This thesis is part of a larger project focused on developing a printed monolithic device that integrates a dye-sensitized solar cell (DSSC) with a supercapacitor (SC) to enable efficient energy production and storage. Such devices are promising for a sustainable future in the Internet of Things (IoT), offering viable alternatives to conventional disposable batteries. One of the objective of the project is to characterize printable inks used to create carbon-based electrodes composed of activated carbon and carbon black. These materials provide high surface area and good conductivity, making them suitable for use as storage electrodes in supercapacitors and as catalytic (counter) electrodes in DSSCs.