Seawater alkalization via an energy-efficient electrochemical process for CO₂ capture.

ABSTRACT: Electrochemical pH-swing strategies offer a promising avenue for cost-effective and energy-efficient carbon dioxide (CO₂) capture, surpassing the traditional thermally activated processes and humidity-sensitive techniques. The concept of elevating seawater's alkalinity for scalable CO₂ capture without introducing additional chemical as reactant is particularly intriguing due to its minimal environmental impact. However, current commercial plants like chlor-alkali process or water electrolysis demand high thermodynamic voltages of 2.2 V and 1.23 V, respectively, for the production of sodium hydroxide (NaOH) from seawater. These high voltages are attributed to the asymmetric electrochemical reactions, where two completely different reactions take place at the anode and

SUBMITTER: Guan X 

PROVIDER: S-EPMC11551434 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature