| Affiliation: | 1. Nanomaterials Physicochemistry Department, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastów Avenue 42, 71-065 Szczecin, Poland
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 China;2. Department of Polymer and Carbonaceous Materials, Faculty of Chemistry, Wroclaw University of Science and Technology, Gdanska 7/9, 50-344 Wroclaw, Poland;3. Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, 117576 Singapore, Singapore;4. Nanomaterials Physicochemistry Department, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Piastów Avenue 42, 71-065 Szczecin, Poland;5. Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 430074 Wuhan, China;6. Department of Physics, Cornell University, Ithaca, New York, 14853;7. Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, Victoria, 3122 Australia;8. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 China |
| Abstract: | Converting waste plastics into valuable carbon materials has obtained increasing attention. In addition, carbon materials have shown to be the ideal electrode materials for double-layer supercapacitors owing to their large specific surface area, high electrical conductivity, and stable physicochemical properties. Herein, an easily operated approach is established to efficiently convert waste poly(ethylene terephthalate) beverage bottles into porous carbon nanosheet (PCNS) through the combined processes of catalytic carbonization and KOH activation. PCNS features an ultrahigh specific surface area (2236 m2 g?1), hierarchically porous architecture, and a large pore volume (3.0 cm3 g?1). Such excellent physicochemical properties conjointly contribute to the outstanding supercapacitive performance: 169 F g?1 (6 M KOH) and 135 F g?1 (1 M Na2SO4). Furthermore, PCNS shows a high capacitance of 121 F g?1 and a corresponding energy density of 30.6 Wh kg?1 at 0.2 A g?1 in the electrolyte of 1 M TEATFB/PC. When the current density increases to 10 A g?1, the capacitance remains at 95 F g?1, indicating the extraordinary rate capability. This work not only proposes a facile approach to synthesize PCNS for supercapacitors, but also puts forward a potential sustainable way to recycle waste plastics and further hopefully mitigates the waste plastics-related environmental issues. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137, 48338. |
