资源化利用二氧化碳有了新“膜”法

Core Insights - The research team at Nankai University has made significant advancements in the field of acidic membrane electrode electrocatalytic carbon dioxide reduction by innovatively using porous membranes instead of traditional ion exchange membranes, achieving high selectivity and long-term stability in CO2 conversion [1][2] Group 1: Research Findings - The new porous membrane system demonstrated a Faradaic efficiency of 85% for carbon monoxide at a current density of 400 mA/cm², significantly higher than the less than 20% efficiency of ion exchange membrane systems [2] - In a continuous operation test lasting 200 hours, the system maintained a nearly 100% proportion of carbon monoxide in the CO2 reduction products, with minimal by-products and no salt precipitation [2] - The technology showed good scalability and industrial application potential, as it remained stable for over 120 hours in a 100 cm² large-scale electrolyzer, with approximately 90% carbon monoxide proportion [2] Group 2: Implications for Industry - The results provide a new membrane usage and design strategy for acidic membrane electrode CO2 reduction electrolyzers, laying the groundwork for the future synthesis of high-value carbon-based fuels and chemicals [2] - The research team aims to further optimize electrode interface design and actively promote the industrialization of CO2 electrolysis technology [2]