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Porous carbon nanosheet with high surface area derived from waste poly(ethylene terephthalate) for supercapacitor applications
Author(s) -
Wen Yanliang,
Kierzek Krzysztof,
Min Jiakang,
Chen Xuecheng,
Gong Jiang,
Niu Ran,
Wen Xin,
Azadmanjiri Jalal,
Mijowska Ewa,
Tang Tao
Publication year - 2020
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.48338
Subject(s) - materials science , supercapacitor , nanosheet , carbonization , chemical engineering , specific surface area , capacitance , carbon fibers , porosity , electrolyte , current density , nanotechnology , electrode , catalysis , composite material , organic chemistry , scanning electron microscope , chemistry , composite number , engineering , physics , quantum mechanics
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 m 2 g −1 ), hierarchically porous architecture, and a large pore volume (3.0 cm 3 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 Na 2 SO 4 ). 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.