A core/shell structured tubular graphene nanoflake-coated polypyrrole hybrid for all-solid-state flexible supercapacitors
A core/shell tubular structured graphene nanoflake-coated polypyrrole nanotube (GNF/PNT) hybrid is fabricated for all-solid-state flexible supercapacitors. Functionalization of a controlled coating amount of GNFs onto PNTs is achieved via chemical covalent bonds generated by acylation of the N–H pos...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/140814 |
| _version_ | 1826113548558794752 |
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| author | Qi, Kai Hou, Ruizuo Zaman, Shahid Xia, Bao Yu Duan, Hongwei |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Qi, Kai Hou, Ruizuo Zaman, Shahid Xia, Bao Yu Duan, Hongwei |
| author_sort | Qi, Kai |
| collection | NTU |
| description | A core/shell tubular structured graphene nanoflake-coated polypyrrole nanotube (GNF/PNT) hybrid is fabricated for all-solid-state flexible supercapacitors. Functionalization of a controlled coating amount of GNFs onto PNTs is achieved via chemical covalent bonds generated by acylation of the N–H positions of the PNT surface with the carboxyl groups of GNFs. The GNF coating not only acts as an efficient surface protector, but also serves as the electron transfer pathway; meanwhile, a controlled coating amount of GNFs optimizes the capacitance of the whole composite. A stable cycling performance and large capacitance as well as high capacitance retention of the GNF/PNT hybrid are therefore achieved. A flexible all-solid-state symmetric supercapacitor device is also assembled, which demonstrates (at 1.8 mA cm−2) an areal capacitance of 128 mF cm−2, an energy density of 11.4 μW h cm−2 at a power density of 720 μW cm−2, and a cycling stability of over 80% capacitance retention after 5000 cycles. This study demonstrates a facile strategy for designing novel conductive polymers/graphene composites with enhanced cycling stability in all-solid-state flexible supercapacitors and beyond. |
| first_indexed | 2024-10-01T03:25:02Z |
| format | Journal Article |
| id | ntu-10356/140814 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:25:02Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1408142020-06-02T05:33:17Z A core/shell structured tubular graphene nanoflake-coated polypyrrole hybrid for all-solid-state flexible supercapacitors Qi, Kai Hou, Ruizuo Zaman, Shahid Xia, Bao Yu Duan, Hongwei School of Chemical and Biomedical Engineering Engineering::Chemical engineering Polypyrrole All-solid-state Flexible Supercapacitors A core/shell tubular structured graphene nanoflake-coated polypyrrole nanotube (GNF/PNT) hybrid is fabricated for all-solid-state flexible supercapacitors. Functionalization of a controlled coating amount of GNFs onto PNTs is achieved via chemical covalent bonds generated by acylation of the N–H positions of the PNT surface with the carboxyl groups of GNFs. The GNF coating not only acts as an efficient surface protector, but also serves as the electron transfer pathway; meanwhile, a controlled coating amount of GNFs optimizes the capacitance of the whole composite. A stable cycling performance and large capacitance as well as high capacitance retention of the GNF/PNT hybrid are therefore achieved. A flexible all-solid-state symmetric supercapacitor device is also assembled, which demonstrates (at 1.8 mA cm−2) an areal capacitance of 128 mF cm−2, an energy density of 11.4 μW h cm−2 at a power density of 720 μW cm−2, and a cycling stability of over 80% capacitance retention after 5000 cycles. This study demonstrates a facile strategy for designing novel conductive polymers/graphene composites with enhanced cycling stability in all-solid-state flexible supercapacitors and beyond. MOE (Min. of Education, S’pore) 2020-06-02T05:33:17Z 2020-06-02T05:33:17Z 2018 Journal Article Qi, K., Hou, R., Zaman, S., Xia, B. Y., & Duan, H. (2018). A core/shell structured tubular graphene nanoflake-coated polypyrrole hybrid for all-solid-state flexible supercapacitors. Journal of Materials Chemistry A, 6(9), 3913-3918. doi:10.1039/c7ta11245a 2050-7488 https://hdl.handle.net/10356/140814 10.1039/c7ta11245a 2-s2.0-85042704840 9 6 3913 3918 en Journal of Materials Chemistry A © 2018 The Royal Society of Chemistry. All rights reserved. |
| spellingShingle | Engineering::Chemical engineering Polypyrrole All-solid-state Flexible Supercapacitors Qi, Kai Hou, Ruizuo Zaman, Shahid Xia, Bao Yu Duan, Hongwei A core/shell structured tubular graphene nanoflake-coated polypyrrole hybrid for all-solid-state flexible supercapacitors |
| title | A core/shell structured tubular graphene nanoflake-coated polypyrrole hybrid for all-solid-state flexible supercapacitors |
| title_full | A core/shell structured tubular graphene nanoflake-coated polypyrrole hybrid for all-solid-state flexible supercapacitors |
| title_fullStr | A core/shell structured tubular graphene nanoflake-coated polypyrrole hybrid for all-solid-state flexible supercapacitors |
| title_full_unstemmed | A core/shell structured tubular graphene nanoflake-coated polypyrrole hybrid for all-solid-state flexible supercapacitors |
| title_short | A core/shell structured tubular graphene nanoflake-coated polypyrrole hybrid for all-solid-state flexible supercapacitors |
| title_sort | core shell structured tubular graphene nanoflake coated polypyrrole hybrid for all solid state flexible supercapacitors |
| topic | Engineering::Chemical engineering Polypyrrole All-solid-state Flexible Supercapacitors |
| url | https://hdl.handle.net/10356/140814 |
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