Kamyar Parsi




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The urge of tackling the issues of the exceeding energy demand, and the consistent CO2 emissions as a simultaneous phenomenon, puts the concept of utilizing the fuel cells in a spotlight. The scarcity and the cost of the noble metals such as Platinum (Pt) or Palladium (Pd) is a significant limiting parameter in implementing them in large scale industrial applications. On the other hand, the carbon dioxide reduction using the aqueous-fed systems constrains the conversion to low current densities due to the inadequate mass-transport diffusion pathway, keeping in mind that for commercial scale utilization, reaching high current densities (~200 mA/cm^2) is essential. As a result, Half-cell gas diffusion electrode (GDE) setups are considered to be highly promising for carbon dioxide reduction reaction (CO2RR). Further concerns exist to be tackled as well, such as flooding, resulting in a switch in selectivity towards hydrogen evolution reaction (HER), taking place during the reduction process.

The focus of my thesis will be to implement a GDE setup in order to investigate the Silver (Ag) catalyst towards the electrochemical CO2 reduction; in addition of combining the scanning flow cell (SFC) with on-line inductive coupled plasma mass spectrometer (ICP-MS) to the system to check for the silver dissolution during the process.