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Tremella-like NiO microspheres embedded with fish-scale-like polypyrrole for high-performance asymmetric supercapacitor

Tremella-like NiO microspheres embedded with fish-scale-like polypyrrole (PPy) were synthesized by polymerizing pyrrole (Py) onto uniform NiO nanosheets. PPy has a fish-scale-like appearance with a thickness of approximately 10 nm, and is connected to the NiO nanosheet surface. NiO/PPy microspheres...

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Detalles Bibliográficos
Autores principales: Han, Kehui, Liu, Yan, Huang, Hui, Gong, Qinghua, Zhang, Zhiliang, Zhou, Guowei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9066417/
https://www.ncbi.nlm.nih.gov/pubmed/35518896
http://dx.doi.org/10.1039/c9ra03046h
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author Han, Kehui
Liu, Yan
Huang, Hui
Gong, Qinghua
Zhang, Zhiliang
Zhou, Guowei
author_facet Han, Kehui
Liu, Yan
Huang, Hui
Gong, Qinghua
Zhang, Zhiliang
Zhou, Guowei
author_sort Han, Kehui
collection PubMed
description Tremella-like NiO microspheres embedded with fish-scale-like polypyrrole (PPy) were synthesized by polymerizing pyrrole (Py) onto uniform NiO nanosheets. PPy has a fish-scale-like appearance with a thickness of approximately 10 nm, and is connected to the NiO nanosheet surface. NiO/PPy microspheres (diameter of ∼4 μm) were applied as the electrode material in a supercapacitor. The NiO/PPy-6 obtained under a NiO : Py molar ratio of 6 shows a high specific capacitance of 3648.6 F g(−1) at 3 A g(−1) and good rate capability (1783 F g(−1) at a high current density of 30 A g(−1)). An asymmetric supercapacitor (ASC) was fabricated using NiO/PPy-6 and activated carbon (AC) as the positive electrode and the negative electrode, respectively. NiO/PPy-6//AC can achieve a high specific capacitance of 937.5 F g(−1) at 3 A g(−1) and a high energy density of 333.3 W h kg(−1) at a power density of 2399.99 W kg(−1). The excellent supercapacitor performance is assigned to the combined contribution of both components and the unique heterostructure in NiO/PPy-6.
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spelling pubmed-90664172022-05-04 Tremella-like NiO microspheres embedded with fish-scale-like polypyrrole for high-performance asymmetric supercapacitor Han, Kehui Liu, Yan Huang, Hui Gong, Qinghua Zhang, Zhiliang Zhou, Guowei RSC Adv Chemistry Tremella-like NiO microspheres embedded with fish-scale-like polypyrrole (PPy) were synthesized by polymerizing pyrrole (Py) onto uniform NiO nanosheets. PPy has a fish-scale-like appearance with a thickness of approximately 10 nm, and is connected to the NiO nanosheet surface. NiO/PPy microspheres (diameter of ∼4 μm) were applied as the electrode material in a supercapacitor. The NiO/PPy-6 obtained under a NiO : Py molar ratio of 6 shows a high specific capacitance of 3648.6 F g(−1) at 3 A g(−1) and good rate capability (1783 F g(−1) at a high current density of 30 A g(−1)). An asymmetric supercapacitor (ASC) was fabricated using NiO/PPy-6 and activated carbon (AC) as the positive electrode and the negative electrode, respectively. NiO/PPy-6//AC can achieve a high specific capacitance of 937.5 F g(−1) at 3 A g(−1) and a high energy density of 333.3 W h kg(−1) at a power density of 2399.99 W kg(−1). The excellent supercapacitor performance is assigned to the combined contribution of both components and the unique heterostructure in NiO/PPy-6. The Royal Society of Chemistry 2019-07-12 /pmc/articles/PMC9066417/ /pubmed/35518896 http://dx.doi.org/10.1039/c9ra03046h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Han, Kehui
Liu, Yan
Huang, Hui
Gong, Qinghua
Zhang, Zhiliang
Zhou, Guowei
Tremella-like NiO microspheres embedded with fish-scale-like polypyrrole for high-performance asymmetric supercapacitor
title Tremella-like NiO microspheres embedded with fish-scale-like polypyrrole for high-performance asymmetric supercapacitor
title_full Tremella-like NiO microspheres embedded with fish-scale-like polypyrrole for high-performance asymmetric supercapacitor
title_fullStr Tremella-like NiO microspheres embedded with fish-scale-like polypyrrole for high-performance asymmetric supercapacitor
title_full_unstemmed Tremella-like NiO microspheres embedded with fish-scale-like polypyrrole for high-performance asymmetric supercapacitor
title_short Tremella-like NiO microspheres embedded with fish-scale-like polypyrrole for high-performance asymmetric supercapacitor
title_sort tremella-like nio microspheres embedded with fish-scale-like polypyrrole for high-performance asymmetric supercapacitor
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9066417/
https://www.ncbi.nlm.nih.gov/pubmed/35518896
http://dx.doi.org/10.1039/c9ra03046h
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