A novel high performance configuration of electrochemical cell to produce alkali for sequestration of carbon dioxide
- A novel high performance configuration of electrochemical cell to produce alkali for sequestration of carbon dioxide
- 하흥용; 정광덕; 황진연; 무하마드 이브라힘; 아사드메흐무드; 이주영
- electrochemical cell; NaCl electrolysis; NaOH production; membrane configuration; carbon dioxide mineralization
- Issue Date
- Electrochimica acta
- VOL 219-663
- We propose a new configuration of a 3-compartment electrochemical cell for producing alkali that is subsequently utilized for mineralization of carbon dioxide. In this new membrane configuration, a second cation exchange membrane (CEM) replaces the anion exchange membrane (AEM) employed in a standard cell configuration. The electrochemical cell comprising of two cation exchange membranes (a CEM-CEM system) eliminates the issues associated with the AEM such as low ionic conductivity and inferior mechanical strength. All of tested CEM-CEM combinations exhibit superior electrochemical performance with considerable reduction of energy requirement for NaOH production in comparison to the standard AEM-CEM configuration. The optimized two-CEMs-based system presents a remarkable enhancement of output current density by 2.5-fold and a substantial input energy savings up to 740 kWh ton− 1 for mineralization of carbon dioxide to produce sodium carbonate.
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