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- W3201287029 endingPage "46548" @default.
- W3201287029 startingPage "46537" @default.
- W3201287029 abstract "In capacitive deionization (CDI), coion repulsion and Faradaic reactions during charging reduce the charge efficiency (CE), thus limiting the salt adsorption capacity (SAC) and energy efficiency. To overcome these issues, membrane CDI (MCDI) based on the enhanced permselectivity of the anode and cathode is proposed using the ion-exchange polymer as the independent membrane or coating. To develop a novel and cost-effective MCDI system, we fabricated an integrated membrane electrode using a thin layer of the inorganic ion-exchange material coated on the activated carbon (AC) electrode, which effectively improves the ion selectivity. Montmorillonite (MT, Al2O9Si3) and hydrotalcite (HT, Mg6Al2(CO3)(OH)16·4H2O) were selected as the main active anion- and cation-exchange materials, respectively, for the cathode and anode. The HT–MT MCDI system employing HT–AC and MT–AC electrodes obtained a CE of 90.5% and an SAC of 15.8 mg g–1 after 100 consecutive cycles (50 h); these values were considerably higher than those of the traditional CDI system employing pristine AC electrodes (initially, a CE of 55% and an SAC of 10.2 mg g–1, which attenuated continuously to zero, and even “inverted work” occurs after 50 h, i.e., desorption during charging and adsorption during discharging). The HT–MT MCDI system showed moderate tolerance to organic matters during desalination and retained 84% SAC and 89% CE after 70 cycles in 50–200 mg L–1 sodium alginate. This study demonstrates a simple and cost-effective method for fabricating high-CE electrodes for desalination with great application potential." @default.
- W3201287029 created "2021-09-27" @default.
- W3201287029 creator A5005997787 @default.
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- W3201287029 creator A5069407062 @default.
- W3201287029 creator A5077343682 @default.
- W3201287029 creator A5087494012 @default.
- W3201287029 date "2021-09-23" @default.
- W3201287029 modified "2023-10-14" @default.
- W3201287029 title "Novel Inorganic Integrated Membrane Electrodes for Membrane Capacitive Deionization" @default.
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- W3201287029 doi "https://doi.org/10.1021/acsami.1c10119" @default.
- W3201287029 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34554723" @default.
- W3201287029 hasPublicationYear "2021" @default.
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