Synthesis and Electrochemical Properties of Electrospun Cerium Oxide (CeO) Nanoparticles/Carbon Nanofibers
Journal of Electronic Materials, ISSN: 1543-186X, Vol: 51, Issue: 6, Page: 2933-2948
2022
- 12Citations
- 13Captures
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Article Description
This work reports on a high-performance supercapacitor of cerium oxide/carbon nanofiber (CeO/CNF) nanocomposites prepared by the combination of electrospinning and thermal treatment techniques. The superior capacitive performance of the CeO/CNF nanocomposites could be attributed to the presence of Ce/Ce and the highly porous structure determined by x-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller. The CeO/CNF nanocomposites with various CeO:CNF ratios (CeO = 10 wt%, 20 wt%, and 40 wt%) exhibited a highly porous structure with average pore size and specific surface area of 3.28 nm and 754 mg, respectively. By using the XPS technique, the presence of Ce and Ce in all the CeO/CNFs samples has been confirmed. The CeO/CNF electrodes exhibit a pseudocapacitive behavior with the specific capacitance ranging from 103.47 Fg to 211.84 Fg at a current density of 1 Ag. Among our samples, the CeO/CNF 20 wt% exhibits the highest specific capacitance of 232.86 Fg (equivalent to an energy density of 37.97 Whkg) and a very high-power density (136.88 Wkg × 10 Wkg) with the capacitive retention of >97% after 1000 charge/discharge cycles. This work suggests that the CeO/CNF nanocomposites could be a promising candidate to be used as the electroactive material for supercapacitor applications. Graphical abstract: [Figure not available: see fulltext.]
Bibliographic Details
Springer Science and Business Media LLC
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