A novel high performance flexible supercapacitor based on porous carbonized cotton/ZnO nanoparticle/CuS micro-sphere
A novel porous carbonized cotton/ZnO nanoparticles/CuS micro-spheres flexible composite electrode shows excellent electrochemical performances. [Display omitted] In this work, a novel flexible electrode composed of porous carbonized cotton, ZnO nanoparticles and CuS micro-spheres is prepared by two-...
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Published in | Colloids and surfaces. A, Physicochemical and engineering aspects Vol. 584; p. 124025 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
02.01.2020
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Subjects | |
Online Access | Get full text |
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Summary: | A novel porous carbonized cotton/ZnO nanoparticles/CuS micro-spheres flexible composite electrode shows excellent electrochemical performances.
[Display omitted]
In this work, a novel flexible electrode composed of porous carbonized cotton, ZnO nanoparticles and CuS micro-spheres is prepared by two-step method. Benefitting from the synergistic effect of eletrochemical double layer capacitance and pseudo capacitance, the porous carbonized cotton/ ZnO/CuS composite (pCcZC) electrode shows excellent specific capacitance (1830 mF cm−2 at 2 mA cm−2), high rate performance (74% retention with the current density increasing from 2 to 10 mA cm−2) and outstanding cycle stability (14.8% loss of initial capacitance after 5000 cycles). The flexible and lightweight carbonized cotton as current collector directly makes the electrode binder-free, flexible and wearable. Additionally, the flexible symmetrical supercapacitor based on pCcZC electrodes achieves a superior energy density of 0.27 Wh cm−2 at 4.26 W cm−2, and can succesfully light the LED, which manifests its great applied potential in the new generation of portable and wearable energy storage devices. |
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ISSN: | 0927-7757 1873-4359 |
DOI: | 10.1016/j.colsurfa.2019.124025 |