Nafion-coated Prussian blue electrodes to enhance the stability and efficiency of battery desalination system
- Authors
- Ahn, Jaewuk; Kim, Seongsoo; Jeon, Sung-il; Lee, Changha; Lee, Jaehan; Yoon, Jeyong
- Issue Date
- 15-Mar-2021
- Publisher
- ELSEVIER
- Keywords
- Capacitive deionization; Faradaic electrodes; Nafion; Prussian blue analogues; Seawater desalination
- Citation
- DESALINATION, v.500
- Journal Title
- DESALINATION
- Volume
- 500
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/15570
- DOI
- 10.1016/j.desal.2020.114778
- ISSN
- 0011-9164
- Abstract
- Battery desalination (BD) is a promising next-generation desalination technology because it is environmentally benign, consumes little energy, and requires only mild operating conditions. However, the BD capacity decreases with long-term operation, which limits its use. Herein, we report a new approach to improve the BD cycling stability by coating battery electrodes with Nafion. Nafion-coated electrodes (NaNiHCF and NaFeHCF) were used with rocking chair desalination, a BD system that pairs two cation-reactive battery electrodes with an anion exchange membrane. The system maintained 94% retention capacity and approximately 100% Coulombic efficiency after 100 cycles. Moreover, the overall desalination performance was enhanced, achieving high desalination capacity (approx. 72 mg g(-1)) and lower specific energy consumption (5.6 kJ mole(-1)). In this study, we describe an effective strategy to improve the overall desalination performance and cycling stability of BD.
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Collections - College of Science and Technology > Department of Biological and Chemical Engineering > 1. Journal Articles
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