CO<sub>2</sub>液相吸收-电催化转化一体化研究进展

doi:10.11896/cldb.24110196

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Abstract Carbon capture and utilization (CCU) technology is an important way to achieve carbon neutrality. In the traditional CCU process, CO₂ needs to go through many steps such as absorption, desorption, compression, and transportation to obtain high-purity gas, followed by electrochemical CO₂ reduction reaction (eCO₂RR), resulting in high technical energy consumption and cost investment. Direct electrochemical conversion via the captured-CO₂ reduction reaction (cCO₂RR) is a cutting-edge technology that can avoid high energy consumption steps such as regeneration and compression transportation, thereby achieving cost reduction. This article systematically reviews the research progress of cCO₂RR. We have sorted out the effects and mechanisms of electrode materials, absorbent components, additives, etc. on the cCO₂RR in organic amine solution and alkaline solution systems, and summarized the research status of cCO₂RR. The electrode material mainly includes components such as Au, Ag, Cu, etc. Increasing the surface area of the electrode material by changing its morphology is the main means to improve the electrocatalytic performance. The research on absorption solutions mainly focuses on the types of absorption solutions and additives, among which alkaline solutions are mainly NaHCO₃ and KHCO₃, while organic amine solutions are mainly single organic amines such as primary/se-condary/tertiary amines. By adding metal cations and cationic surfactants, the conductivity of the solution can be improved and the hydrogen evolution side reaction can be suppressed, respectively, which both can enhance the selectivity of the product. Future research should focus on the modification methods of catalytic materials, regulating the selectivity of products, and conducting research on organic amine phase transition absorption systems.

Key words： CO₂ capture and utilization electrocatalytic reduction organic amine CO₂ emission reduction

Published: 25 November 2025 Online: 2025-11-14

CLC number:

X505

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	Articles by authors
	WANG Shaona
	YANG Yang
	XU Wenqing
	BAI Dingrong
	SU Fabing
	ZHU Tingyu

Cite this article:

WANG Shaona,YANG Yang,XU Wenqing, et al. Research Progress of Integrated CO₂ Liquid-phase Absorption Electrocatalytic Conversion[J]. Materials Reports, 2025, 39(22): 24110196-8.

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https://www.mater-rep.com/EN/10.11896/cldb.24110196 OR https://www.mater-rep.com/EN/Y2025/V39/I22/24110196

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