In this work, the capacitive deionization (CDI) performance of a single-walled carbon nanotube (CNT) electrode has been studied from the point view of charge efficiency theory. It is revealed here that the charge efficiency of a CNT electrode is strongly dependent upon the cell voltage and solution concentration. Either the high cell voltage or the low ionic strength results in a high charge efficiency, implying that CDI is expected to be a promising technique for an aqueous solution with low ionic strength. Additionally, it is found that the high decay constant and high electrical double-layer capacity are beneficial to enhance electrosorption performance.
The study of capacitive deionization behavior of a carbon nanotube electrode from the perspective of charge efficiency
Haibo Li, Sen Liang, Mangmang Gao, Guolong Li, Jin Li, Lijun He; The study of capacitive deionization behavior of a carbon nanotube electrode from the perspective of charge efficiency. Water Sci Technol 1 January 2015; 71 (1): 83–88. doi: https://doi.org/10.2166/wst.2014.457
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