Exploration of Energy Storage Materials for Water Desalination via Next-Generation Capacitive Deionization.

Wenhui Shi,Haibo Li,Fangfang Wu,Jiangnan Shen,Zhiyuan Zeng,Xiehong Cao,Jing Mao,Xinlong Gao,Xin Qian,Wenxian Liu

doi:10.3389/fchem.2020.00415

Abstract

Clean energy and environmental protection are critical to the sustainable development of human society. The numerous emerged electrode materials for energy storage devices offer opportunities for the development of capacitive deionization (CDI), which is considered as a promising water treatment technology with advantages of low cost, high energy efficiency, and wide application. Conventional CDI based on porous carbon electrode has low salt removal capacity which limits its application in high salinity brine. Recently, the faradaic electrode materials inspired by the researches of sodium-batteries appear to be attractive candidates for next-generation CDI which capture ions by the intercalation or redox reactions in the bulk of electrode. In this mini review, we summarize the recent advances in the development of various faradaic materials as CDI electrodes with the discussion of possible strategies to address the problems present.

Highlights

Clean energy and environmental protection are critical to the sustainable development of human society (Panwar et al, 2011; Shahzad et al, 2017; Liu et al, 2019a)
The capacitive deionization (CDI) research community is expected to grow larger with the development of novel electrode materials and cell architectures
More efforts can be made in future to the investigation of electrode materials capable of capturing multivalent ions

Summary

Introduction

Clean energy and environmental protection are critical to the sustainable development of human society (Panwar et al, 2011; Shahzad et al, 2017; Liu et al, 2019a). CDI is an emerging water treatment technology which shares many similarities with electrochemical energy storage systems.

Results

Conclusion