| Abstract [eng] |
The growing deployment of renewable energy sources is driving demand for large-scale stationary energy-storage systems, among which vanadium redox flow batteries (VRFB) stand out for their modular design, long cycle life, and low cross-contamination. Graphite felt is one of the most used electrode materials in VRFBs owning to its three-dimensional porous structure and good electrical conductivity. However, its electrochemical activity towards vanadium species is limited by poor wettability and an insufficient number of active sites. The present work investigates the possibility of enhancing the electrochemical activity of graphite felt through modification with electrochemically deposited manganese(IV) oxide from KMnO4 solutions of different concentrations The engineering part covers the design of production line for modified graphite felt electrodes, including equipment sizing calculations, building design solutions, a financial-economical assessment, and an environmental evaluation. A separate chapter addresses occupational safety, health, and fire-safety requirements. |
