Sealed Mini-H-Type Electrochemical Cell (10mL+10mL) for Fundamental Electrochemistry Research, CFERSMHTEC

An H-type electrochemical cell (or H-cell) is the most ubiquitous reactor in electrochemistry research for applications that require the physical and chemical separation of the anode and cathode chambers. It is named for its distinctive "H" shape, where two vertical glass compartments are connected by a horizontal bridge. This bridge typically contains a membrane or a glass frit that allows ions to move between chambers to complete the circuit while preventing the gaseous or liquid products formed at one electrode from reaching and interfering with the other. The mini volume design is suitable for the condition that the used electrolyte is expensive.  

The H-cell is specifically chosen over a single-chamber cell for several reasons: (1) Product Separation: In CO2 reduction (CO2RR), the oxygen produced at the anode can diffuse to the cathode and be re-reduced, which ruins Faradaic efficiency. The H-cell prevents this "back-reaction". (2) pH Asymmetry: The different pH levels in each chamber can be well maintained (e.g., an acidic anode for oxygen evolution and a neutral cathode for CO2 reduction). (3) Cross-Contamination Prevention: It prevents dissolved metal ions (like Platinum from a counter electrode) from migrating and plating onto the working electrode.