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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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
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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. |
format | Online Article Text |
id | pubmed-9066417 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
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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