Journey of electrochemical chlorine production: From brine to seawater

Chloralkali process plays a predominant and irreplaceable role in the chemical industry because chlorine is used in various industrial processes. Herein, we first present the fundamental catalytic mechanisms and electrode evolution history of chlorine evolution reaction. Then, the advantages and challenges of chlorine production from seawater/seawater-like solution electrocatalysis are discussed. Lastly, future opportunities are highlighted under the frame of materials design, theoretical understanding, advanced characterization techniques, and industrial applications. We hope that this perspective can draw more attention to designing novel and efficient Chloralkali systems that can use seawater/seawater-like solutions to produce chlorine.

Automated summary

The chloralkali process is essential in the chemical industry due to the widespread use of chlorine. This article discusses the catalytic mechanisms and history of chlorine evolution reaction, as well as the challenges and advantages of producing chlorine from seawater/seawater-like solutions. Additionally, future opportunities in materials design, theoretical understanding, advanced characterization techniques, and industrial applications are highlighted. The objective is to draw attention to the development of novel and efficient chloralkali systems that can utilize seawater/seawater-like solutions for chlorine production.