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A Review of Battery Materials as CDI Electrodes for Desalination

Department of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, China
Chinese National Engineering Center for Control and Treatment of Heavy Metals Pollution, Changsha 410083, China
Water Pollution Control Technology Key Lab of Hunan Province, Changsha 410083, China
Author to whom correspondence should be addressed.
Water 2020, 12(11), 3030;
Received: 15 September 2020 / Revised: 16 October 2020 / Accepted: 19 October 2020 / Published: 28 October 2020
(This article belongs to the Section Wastewater Treatment and Reuse)
The world is suffering from chronic water shortage due to the increasing population, water pollution and industrialization. Desalinating saline water offers a rational choice to produce fresh water thus resolving the crisis. Among various kinds of desalination technologies, capacitive deionization (CDI) is of significant potential owing to the facile process, low energy consumption, mild working conditions, easy regeneration, low cost and the absence of secondary pollution. The electrode material is an essential component for desalination performance. The most used electrode material is carbon-based material, which suffers from low desalination capacity (under 15 mg·g−1). However, the desalination of saline water with the CDI method is usually the charging process of a battery or supercapacitor. The electrochemical capacity of battery electrode material is relatively high because of the larger scale of charge transfer due to the redox reaction, thus leading to a larger desalination capacity in the CDI system. A variety of battery materials have been developed due to the urgent demand for energy storage, which increases the choices of CDI electrode materials largely. Sodium-ion battery materials, lithium-ion battery materials, chloride-ion battery materials, conducting polymers, radical polymers, and flow battery electrode materials have appeared in the literature of CDI research, many of which enhanced the deionization performances of CDI, revealing a bright future of integrating battery materials with CDI technology. View Full-Text
Keywords: battery materials; CDI electrodes and desalination battery materials; CDI electrodes and desalination
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MDPI and ACS Style

Jiang, Y.; Alhassan, S.I.; Wei, D.; Wang, H. A Review of Battery Materials as CDI Electrodes for Desalination. Water 2020, 12, 3030.

AMA Style

Jiang Y, Alhassan SI, Wei D, Wang H. A Review of Battery Materials as CDI Electrodes for Desalination. Water. 2020; 12(11):3030.

Chicago/Turabian Style

Jiang, Yuxin; Alhassan, Sikpaam I.; Wei, Dun; Wang, Haiying. 2020. "A Review of Battery Materials as CDI Electrodes for Desalination" Water 12, no. 11: 3030.

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