发布时间：2025-10-28

文章标题：本组毛元豪博士生一作论文有关电化学介导胺捕集二氧化碳的泡沫铜电极设计研究，最新发表在Separation and Purification Technology期刊上

内容：

Mitigating cathode blocking in the advanced electrochemically mediated amine regeneration CO₂ capture system by asymmetric copper foam electrode design

 

Yuanhao Mao，Huifeng Fan, Yang Yang, Jiayi Liu, Yunsong Yu, Zaoxiao Zhang*, Xiaomei Wu**

 

Electrochemically mediated amine regeneration (EMAR) technology is a promising CO2 capture method because of the theoretically high capture efficiency and low operating temperature. However, challenges still remain in high energy consumption and poor electrode cycling stability. This work innovatively proposed an asymmetric Cu-Foam electrode based EMAR CO2 capture system to mitigate cathode blocking effects and improve energy efficiency. Electrochemical tests demonstrate the Cu-Foam electrode can accelerate reaction kinetics, enhance diffusion and lower resistances, achieving a 42.1 % reduction in CO2 desorption energy consumption compared to that of traditional Cu-Plate electrode. Key optimizations were implemented, including adjustments to electrode spacing, applied current, and the introduction of a novel asymmetric electrode configuration. Results show that narrower electrode spacing and higher current can efficiently enhance the cathodic performance, while the novel asymmetric electrode configuration, specifically enlarging the cathode area, effectively mitigates cathode blocking and reduces the energy consumption. Cycling stability of the proposed system was verified through polarity-switching tests, showing stable desorption performance and electrode structure after 10 cycles. At a current density of 60 A/m2, the proposed system achieved a desorption energy consumption of 28.05–33.84 kJe/mol CO2, which outperforms most existing electrochemical capture technologies. Results indicate that the proposed asymmetric Cu-Foam electrode configuration can effectively alleviate the cathode blocking effect and reduce the energy consumption of the EMAR CO2 capture system, contributing to the practical application of advanced electrochemical carbon capture technologies.

 

Separation and Purification Technology, Volume 382, Part 2, 26 February 2026, 135825

 

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中文摘要

不对称泡沫铜电极设计缓解新型电化学碳捕集系统中的阴极阻塞

电化学介导胺再生（EMAR）技术是一种有前景的CO₂捕集方法，因为它在理论上具有高捕集效率和低操作温度特性。然而，其应用推广仍然面临高能耗和电极循环稳定性差的挑战。本研究创新性地提出了一种不对称铜泡沫电极配置的EMAR- CO₂捕集系统，以减轻阴极阻塞效应并提高能效。电化学测试表明，铜泡沫电极可以加速反应动力学、增强扩散并降低电阻，与传统铜板电极相比，CO₂解吸能耗减少了42.1%。对关键参数实施优化，包括调整电极间距、施加电流以及引入新型不对称电极配置。结果显示，较窄的电极间距和较高的电流能够有效提升阴极性能，而新型不对称电极配置，特别是增大阴极面积，能够有效减轻阴极阻塞并降低能耗。通过极性切换测试验证了所提系统的循环稳定性，显示在10个循环后解吸性能和电极结构依然稳定。在60 A/m²的电流密度下，该系统实现了28.05–33.84 kJ/mol CO₂的解吸能耗，优于大多数现有的电化学捕集技术。结果表明，所提的不对称铜泡沫电极配置能够有效缓解阴极阻塞效应并降低EMAR二氧化碳捕集系统的能耗，有利于先进电化学碳捕集技术的实际应用。