Stability improvement of the advanced electrochemical CO2 capture process with high-capacity polyamine solvents

Yuanhao Mao, Sayd Sultan, Huifeng Fan, Yunsong Yu, Xiaomei Wu and Zaoxiao Zhang

Applied Energy, 2024, vol. 369, issue C, No S0306261924009802

Abstract: The electrochemically mediated amine regeneration (EMAR) technology is regarded as a promising electrochemical carbon capture method which has the potential to be cost-effective, environmentally friendly and energy efficient. Extensive research has been conducted on the EMAR process, ranging from the mechanism to technical and economic evaluations. However, the practical application of this technology still encounters certain challenges, including limited absorbent options, unclear reaction mechanism, poor copper cycling performance and equipment corrosion hazards. To solve these problems, ethylenediamine (EDA), diethylenetriamine (DETA), and triethylenetetramine (TETA) are selected as potential absorbents for the EMAR process in this work. The different Cu-polyamine systems receive comprehensive investigations including electrochemical characterization, analysis of cathodic nucleation mechanism, corrosion assessment, and absorption/desorption performance evaluation. We experimentally reveal the electrodeposition mechanism of copper ion and predict the quality of copper deposited layers in different polyamine solutions. In addition, the results show that the adsorption of copper-amine ionic complexes on the surface of carbon steel in the EMAR system will enhance the corrosion resistance. Based on the Cu-DETA system, we achieved a low energy consumption of 36.67 kJe/mol CO2 at a current density of 0.01 A/cm2, which is very competitive with the state-of-the-art EMAR systems.

Keywords: Electrochemical CO2 capture; Polyamine solution; Electrochemical behaviour; Corrosion analysis; Copper electrodeposition; Desorption energy consumption (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261924009802
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:369:y:2024:i:c:s0306261924009802

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2024.123597

Access Statistics for this article

Applied Energy is currently edited by J. Yan

More articles in Applied Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().