期刊
JOURNAL OF ENERGY STORAGE
卷 28, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.est.2020.101283
关键词
Polymeric organic framework; Symmetric supercapacitor; Solvothermal method; Specific capacitance; Power density
资金
- National Research Foundation of Korea [21A20131612324] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this paper, we report a novel pore enriched carbon derived from polymeric organic framework (POF) of phloroglucinol and terephthaldehyde by solvothermal method followed by pyrolysis under an inert atmosphere at 800 degrees C (POF-800) for symmetric supercapacitor (SSC) applications. The as-prepared POF and POF-800 were characterized by the following techniques. To identify the functional groups, Fourier transform infrared spectroscopy (FT-IR) was used. The surface morphology was analyzed through scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Thermal stability and the oxidation state of the element was studied by thermogravimetric analysis (TGA) and x-ray photoelectron spectroscopy (XPS), respectively. POF-800 electrode shows a maximum surface area of 352 m(2) g(-1). In a three-electrode system, POF-800 electrode showed 50.1 F g(-1) of specific capacitance at 0.25 A g(-1) current density. Also, the SSC electrode exhibited specific capacitance of 46.3 F g(-1) at 0.5 A g(-1) with exceptional long term stability (5000 cycles) and moderate energy density of 14.48 Wh kg(-1) in 6 M KOH electrolyte. The present finding opens a new avenue for well-developed porous carbon materials to encourage advanced supercapacitor device for superior electrochemical energy storage.
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