Carbon electrodes modified with water-soluble charged polymer binder for enhanced capacitive deionization performance

被引：0
|
作者：
Wang G. [1 ,2 ]
Che X. [2 ]
Wang S. [1 ]
Qiu J. [2 ]
机构：
[1] School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan
[2] State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Energy Materials and Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian
来源：
Huagong Xuebao/CIESC Journal | 2022年 / 73卷 / 04期
关键词：
Activated carbon; Binder; Capacitive deionization; Surface modification;
D O I：
10.11949/0438-1157.20211793
中图分类号：
学科分类号：
摘要：
Capacitive deionization (CDI) is a new desalination technology based on the principle of electrosorption, which has the advantages of low cost, no secondary pollution, and low energy consumption. The hydrophilic binders carboxymethyl cellulose sodium (CMC), polyvinyl alcohol (PVA) and sulfonated carboxymethyl cellulose sodium (SCMC), quaternized polyvinyl alcohol (QPVA) were used to prepare the activated carbon electrodes, which further enhanced the hydrophilicity and ion selectivity of activated carbon (AC) electrodes. The hydrophilic charged polymer binder can effectively inhibit the anodic oxidation reaction and enhance the driving force of ion adsorption by virtue of its own charge. In 500 mg/L NaCl salt solution at 1.2/0 V, AC-CMC//AC-PVA and AC-SCMC//AC-QPVA can obtain 14.58 and 17.39 mg/g of desalination, respectively, And after 100 cycles at 0.8/0 V, the retention rates of desalination were 65.48% and 80.53%, respectively. © 2022, Editorial Board of CIESC Journal. All right reserved.
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页码：1763 / 1771
页数：8
相关论文
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