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Design and fabrication of polypyrrole/expanded graphite 3D interlayer nanohybrids towards high capacitive performance
Polypyrrole/expanded graphite (PPy/EG) nanohybrids, with a hierarchical structure of a three dimensional EG framework with a thick PPy coating layer, have been synthesized via a vacuum-assisted intercalation in situ oxidation polymerization method. In the synthesis, pyrrole monomers were intercalate...
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/PMC9067312/ https://www.ncbi.nlm.nih.gov/pubmed/35514504 http://dx.doi.org/10.1039/c9ra04205a |
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author | Wang, Jue Fu, Dong Ren, Binqiao Yu, Ping Zhang, Xiaochen Zhang, Weijun Kan, Kan |
author_facet | Wang, Jue Fu, Dong Ren, Binqiao Yu, Ping Zhang, Xiaochen Zhang, Weijun Kan, Kan |
author_sort | Wang, Jue |
collection | PubMed |
description | Polypyrrole/expanded graphite (PPy/EG) nanohybrids, with a hierarchical structure of a three dimensional EG framework with a thick PPy coating layer, have been synthesized via a vacuum-assisted intercalation in situ oxidation polymerization method. In the synthesis, pyrrole monomers were intercalated into the irregular pores of EG with the assistance of a vacuum pump. Subsequently, the intercalated pyrrole monomers assembled on both sides of the EG nanosheets and formed PPy by an in situ polymerization method. As electrode materials, the typical PPy/EG10 sample with an EG content of 10% had a high specific capacitance of 454.3 F g(−1) and 442.7 F g(−1) (1.0 A g(−1)), and specific capacitance retention rate of 75.9% and 73.3% (15.0 A g(−1)) in 1 M H(2)SO(4) and 1 M KCl electrolytes, respectively. The two-electrode symmetric supercapacitor showed a high energy density of 47.5 W h kg(−1) at a power density of 1 kW kg(−1), and could retain superb stability after 2000 cycles. The unique self-supporting structure feature and homogeneous PPy nanosphere coating combined the contributions of electrochemical double layer capacitance and pseudo-capacitance, which made the nanohybrids an excellent electrode material for high performance energy storage devices. |
format | Online Article Text |
id | pubmed-9067312 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90673122022-05-04 Design and fabrication of polypyrrole/expanded graphite 3D interlayer nanohybrids towards high capacitive performance Wang, Jue Fu, Dong Ren, Binqiao Yu, Ping Zhang, Xiaochen Zhang, Weijun Kan, Kan RSC Adv Chemistry Polypyrrole/expanded graphite (PPy/EG) nanohybrids, with a hierarchical structure of a three dimensional EG framework with a thick PPy coating layer, have been synthesized via a vacuum-assisted intercalation in situ oxidation polymerization method. In the synthesis, pyrrole monomers were intercalated into the irregular pores of EG with the assistance of a vacuum pump. Subsequently, the intercalated pyrrole monomers assembled on both sides of the EG nanosheets and formed PPy by an in situ polymerization method. As electrode materials, the typical PPy/EG10 sample with an EG content of 10% had a high specific capacitance of 454.3 F g(−1) and 442.7 F g(−1) (1.0 A g(−1)), and specific capacitance retention rate of 75.9% and 73.3% (15.0 A g(−1)) in 1 M H(2)SO(4) and 1 M KCl electrolytes, respectively. The two-electrode symmetric supercapacitor showed a high energy density of 47.5 W h kg(−1) at a power density of 1 kW kg(−1), and could retain superb stability after 2000 cycles. The unique self-supporting structure feature and homogeneous PPy nanosphere coating combined the contributions of electrochemical double layer capacitance and pseudo-capacitance, which made the nanohybrids an excellent electrode material for high performance energy storage devices. The Royal Society of Chemistry 2019-07-26 /pmc/articles/PMC9067312/ /pubmed/35514504 http://dx.doi.org/10.1039/c9ra04205a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Wang, Jue Fu, Dong Ren, Binqiao Yu, Ping Zhang, Xiaochen Zhang, Weijun Kan, Kan Design and fabrication of polypyrrole/expanded graphite 3D interlayer nanohybrids towards high capacitive performance |
title | Design and fabrication of polypyrrole/expanded graphite 3D interlayer nanohybrids towards high capacitive performance |
title_full | Design and fabrication of polypyrrole/expanded graphite 3D interlayer nanohybrids towards high capacitive performance |
title_fullStr | Design and fabrication of polypyrrole/expanded graphite 3D interlayer nanohybrids towards high capacitive performance |
title_full_unstemmed | Design and fabrication of polypyrrole/expanded graphite 3D interlayer nanohybrids towards high capacitive performance |
title_short | Design and fabrication of polypyrrole/expanded graphite 3D interlayer nanohybrids towards high capacitive performance |
title_sort | design and fabrication of polypyrrole/expanded graphite 3d interlayer nanohybrids towards high capacitive performance |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9067312/ https://www.ncbi.nlm.nih.gov/pubmed/35514504 http://dx.doi.org/10.1039/c9ra04205a |
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