Polymer-coated composite anodes for efficient and stable capacitive deionization

被引：67

作者：

Gao, X. ^{[1
]}

Omosebi, A. ^{[1
]}

Holubowitch, N. ^{[1
]}

Liu, A. ^{[1
,2
]}

Ruh, K. ^{[1
,3
]}

Landon, J. ^{[1
]}

Liu, K. ^{[1
,4
]}

机构：

[1] Univ Kentucky, Ctr Appl Energy Res, Lexington, KY 40511 USA

[2] Paul Laurence Dunbar High Sch, Lexington, KY 40513 USA

[3] Univ Kentucky, Dept Chem & Mat Engn, Lexington, KY 40506 USA

[4] Univ Kentucky, Dept Mech Engn, Lexington, KY 40506 USA

来源：

DESALINATION | 2016年 / 399卷

基金：

美国国家科学基金会;

关键词：

Capacitive deionization; Performance degradation; Carbon oxidation; Effluent pH; Polymer-coated carbon; CARBON XEROGEL ELECTRODES; DE-IONIZATION PROCESSES; LONG-TERM STABILITY; WATER DESALINATION; ZERO CHARGE; PERFORMANCE; DEPENDENCE; OXYGEN;

D O I：

10.1016/j.desal.2016.08.006

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In the contemporary literature, diminished salt removal in a CDI device is primarily due to carbon oxidation at the anode in aqueous solutions. Therefore, an anion exchange polymer is used to prepare a composite carbon as a CDI anode. Results from repetitive CDI testing shows that more efficient and consistent long-term salt removal is achieved when a flow-through CDI stack is configured with composite anodes compared to polymer-free anodes. Analysis of the effluent pH and steady-state current indicates that this performance improvement may be due to the minimization of parasitic reactions by shielding of the carbon electrodes with the selective polymer layer coated at the anode. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：16 / 20

页数：5

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