Chloride ion storage performance of polyaniline/graphene nanocomposite in aqueous sodium chloride solution. (June 2021)

• Record Type: Journal Article
• Authors: Zhu, Tiantian; Kong, Hui; Xia, Tianchen; Shen, Yuyin; Miao, Yingchun; Zhao, Xiangyu
• Is Part Of: Materials research bulletin. Volume 138(2021)
• Publication Date: 2021-06
• Subjects: Polyaniline -- Desalination -- Electrochemistry -- Energy recovery -- Batteries; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2021.111209
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: The polyaniline/graphene material is first employed as the faradaic electrode in the desalination system. The as-prepared polyaniline-based electrode delivers a high reversible capacity of 126 mA h g −1 . Competitive chloride ion storage performance of the polyaniline electrode is achieved. Abstract: The use of anion storage materials has played an important role in the development of electrochemical energy storage systems and water desalination. Herein, the graphene-supported polyaniline (PANI/GN) nanomaterial is developed as a new chloride ion storage electrode in aqueous sodium chloride solution. The as-prepared PANI/GN electrode exhibits highly reversible electrochemical stability in both a three-electrode system and a full desalination battery using a sodium ion storage electrode. Competitive electrochemical properties with a reversible capacity of 126 mA h g −1, a coulombic efficiency of more than 95 % and a high rate capability are achieved for the PANI/GN electrode compared to the previously reported electrodes of metals, antimony oxychloride, and polypyrrole. The anionic chloride species instead of covalent chloride species in the as-prepared PANI/GN is demonstrated to be electrochemically active.