Carbon capture and utilization technology has been recognized as one of the most promising technologies for mitigating climate change. The practical application of this technology is still challenging because of its low technological maturity expensive production cost, and high energy consumption. The main challenge of this technology is that a large amount of thermal energy must be provided to supply high-purity CO2 and purify the product.  Experimental investigations show high CO2 absorption rates (>84%) of triethylamine from low CO2 concentrated flue gas. This system provides a fundamental solution for the CO2 crossover and low system stability of electrochemical CO2 reduction.