrared photoresponse and pseudocapacitive properties, is an economically feasible avenue for energy harvesting, outer space application, and wearable devices. Besides, the researcher developed triboelectric nanogenerator to produce green hydrogen that demonstrates another route for harvesting green energy. So far, the use of triboelectric nanogenerators was limited mostly to self-powered electronics, sensors, and the internet of things (IoTs). Likewise, scientists and industries focused on generating green hydrogen from solar panels or wind turbines. However, this project shows that green hydrogen can be produced anywhere, anytime, and free using triboelectric nanogenerators.