The EFFORT project seeks to advance the technologies necessary for the widespread adoption of CO₂ electrolyzers, with a primary goal of developing high-performance devices capable of operating at 2.5 V and 200 mA cm^-2. Central to this effort is the creation of non-fluorinated, highly selective Anion Exchange Membranes (AEMs) tailored to reduce (bi)carbonate crossover. Alongside, innovative gas diffusion electrode (GDE) designs and optimized electrolytes will be employed to mitigate salt precipitation and enhance device efficiency.

Key objectives include developing reinforced thin-film composite membranes with high mechanical strength, low resistance (<0.02 Ωcm²), and thickness under 100 μm. Advanced materials like polysulfone, poly(β-alkanolamine), and selective polymer layers will be integrated, with ultra-thin inorganic coatings added to further improve selectivity and durability.

The project also explores alternative anolyte compositions to prevent carbonate formation and precipitation, leveraging novel cations and additives to stabilize CO₂ -to-carbonate equilibria. Organic anolytes are under investigation for their potential to reduce hydrogen evolution and improve Faradaic efficiency, alongside studies on solvent stability and compatibility with catalysts.

Acknowledging that salt precipitation may still occur, innovative recovery methods such as flushing with water, pulsed flow, and temperature modulation will be tested to dissolve and remove deposits. Additionally, advanced GDE modifications, including femtosecond laser structuring, aim to prevent salt nucleation and deposition, targeting a 30-50% increase in durability compared to current state-of-the-art electrolyzers.

Finally, the most effective membranes, anolytes, and GDEs will be combined into high-performing Membrane Electrode Assemblies (MEAs). These MEAs will undergo rigorous testing, starting with small-scale evaluations and progressing to 200 cm² zero-gap electrolyzers. The ultimate objective is to deliver a CO₂ electrolyzer for syngas production that operates below 2.5 V, integrates AEMs stable in highly alkaline conditions, and incorporates GDEs capable of managing carbonate equilibria and salt deposition during operation, ensuring compatibility with flushing systems for long-term performance.