From plastic to supercapacitor electrode materials: Preparation and properties of cobalt oxide/carbon composites with polyethylene terephthalate as carbon source. Issue 5 (1st March 2023)

• Record Type: Journal Article
• Authors: Gao, Wenhai; Zhao, Yican; Chen, Wenqi; Zhuang, Jiale; Shang, Mingyi; Sun, Dongya; Xie, An
• Is Part Of: Ceramics international. Volume 49:Issue 5(2023)
• Page Start: 7266
• Page End: 7273
• Publication Date: 2023-03-01
• Subjects: Cobalt oxide (Co3O4) -- Polyethylene terephthalate (PET) waste -- Solvothermal synthesis -- Supercapacitor; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.10.180
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Polyethylene terephthalate (PET), the traditional material for polyester food packaging, is difficult to degrade. Taking PET-like plastics as carbon source, this study fabricates cobalt oxide (Co3 O4 )/carbon composites with flake structure through carbonization and solvothermal synthesis, which can serve as a useful supercapacitor electrode. Then, the electrochemical properties of samples were investigated under different heating time of solvothermal synthesis. Experiments show that the heating time of solvothermal synthesis had a certain impact on the electrical capacity and charging/discharging performance of the composites. Among the samples, SL-8 stands out with an electrical capacity of 110.8 F g −1, the retention reached 88.82% after 2000 cycles. This composite offers a promising electrode material for supercapacitors, and sheds new lights on solving white pollution.