The invention: Nanostructure device and method for manufacturing nanostructures – A method for manufacturing a plurality of nanostructures on a substrate. The method comprises the steps of: depositing a bottom layer on an upper surface of the substrate, the bottom layer comprising grains having a first average grain size; depositing a catalyst layer on an upper surface of the bottom layer, the catalyst layer comprising grains having a second average grain size different from the first average grain size, thereby forming a stack of layers comprising the bottom layer and the catalyst layer; heating the stack of layers to a temperature where nanostructures can form; and providing a gas comprising a reactant such that the reactant comes into contact with the catalyst layer.
Carbon nanofibers in hydrogen electrolysis & fuel cells Hydrogen has emerged as a key to store renewable energy and making heavy industry carbon-free. Two application areas of immediate vital importance. The core technologies that make this possible are hydrogen electrolysis and fuel cells. Electrolysis converts electricity into hydrogen, while fuel cells convert the hydrogen back to electricity.