Kang, Jin Soo Kim, Seoni Kang, Jiho Joo, Hwajoo Jang, Junghwan Jo, Kyusik Park, Subin Kim, Hyoung-il Yoo, Sung Jong Yoon, Jeyong Sung, Yung-Eun Hatton, T. Alan 2024-01-19T11:04:18Z 2024-01-19T11:04:18Z 2022-09-08 2022-09 0013-936X https://pubs.kist.re.kr/handle/201004/114598 Recent advances in electrochemical desalination techniques have paved way for utilization of saline water. In particular, capacitive deionization (CDI) enables removal of salts with high energy efficiency and economic feasibility, while its applicability has been challenged by degradation of carbon electrodes in long-term operations. Herein, we report a thorough investigation on the surface electrochemistry of carbon electrodes and Faradaic reactions that are responsible for stability issues of CDI systems. By using bare and membrane CDI (MCDI) as model systems, we identified various electrochemical reactions of carbon electrodes with water or oxygen, with thermodynamics and kinetics governed by the electrode potential and pH. As a result, a complete overview of the Faradaic reactions taking place in CDI was constructed by tracing the physicochemical changes occurring in CDI and MCDI systems. English American Chemical Society Surface Electrochemistry of Carbon Electrodes and Faradaic Reactions in Capacitive Deionization Article 10.1021/acs.est.2c03913 1 Environmental Science & Technology, v.56, no.17, pp.12602 - 12612 Environmental Science & Technology 56 17 12602 12612 N scie scopus 000847949800001 Engineering, Environmental Environmental Sciences Engineering Environmental Sciences & Ecology Article WATER DESALINATION XEROGEL ELECTRODES OXYGEN REDUCTION REVERSE-OSMOSIS PERFORMANCE ENERGY PH ELECTROSORPTION SPECTROSCOPY DIFFUSIVITY electrochemistry desalination capacitive deionization carbon Faradaic reaction